hitachi shadow image for mainframe

HP StorageWorksHitachi ShadowImage™ for MainframeUser's GuideHP XP24000 Disk ArrayHP XP20000 Disk Array

AbstractThis guide explains how to use Hitachi ShadowImage™ for Mainframe to create nondisruptive, high-speed copies of informationstored by mainframe hosts on HP StorageWorks XP24000/XP20000 Disk Arrays. Topics include preparing for, performing,and troubleshooting ShadowImage for Mainframe operations using the Remote Web Console web client, PPRC host functions,and XP for Business Continuity Manager Software. The intended audience is a storage system administrator or authorizedservice provider with independent knowledge of HP StorageWorks XP storage systems, Remote Web Console, and mainframehost software.

HP Part Number: T5213-96032Published: May 2011Edition: Tenth

© Copyright 2007, 2011 Hewlett-Packard Development Company, L.P.

Confidential computer software. Valid license from HP required for possession, use or copying. Consistent with FAR 12.211 and 12.212, CommercialComputer Software, Computer Software Documentation, and Technical Data for Commercial Items are licensed to the U.S. Government undervendor's standard commercial license.

The information contained herein is subject to change without notice. The only warranties for HP products and services are set forth in the expresswarranty statements accompanying such products and services. Nothing herein should be construed as constituting an additional warranty. HP shallnot be liable for technical or editorial errors or omissions contained herein.

Acknowledgments

Microsoft, Windows, and Windows XP are U.S. registered trademarks of Microsoft Corporation.

Java and Oracle are registered trademarks of Oracle and/or its affiliates.

UNIX is a registered trademark of The Open Group.

Hitachi and Universal Replicator are registered trademarks of Hitachi, Ltd.

ShadowImage and TrueCopy are registered trademarks of Hitachi, Ltd. and Hitachi Data Systems Corporation.

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Revision History

DescriptionDateEdition

Applies to microcode version 60-01-31-00/00 or later.June 2007First

Applies to microcode version 60-01-68-00/00 or later.September 2007Second

Applies to microcode version 60-02-25-00/00 or later.January 2008Third

Applies to microcode version 60-02-48-00/00 or later.April 2008Fourth

Applies to microcode version 60-03-24-00/00 or later.September 2008Fifth

Applies to microcode version 60-04-04-00/00 or later.December 2008Sixth

Applies to microcode version 60-05-00-00/00 or later.June 2009Seventh

Applies to microcode version 60-06-05-00/xx or later.December 2009Eighth

Applies to microcode version 60-07-00-00/00 or later.June 2010Ninth

Applies to microcode version 60-08-01–00/00 or later.May 2011Tenth

Contents

1 Overview of Hitachi ShadowImage™ for Mainframe.......................................6ShadowImage for Mainframe.....................................................................................................6Business Benefits.......................................................................................................................7Feature Highlights.....................................................................................................................7

2 About ShadowImage for Mainframe Operations............................................8ShadowImage for Mainframe Components..................................................................................8

Volume Pairs and CTGs........................................................................................................9ShadowImage for Mainframe Software...................................................................................9License...............................................................................................................................9XP for Business Continuity Manager Software..........................................................................9PPRC Host Software..............................................................................................................9

ShadowImage for Mainframe Operations..................................................................................10Set Reserve Attribute Operation...........................................................................................10Add Pair Operation............................................................................................................10Split Pair Operation...........................................................................................................12Suspend Pair Operation......................................................................................................15Resynchronize Pair Operations.............................................................................................15Delete Pair Operation.........................................................................................................20

Pair Status.............................................................................................................................20ShadowImage for Mainframe Options.......................................................................................25

Swap&Freeze Option.........................................................................................................25Host I/O Performance Option..............................................................................................26Copy Threshold Option.......................................................................................................27

3 Interoperability with other Products and Functions.........................................28Virtual LVI..............................................................................................................................28Cache Residency Manager......................................................................................................29Volume Security......................................................................................................................29Volume Retention Manager......................................................................................................29XP Auto LUN..........................................................................................................................29HP StorageWorks XP External Storage Software..........................................................................30Hitachi TrueCopy™ for Mainframe............................................................................................30XP Continuous Access Journal Software™ for Mainframe.............................................................34TrueCopy for Mainframe and Universal Replicator for Mainframe..................................................38HP StorageWorks XP for Compatible Extended Remote Copy (XRC) Software.................................40Concurrent Copy....................................................................................................................40

4 Preparing for ShadowImage for Mainframe Operations.................................41System Requirements...............................................................................................................41

Volume Requirements..........................................................................................................41ShadowImage for Mainframe Software Requirements.............................................................42License Requirements..........................................................................................................42Requirements for Other Software..........................................................................................43

Assessing ShadowImage for Mainframe Requirements.................................................................43Calculating Maximum Number of Pairs.................................................................................43Performance Considerations................................................................................................48Identifying the Source and Target Volumes............................................................................50

Contents 3

Requirements for Maintaining ShadowImage for Mainframe.........................................................50Cautions on Maintaining the Devices....................................................................................50Cautions on Maintaining the Cache.....................................................................................50Cautions on Switching Off the Power Supply..........................................................................51

Installing ShadowImage for Mainframe.....................................................................................51Starting ShadowImage for Mainframe.......................................................................................51

5 Using the ShadowImage for Mainframe GUI................................................53Pair Operation Window..........................................................................................................53

Volume List........................................................................................................................54Preview List.......................................................................................................................57

History Window.....................................................................................................................58Option Window.....................................................................................................................59CTG Window........................................................................................................................60

6 Performing ShadowImage for Mainframe Operations Using Remote WebConsole.....................................................................................................63

Configuring the Volume List......................................................................................................63Changing or Deleting the Settings in Preview List........................................................................65

Changing the Settings in Preview List....................................................................................65Deleting the Settings in Preview List......................................................................................65

Setting or Resetting the Reserve Attribute....................................................................................65Setting the Reserve Attribute................................................................................................66Resetting the Reserve Attribute.............................................................................................67

Setting Options......................................................................................................................68Configuring CTGs...................................................................................................................68

Setting the Reserve Attribute of a CTG..................................................................................69Resetting the Reserve Attribute of a CTG...............................................................................70

Adding Pairs..........................................................................................................................70Splitting Pairs.........................................................................................................................73

Performing Only Pair Splitting..............................................................................................77Performing Pair Addition and Pair Splitting............................................................................77Performing At-Time Split Operation (Multiple Pair Splitting)......................................................78

Using PPRC Commands to Split, Resynchronize, and Delete Pairs in a CTG.....................................79Suspending Pairs....................................................................................................................80Resynchronizing Pairs..............................................................................................................81Deleting Pairs.........................................................................................................................84Viewing Detailed Volume and Pair Information...........................................................................86Viewing the Number of Pairs and License Information..................................................................87Viewing Pair Operations History...............................................................................................89

7 Performing ShadowImage for Mainframe Pair Operations Using XP for BusinessContinuity Manager Software.......................................................................91

Command Device for XP for Business Continuity Manager Software..............................................91XP for Business Continuity Manager Software CLI Commands that Correspond to the PPRCCommands............................................................................................................................91

8 Performing ShadowImage for Mainframe Pair Operations Using PPRC.............93PPRC Command Support.........................................................................................................93PPRC Command Requirements..................................................................................................94PSF and DEVSERV Commands.................................................................................................94

4 Contents

Adding Pairs Using PPRC Commands........................................................................................95CESTPAIR (Adding Pairs).....................................................................................................95ESTPAIR (Adding Pairs).......................................................................................................97

Splitting Pairs Using PPRC Commands.......................................................................................98CSUSPEND.......................................................................................................................98SUSPEND.........................................................................................................................99

Resynchronizing Pairs Using PPRC Commands..........................................................................100CESTPAIR (Resynchronizing Pairs).......................................................................................100ESTPAIR (Resynchronizing Pairs).........................................................................................101

Deleting Pairs Using PPRC Commands.....................................................................................103CDELPAIR.......................................................................................................................103DELPAIR..........................................................................................................................104

Displaying Pair Status Using PPRC Commands..........................................................................105CQUERY........................................................................................................................106QUERY...........................................................................................................................107

9 Troubleshooting......................................................................................109Troubleshooting....................................................................................................................109SIM Reporting......................................................................................................................110Calling HP Technical Support.................................................................................................111

10 Support and Other Resources.................................................................112Related Documentation..........................................................................................................112Conventions for Storage Capacity Values.................................................................................112HP Technical Support............................................................................................................112Subscription Service..............................................................................................................113HP Websites........................................................................................................................113Documentation Feedback.......................................................................................................113

Glossary..................................................................................................114

Index.......................................................................................................116

Contents 5

1 Overview of Hitachi ShadowImage™ for MainframeThis chapter provides an overview of the ShadowImage for Mainframe software for the HP XP diskarray:

• “ShadowImage for Mainframe” (page 6)

• “Business Benefits” (page 7)

• “Feature Highlights” (page 7)Unless otherwise specified, the terms XP disk array and storage system in this guide refer to thefollowing disk arrays:

• HP StorageWorks XP24000 Disk Array

• HP StorageWorks XP20000 Disk ArrayThe GUI illustrations in this guide were created using a Windows computer with the Internet Explorerbrowser. Actual windows may differ depending on the operating system and browser used. GUIcontents also vary with licensed program products, storage system models, and firmware versions.

ShadowImage for MainframeShadowImage for Mainframe software provides innovative, storage-based technology solutionsfor enabling continuous business operations. By partnering with customers to understand keybusiness challenges and requirements, ShadowImage for Mainframe is able to deliver robust,application-focused storage solutions that enhance operational efficiency and resilience.An essential component of business continuity and risk mitigation strategies and optimized IToperations is the ability to replicate data quickly for critical application processing, testing anddevelopment of new applications, zero-downtime recovery, data migration, and necessary backupoperations. The high-speed nondisruptive local mirroring technology of ShadowImage for Mainframesoftware rapidly creates multiple copies of mission-critical information within HP storage systemsin mainframe environments. (For equivalent functionality in open systems environments, see HPStorageWorks XP24000/XP20000 Business Copy Software User's Guide.) ShadowImage forMainframe keeps data RAID-protected and fully recoverable without affecting service or performancelevels. Replicated data volumes can be split from the host applications and used for system backups,application testing, and data mining applications while business continues to run at full capacity.ShadowImage for Mainframe provides heterogeneous replication between any storage systemswithin a virtualized storage pool managed by the XP disk array. Data that resides on an externallyattached storage system can be moved from the source to a target data volume anywhere in thestorage pool, including to another externally attached system. Using ShadowImage for Mainframe,you can migrate data volumes from one platform to another through the XP disk array and maximizethe use of your storage infrastructure. By providing nondisruptive, high-speed data replicationwithin any HP storage system or within the virtualized storage pool, ShadowImage for Mainframesoftware enables immediate use of data in decision support, software testing and development,and data protection operations.ShadowImage for Mainframe is functionally compatible with the industry-standard IBM Peer-to-PeerRemote Copy (PPRC) host software functions. PPRC TSO, PPRCOPY ICKDSF and/or HPStorageWorks XP for Business Continuity Manager Software commands may be used to performShadowImage for Mainframe operations on the HP disk array.This document describes and provides instructions for performing ShadowImage for Mainframeoperations on the XP disk array using the ShadowImage for Mainframe software on HPStorageWorks Remote Web Console and using PPRC TSO or PPRCOPY ICKDSF commands. Thelicensed ShadowImage for Mainframe software displays the ShadowImage for Mainframeinformation and allows you to perform ShadowImage for Mainframe operations. For further

6 Overview of Hitachi ShadowImage™ for Mainframe

information on Remote Web Console, see the HP StorageWorks XP24000/XP20000 Remote WebConsole User's Guide.If you use the HP StorageWorks DKA Encryption License Key, you can create a ShadowImage forMainframe pair by using an encrypted volume and a non-encrypted volume. For example, youcan create the pair specifying an encrypted volume as the S-VOL and a non-encrypted volume asthe T-VOL. In this case, data in the encrypted S-VOL will be copied as non-encrypted data in thenon-encrypted T-VOL.

Business BenefitsEnsure Business Continuity

• Shortens restart and recovery times with the consistency-group function, which providesmultivolume, point-in-time copies for applications and databases that share or span multiplevolumes

• Reduces recovery from data corruption time dramatically through the ShadowImage forMainframe QuickRestore feature, which allows an immediate restore to a disk-resident,point-in-time data copy

• Replicates large data volumes without having an impact on service levels, timing out, oraffecting performance levels

Improve Productivity and Processes

• Reduces testing and deployment time and increases the accuracy of application developmentby providing always-available copies of current production data

• Increases competitive advantage through the ShadowImage for Mainframe QuickSplit functionby facilitating the sharing of and immediate access to time-critical information for decisionsupport, populating data warehouses, performing analysis, or other data-mining operations

• Enables normal backup operations on a copy of up-to-date production data while criticalapplications continue to run unaffected

• Simplifies data migration between storage systems Reduce Operational and Capital Costs

• Allows business to remain online during data center activities, eliminating the need for 24/7resources to perform these tasks

• Maximizes the storage infrastructure by leveraging the virtualization capabilities of the XPdisk array

• Allows the use of cost-effective storage for enhanced data protection purposes

Feature HighlightsCTGs. For XP disk array storage systems, the ShadowImage for Mainframe softwareconsistency-group function allows a user-defined group of ShadowImage for Mainframe volumepairs to be split simultaneously, at a precise moment in time, with a single command. This copymethod creates a consistent point-in-time copy of an entire system, database, or any related setsof volumes—a technique that can replicate data between a primary system and secondary systemsanywhere in the world, with full data integrity.

Business Benefits 7

2 About ShadowImage for Mainframe OperationsThis chapter describes ShadowImage for Mainframe operations.

• “ShadowImage for Mainframe Components” (page 8)

• “ShadowImage for Mainframe Operations” (page 10)

• “Pair Status” (page 20)

• “ShadowImage for Mainframe Options” (page 25)

ShadowImage for Mainframe ComponentsThe system for using ShadowImage for Mainframe usually contains the following components.

• Pair of volumes (S-VOL and T-VOL)

• Licensed ShadowImage for Mainframe program productFigure 1 (page 8) shows a typical ShadowImage for Mainframe configuration using Remote WebConsole.

Figure 1 ShadowImage for Mainframe Components

You operate ShadowImage for Mainframe from the Remote Web Console computer, and copyvolumes in the storage system. A volume that has original data is called an S-VOL (source volume),and a volume to which the data is copied is called a T-VOL (target volume). A pair of the S-VOLand the T-VOL made by ShadowImage for Mainframe is called an SIz pair.

8 About ShadowImage for Mainframe Operations

You may operate SIz directly from the host and do not need to use the Remote Web Consolecomputer, if you use VOS3 DMFVSS, XP for Business Continuity Manager Software™, IBM PPRChost software functions, or IBM DFSMSdss host software functions.

Volume Pairs and CTGsShadowImage for Mainframe performs internal copy operations for logical volume pairs establishedby the user. Therefore, you need at least two volumes to use SIz, one for copy source (S-VOL), andanother for copy target (T-VOL). Each SIz pair consists of one S-VOL and up to three T-VOLs, whichare located in the same storage system.The SIz S-VOLs are the source volumes which contain the original data. The SIz T-VOLs are thetarget volumes which contain the backup data. Each T-VOL must be paired with only one S-VOL.During normal SIz operations, the S-VOLs remain available to all hosts at all times for read andwrite I/O operations (except during reverse copy and quick restore operations). When the pairstatus is Duplex and if the S-VOL is updated, the differential data between S-VOL and T-VOL willbe copied to the T-VOL regularly. However, since SIz T-VOLs are updated asynchronously, theS-VOL and T-VOL of the pair in Duplex status may not be identical. Remember that the T-VOLsbecome available for host access only after a split operation has been performed.

By using a IBM PPRC command or XP for Business Continuity Manager Software™, you can definemultiple SIz pairs as one CTG. If you define a CTG, you can split all SIz pairs in the group byusing the At-Time Split function. For details about the At-Time Split function, see “Split Pair Operation”(page 12).

ShadowImage for Mainframe SoftwareYou can operate ShadowImage for Mainframe by using the Remote Web Console computer. TheRemote Web Console computer can be attached to the XP storage systems via the TCP/IP local-areanetwork (LAN). The Remote Web Console computer communicates and exchanges data directlywith the service processor (SVP) of attached storage systems. You become able to acquire theinformation for the structure or status of the storage system, or issue commands to the storagesystem.

LicenseYou need to purchase the SIz license and make sure that there is enough licensed capacity accordingto the capacity of pairs you are going to create. ShadowImage for Mainframe regards S-VOLs,T-VOLs, and reserved volumes as the volumes that require the license capacity of SIz, and managethese volumes. When you purchase a license for volume capacity for use with ShadowImage forMainframe, you need to examine how much capacity of volumes you want to use as S-VOLs,T-VOLs or reserved volumes. The total capacity of volume that you can use cannot exceed themaximum volume capacity that is licensed to you. You must therefore purchase a license for volumecapacity that is equal to, or more than, the total volume capacity you want to use.

XP for Business Continuity Manager SoftwareIf you issue the XP for Business Continuity Manager Software™ commands to the storage systemfrom the mainframe hosts, you can create, split, resynchronize, or delete SIz pairs, or you candisplay the pair status. For details about the XP for Business Continuity Manager Software™commands, see “Performing ShadowImage for Mainframe Pair Operations Using XP for BusinessContinuity Manager Software” (page 91).

PPRC Host SoftwareShadowImage for Mainframe supports the IBM PPRC host software functions, including TSO PPRCcommands and ICKDSF PPRCOPY commands. SIz pairs can be added, split, resynchronized, anddeleted using these PPRC commands. “Performing ShadowImage for Mainframe Pair Operations

ShadowImage for Mainframe Components 9

Using PPRC” (page 93) describes and provides instructions for using PPRC commands to createand maintain SIz pairs on the XP storage system.

ShadowImage for Mainframe OperationsThis section describes the main operations for ShadowImage for Mainframe.

Set Reserve Attribute OperationThe ShadowImage for Mainframe set reserve attribute operation reserves a volume so that it canbe used as an SIz T-VOL. Reserved volumes can only be used as SIz T-VOLs. The XP storage systemrejects all write operations to reserved volumes (unless in Split or V-Split status). You can reserveup to 16,384 volumes in one XP storage system.When TSO or ICKDSF commands are used to establish SIz pairs, the T-VOLs do not need to bereserved. The CESTPAIR and PPRCOPY ESTPAIR commands require that potential T-VOLs be offlineto the host. For details, see “Performing ShadowImage for Mainframe Pair Operations Using PPRC”(page 93).

Add Pair OperationTo create (add) an SIz pair, the volume, which will be the S-VOL, must be in the simplex state. Youmay set reserve attribute on the T-VOL before adding it to an SIz pair. You can also create a pairwith an unreserved simplex volume. For detailed information about how to create SIz pairs, see“Adding Pairs” (page 70) and “Performing Pair Addition and Pair Splitting” (page 77).When you create a new volume pair, initial copy starts and all the data in the S-VOL is copied tothe T-VOL. Figure 2 (page 11) shows the change of the status of a pair from the start to end of theinitial copy operation.


Figure 2 Adding a Pair (Initial Copy)

Before the initial copy operation, the status of a pair is Simplex. The status of the pair is Pendingwhile the initial copy operation is in progress. The status changes to Duplex when the initial copyis complete.Write operations performed on the S-VOL during the initial copy operation will be duplicated atthe T-VOL by update copy operations after the initial copy is complete.Since an S-VOL remains available to all hosts for read and write I/Os during the initial copyoperation, the S-VOL might be updated during the operation. Therefore, when the status of thepair changes to Duplex after the initial copy operation is complete, the update copy operationsstart and the differential data of the S-VOL is copied to the T-VOL. As write I/Os are performedon a duplex S-VOL, the XP storage system stores the differential bitmap, and then performs updatecopy operations periodically based on the amount of differential data present on the S-VOL aswell as the elapsed time between update copy operations. Figure 3 (page 12) illustrates an updatecopy operation in a SIz pair with only one T-VOL.

ShadowImage for Mainframe Operations 11

Figure 3 Update Copy Operation

CAUTION: Even if the copy operation is completed without any host I/O, the data in the S-VOLand the data in the T-VOL may not be the same. Whether the S-VOL and the T-VOL have the samedata depends on the condition of the storage system. To make the S-VOL data and the T-VOL dataequal, split the pair and make the pair status split.

Update copy operations are not performed for SIz pairs with the following statuses: pending,SP-pend, V-Split, split, resync, resync-R, and suspend.Update copy operations do not occur every time a host issues a write I/O operation to the S-VOLof a ShadowImage for Mainframe pair. SIz update copy operations are performed asynchronouslyaccording to the differential bitmap, which is stored in shared memory.If shared memory is lost (for example, offline micro exchange or volatile power supply on) thedifferential bitmap is also lost. In this case, the XP24000/XP20000 disk array treats the entireS-VOL (T-VOL for resync-R pairs) as difference data and recopies all data to the T-VOL (S-VOL forresync-R pairs) to ensure proper pair resynchronization. For pairs in SP-pend or V-Split status, thestorage system changes the status to suspend due to the loss of the differential bitmap, ensuringproper resynchronization of these pairs. If shared memory has been lost, extra time is required forSIz operations since the XP24000/XP20000 disk array needs to copy the entire volume.

Split Pair OperationThe ShadowImage for Mainframe split capability provides point-in-time backup of your data, andalso facilitates real data testing by making the SIz copies (T-VOLs) available for host access. TheSIz split operation copies whole S-VOL data or differential data at that time to the T-VOL to makethe T-VOL identical to the state of the S-VOL when the split command was issued. If there are manyhost I/Os for the S-VOL, it may take time to synchronize the S-VOL and the T-VOL. When the splitoperation is complete, the pair status changes to split. Note that the split operations cannot beperformed on the pair whose status is suspend, resync or resync-R.While the pair is split, the XP storage system establishes a differential bitmap for the split S-VOLand T-VOL and records all updates to both volumes. The S-VOL remains fully accessible during thesplit operation. Whether you can access the T-VOL depends on what split type is specified. Thereare two kinds of split types, Quick Split and Steady Split. In addition to the split types, there isAt-Time Split which allows you to split all the pairs in the CTG. You can perform Quick Split and


Steady Split in the Split Volume Pair dialog box. You also need the XP for Business ContinuityManager Software™ to perform At-Time Split.

• Split pair operation by Quick Split:When the quick split operation starts, the pair status changes to V-split. You have full read/writeaccess to the split T-VOL (even though it is still reserved). The whole S-VOL data or differentialdata at that time will be copied to the T-VOL in the background.For information about Read/Write operations from host servers to S-VOLs and T-VOLs of SIzpairs during quick split operation, see “Operations from the Host Servers during the Split PairOperation” (page 75).

• Split pair operation by Steady Split:When the steady split operation starts, the pair status changes to SP-pending. The whole S-VOLdata or differential data at that time will be copied to the T-VOL. When the steady splitoperation is complete, you have full read/write access to the split T-VOL (even though it is stillreserved). To quickly finish the copy operation to access the T-VOL, make the S-VOL offlinebefore the operation.For information about Read/Write operations from host servers to S-VOLs and T-VOLs of SIzpairs during steady split operation, see “Operations from the Host Servers during the SplitPair Operation” (page 75).

• Split pair operation by At-Time SplitTo split pair by the At-Time Split function, you need the XP for Business Continuity ManagerSoftware™. To perform the split operation by using the At-Time Split function, you must specifya copy group or register the split time in the copy group. The split time indicates the time whenyou want to store the S-VOL data to the T-VOL. For example, if you register the CTG ofShadowImage for Mainframe as the copy group of the XP for Business Continuity ManagerSoftware™, the At-Time Split function enables you to copy data from the SIz S-VOLs in thesame CTG to T-VOLs simultaneously. The T-VOLs will contain the same data as the S-VOLswhen the Split operation is performed.Figure 4 (page 14) and Figure 5 (page 14) show the outline of the At-Time Split function.


Figure 4 Split Pair Operation by At-Time Split (Specifying Copy Group)

Figure 5 Split Pair Operation by At-Time Split (Specifying the Split Time)

• Splitting all the pairs in the same CTG.A PPRC command enables you to copy data from the SIz S-VOLs in the same CTG to T-VOLssimultaneously. The T-VOLs will contain the same data as the S-VOLs when the pairs are split.


The operation for splitting all the pairs in the same CTG is similar to the operation for splittingpairs when a copy group is specified by using XP for Business Continuity Manager Software™.However, the operation for splitting pairs in a CTG works in Quick Split, so you cannot specifySteady Split. You cannot specify the split time when using the PPRC command to split pairs.The split time indicates when you want to store the S-VOL data to the T-VOL.

• Triggers for the change of pair status to SplitThe performance in the V-Split or SP-Pend state is different depending on the value of systemoption mode 459 (ON or OFF, OFF by default) and whether the T-VOL or the volume in apool that is associated with the T-VOL is an external volume or an internal volume.

Table 1 Performance in the V-Split or SP-Pend state is different depending compared to optionmode 459 and the type of T-VOL.

PSUS(SP) or COPY(SP)S-VOLSystem option mode 459

The pair status changes to Split afterall the differential data are copied tothe cache in the storage system.

Internal volumeOFF

External volume

The pair status changes to Split afterall the differential data are copied tothe cache in the storage system andthe destage in the external storagesystem.

Internal volumeON

External volume

Suspend Pair OperationThe ShadowImage for Mainframe suspend pair operation suspends the update copy operationsto the T-VOL of the pair. When an SIz pair is suspended, the XP storage system stops performingupdate copy operations to the T-VOL, and the pair status changes to suspended. The storage systemcontinues accepting write I/O operations to the S-VOL, and marks the entire S-VOL track asdifference data. When a pairresync operation is performed on a suspended pair, the pair statuschanges to resync and the entire S-VOL is copied to the T-VOL. While the pairresync operation fora split pair can be very fast, the pairresync operation for a suspended pair will take as long asthe initial copy operation.The XP storage system will automatically suspend an SIz pair when it cannot keep the pair mirroredfor any reason. When the storage system suspends a pair, sense information is generated to notifythe host. The storage system will automatically suspend an SIz pair under the following conditions:

• When the storage system detects an error condition related to an update copy operation, and

• When the differential bitmap in shared memory is lost (for example, due to offline microcodeexchange). This applies to SP-pend and V-split pairs only. For duplex, split, resync, or resync-rpairs, the pair is not suspended but the entire S-VOL (T-VOL for reverse copy) is marked asdifference data.

Resynchronize Pair OperationsTo change the status of the pairs from Split to Duplex, or from Suspend to Duplex, you mustresynchronize the pairs. ShadowImage for Mainframe allows you to perform two different typesof pairresync operations: forward pairresync operation (Normal Copy and Quick Resync) andbackward pairresync operation (Reverse Copy and Quick Copy). Forward pairresync meanscopying S-VOL data to the T-VOL, and backward pairresync means copying T-VOL data to theS-VOL.

• Normal Copy (forward pairresync in normal speed)The normal resync operation first edits the differential bitmap of S-VOL and T-VOL, and then(see Figure 6 (page 17)) resynchronizes the T-VOL with the S-VOL based on the information


for the edited differential bitmap. The copy direction for a normal resync operation is S-VOLto T-VOL. Pair status changes to Duplex when the copying process of differential data iscompleted.The pair status during a normal resync operation is resync, and the S-VOL remains accessibleto all hosts for both read and write operations during a normal resync operation. The T-VOLbecomes inaccessible to all hosts during a normal resync operation.

• Quick Resync (forward pairresync in fast speed)The quick resync operation first edits the differential bitmap of S-VOL and T-VOL, and changethe pair status to Duplex when the editing process completes. The differential data based onthe information for the edited differential bitmap will be copied when update copy operationsare performed for duplex pairs (see Figure 6 (page 17)). The resync operation by QuickResync is faster than Normal Copy since Quick Resync changes pairs status to Duplex beforeactually copying differential data to the T-VOL.The pair status during a quick resync operation is resync, and the S-VOL remains accessibleto all hosts for both read and write operations. The T-VOL becomes inaccessible to all hostsduring a quick resync operation.

Figure 6 (page 17) illustrates how the data changes during the forward pairresync operations.


Figure 6 Forward Pairresync Operations

CAUTION: Even if the copy operation is completed without any host I/O, the data in the S-VOLand the data in the T-VOL may not be the same. Whether the S-VOL and the T-VOL have the samedata depends on the condition of the storage system. To make the S-VOL data and the T-VOL dataequal, split the pair and make the pair status split.

• Reverse Copy (backward pairresync in normal speed)The reverse copy operation (see Figure 7 (page 19)) synchronizes the S-VOL with the T-VOL.The copy direction for a reverse copy operation is T-VOL to S-VOL. The pair status during a


reverse copy operation is resync-r, and the S-VOL and T-VOL become inaccessible to all hostsfor write operations during a reverse copy operation. As soon as the reverse copy operationis complete, the S-VOL becomes accessible.

• Quick Restore (backward pairresync in fast speed)The quick restore operation (see Figure 7 (page 19)) speeds up the reverse copy operationby changing the volume map in the XP storage system to swap the contents of the S-VOL andT-VOL without copying the T-VOL data to the S-VOL. The S-VOL (used to be the T-VOL) andT-VOL (used to be the S-VOL) are resynchronized when update copy operations are performedfor pairs in the duplex status.The pair status during a quick restore operation is resync-r until the volume map change iscomplete. The S-VOL and T-VOL become inaccessible to all hosts for write operations duringthe quick restore operation.

◦ After the quick restore operation is executed, the Remote Web Console window maydisplay old configuration information on components such as logical volumes (LDEVs);the window may display configurations before the quick restore operation is performed.To refresh configuration information on the Remote Web Console window, wait until thequick restore operation completes, click File, and then Refresh on the menu bar of thewindow.

◦ If the differential data between S-VOL and T-VOL is small, the reverse copy operationmay be completed faster than the quick restore operation.

◦ If you create a pair by using an encrypted volume and a non-encrypted volume and thenexecute quick restore, the S-VOL encryption status and the T-VOL encryption status willbe reversed. For example, if you perform quick restore on an encrypted S-VOL and anon-encrypted T-VOL, S-VOL will be a non-encrypted volume, and T-VOL will be anencrypted volume.


Figure 7 (page 19) illustrates how the data changes during the backward pairresync operations.

Figure 7 Backward Pairresync Operations

The S-VOL remains fully accessible during a normal/quick resync operation, but becomesinaccessible to all hosts during a reverse copy or quick restore operation.When reverse copy or quick restore is in progress, you cannot perform, add, split, or resync pairfor any other pair that shares the same S-VOL (delete pair and suspend pair are allowed).Pairresync operation time depends on the pair status, split or suspend. The relation between thepair status and the time required for pairresync operations are as follow:• Pairresync for split pair

When a normal/quick resync operation is performed on a split pair, the XP storage systemcopies all differential data from the S-VOL to the T-VOL. When a reverse copy or quick restoreoperation is performed on a split pair, the storage system copies all differential data from the


T-VOL to the S-VOL. This ensures that the S-VOL and T-VOL are properly resynchronized in thedesired direction, and also greatly reduces the time needed to resynchronize the pair.

• Pairresync for suspend pairWhen a normal/quick resync operation is performed on a suspended pair, the XP storagesystem copies all data on the S-VOL to the T-VOL, since all S-VOL tracks were flagged asdifference data when the pair was suspended. Therefore, the normal resync operation forsuspended pairs is equivalent to and takes as long as the SIz initial copy operation. If youperform the quick resync operation on the suspended pairs, the update copy operation willbe performed and all the data will be copied to the T-VOL. In this case, the update copyoperation will be much more time than the initial copy operation.

• Resynchronizing all the pairs in the same CTGA PPRC command enables you to resynchronize all SIz pairs in the same CTG.Pairresync operation on all the pairs in the same CTG works in Normal Resync. Therefore,you cannot specify Quick Resync, Reverse Copy, or Quick Restore. To perform Quick Resync,Reverse Copy, or Quick Restore, you issue the PPRC command on one pair.

Delete Pair OperationThe ShadowImage for Mainframe delete pair operation stops the SIz update copy operations tothe T-VOL of the pair and changes the pair status of both volumes to Simplex. An SIz pair can bedeleted by the user at any time except during the quick split operation (for example, any statusexcept Simplex and V-split). After you delete an SIz pair, the T-VOL is still not available for writeoperations until the reserve attribute is reset.When a delete pair operation is performed on a pair in Split status, the reserve attribute of theT-VOL is automatically reset.The T-VOL of a duplex pair may not be identical to its S-VOL, due to the asynchronous SIz updatecopy operations. For information about how to synchronize the volumes before deleting the pair,see “Deleting Pairs” (page 84).

Pair StatusFigure 8 (page 21) illustrates the pair status transitions and the relationship between the pair statusand the SIz operations.


Figure 8 ShadowImage for Mainframe Pair Status Transitions

If a volume is not assigned to an SIz pair, its status is simplex.1. Select the simplex volumes for S-VOL and T-VOL to create an SIz pair. When you create an

SIz pair, the initial copy operation starts. During the initial copy operation, the status of theS-VOL and T-VOL changes to pending.

2. When the initial copy operation is complete, the pair status becomes duplex. When the initialcopy is completed, the differential data between the S-VOL and the T-VOL will be copied bythe update copy.

3. There are two kinds of pair status (split and suspend) when the pair is not synchronized.• When you split a pair (pairsplit), the pair status changes to split.

During the pairsplit process, the pair status becomes SP-pending. Note that if you specifyQuick Split pairsplit, the pair status becomes V-Split during the process. When the split

Pair Status 21

is complete, the pair status changes to split, and you can access the split T-VOL. Theupdate copy operation is not performed on the pairs which status is split.

• If the HP disk array cannot maintain duplex status for any reason, or if you suspend thepair, the pair status changes to suspend.

4. When you start a pairresync operation, the pair status changes to resync or resync-r. Whenthe pairresync operation is complete, the pair status changes to Duplex.

When you specify reverse or quick restore mode for a pairresync operation, the pair status changesto resync-r (data is copied in the reverse direction from the T-VOL to the S-VOL). For details on thesettings of the pairresync operation, see “Resynchronize Pair Operations” (page 15).When you delete a pair, the status of the volumes that were used by that pair changes to Simplex.You cannot delete the pair which status is V-Split.Table 2 (page 22) lists and describes the SIz pair status conditions.

Table 2 ShadowImage for Mainframe Pair Status

T-VOL AccessS-VOL AccessHost StatusDescriptionStatus

N/A (there is noT-VOL yet).If the volume isreserved as a T-VOL,the storage systemdoes not accept readand write I/Os.

N/A (there is noS-VOL yet).

S-VOL = SIMPLEXT-VOL = SIMPLEX

The volume is notassigned to an SIzpair. The XP storagesystem accepts readand write I/Os for allsimplex volumes thatare not reserved.

Simplex

Read/write-disabledRead/write-enabledS-VOL = PPRI-PNDGT-VOL = PSEC-PNDG

The pair createoperation has beenaccepted normally.The initial copyoperation isexecuted.1 No updatecopy operations areperformed.

Pending

Read/write-disabledRead/write-enabledS-VOL = PPRIMARYT-VOL = PSECONDRY

The initial copyoperation is complete,and the XP storagesystem startsperformingasynchronous updatecopy operations fromthe S-VOL to the T-VOLas needed. The S-VOLand T-VOL of a duplexpair may not beidentical.

Duplex


Table 2 ShadowImage for Mainframe Pair Status (continued)



The pair splitoperation in SteadySplit mode has beenaccepted normally.The split operationstarts a copyoperation.1 All S-VOLupdates prior to thesplit command arebeing copied to theT-VOL. When theseupdates are complete,the split T-VOL isidentical to the state ofthe S-VOL when thesplit started.

SP-Pend

Read/write-enabled,can be varied online.

Read/write-enabledS-VOL = PPRI-SUSPT-VOL = SIMPLEX

The pair splitoperation in QuickSplit mode has beenaccepted normally.The split operationstarts a copyoperation.1 Only theS-VOL differential datais being copied to theT-VOL in background.The V-Split pairscannot be deleted.

V-Split

Read/write-enabled,can be varied online.

Read/write-enabledS-VOL = PPRI-SUSPT-VOL = SIMPLEX

The XP storage systemstops performingupdate copyoperations for splitpairs, and startsaccepting write I/Osfor split T-VOLs. Thestorage system keepstrack of all updates tothe split S-VOL andT-VOL, so the pair canbe resynchronizedaccurately andquickly.

Split


The pairresyncoperation has beenaccepted normally.The pairresyncoperation isexecuted.1 When asuspended pair isresynchronized, theentire S-VOL is copiedto the T-VOL. Noupdate copyoperations areperformed duringresync operation.

Resync

Pair Status 23

Table 2 ShadowImage for Mainframe Pair Status (continued)


Read/write-disabledRead/write-disabledS-VOL = PPRI-PNDGT-VOL = PSEC-PNDG

The reverse resyncoperation on the pairhas been acceptednormally. The reverseresyn operation isexecuted.1 When asplit pair is reverseresynchronized, the XPstorage system copiesonly the T-VOLdifferential data to theS-VOL. The reversecopy cannot beperformed onsuspended pairs. Noupdate copyoperations areperformed duringreverse copy or quickrestore.

Resync-R

Read/write-disabledRead/write-enabledS-VOL = PPRI-SUSPT-VOL = PSEC-SUSP

The XP storage systemdoes not performupdate copyoperations to asuspended T-VOL. Thestorage system marksthe entire S-VOL trackmap as differentialdata, so the entireS-VOL is copied to theT-VOL when the pairis resumed. Use resynccommand to resume asuspended pair.Reverse copy andquick restore cannotbe used to resumesuspended pairs.

Suspend

1 It might take time before the copying process starts, depending on the number of pairs and system environment.

CAUTION: When you execute DEVSERVE to a read/write disabled volume in Table 2 (page22), “INTERVENTION REQUIRED” will be returned. However, when you create pairs with thevolumes online, and when you execute DESERVE to a read/write disabled volume, a normal valuewill be returned instead of “INTERVENTION REQUIRED”. Table 3 (page 24) shows the allowableoperations for each pair status.

Table 3 Pair Status and Allowable Operations

Pair StatusOperation

SuspendResync-RResyncSplitV-SplitSP-PendDuplexPendingSimplex

NGNGNGNGNGNGNGNGYesAdd Pair

NGNGNGNGNGNGYesYesYesSplit Pair

NGYesYesYesYesYesYesYesNGSuspendPair


Table 3 Pair Status and Allowable Operations (continued)

Pair StatusOperation

SuspendResync-RResyncSplitV-SplitSP-PendDuplexPendingSimplex

YesNGNG1YesYesNGNG1NGNGResyncPair(forward)

NGNGNGYesNGNGNGNGNGResyncPair(backward)

YesYesYesYesNGYesYesYesNGDeletePair

1 There are the following cases:

• If you try to resynchronize a pair in duplex or resync status by copying data from the S-VOL to the T-VOL using PPRCTSO command, the processing ends normally. However, since actually no resynchronize processing is performed,the pair status does not change.

• If you use ICKDSF PPRCOPY command, the command abnormally ends by reporting CC = 12.

• If you use XP for Business Continuity Manager Software™, the processing ends normally. However, since noresynchronize processing is performed as in case 1, the pair status does not change. For further information about

how to use XP for Business Continuity Manager Software™, see the HP StorageWorks XP for XP for Business

Continuity Manager Software™ Software User's Guide.

ShadowImage for Mainframe OptionsYou can use the options in Table 4 (page 25) for SIz operations.

Table 4 Types of ShadowImage for Mainframe Options

RequirementFeaturesOption Type

You must change the storage system setting toallow the quick restore operation.

Swap&Freeze option suppresses the updatecopy. For details, see “Swap&Freeze Option”(page 25).

Swap&Freeze

N/AHost I/O Performance option suppresses thecopy operations by ShadowImage forMainframe. For details, see “Host I/OPerformance Option” (page 26).

Host I/O Performance

N/ACopy Threshold option temporarily stops thecopy operation of ShadowImage forMainframe. For details, see “Copy ThresholdOption” (page 27).

Copy Threshold

NOTE: Available option types depend on the storage system settings.

Swap&Freeze OptionThe Swap&Freeze option allows the S-VOLs of an SIz pair to remain unchanged after the quickrestore operation. If the quick restore operation is performed on an SIz pair with the Swap&Freezeoption, update copy operations are suppressed, and thus are not performed for pairs in the duplexstatus after the quick restore operation. If the quick restore operation is performed without theSwap&Freeze option, the S-VOL and T-VOL are resynchronized when update copy operations areperformed for pairs in the Duplex status.Make sure that the Swap&Freeze option remains in effect until the pair status becomes Duplex afterthe quick restore operation.

ShadowImage for Mainframe Options 25

Figure 9 (page 26) shows the state of the T-VOL after the quick restore operation with or withoutthe Swap&Freeze option.

Figure 9 Quick Restore Operation With or Without Swap&Freeze Option

The Quick Restore pairresync operation on a pair which status is split exchanges the data in theS-VOL and the T-VOL of the pair. If you use Swap&Freeze option when performing the QuickRestore pairresync operation, the update copy operation will not take place after the Quick Restorepairresync operation is complete. Therefore, the data of the S-VOL and the T-VOL is kept exchanged.If you do not use Swap&Freeze option when performing the Quick Restore pairresync operation,the update copy operation will take place after the Quick Restore pairresync operation is complete,and the data in the S-VOL overwrites the T-VOL.

Host I/O Performance OptionThe Host I/O Performance option is used to improve host I/O responses over SIz copying processingtime. When the Host I/O Performance option is in effect, the storage system suppresses executionof SIz copying processing, and consequently host I/O responses improve.When SIz copying processing is suppressed by the Host I/O Performance option, the time takenfor copying increases. Also, if ShadowImage for Mainframe pairs exist, host I/O responses mightnot be improved. In this case, set the Host I/O Performance option for ShadowImage for Mainframeas well.


Copy Threshold OptionIf the load of XP storage system increases, host server I/O performance (response) may be degraded.If ShadowImage for Mainframe performs copy operations when the load of the storage system isheavy, it is more likely that host server I/O performance (response) may be degraded. The CopyThreshold option temporarily stops SIz copy operations when the load of the storage system isheavy. If you set this option in effect, you can minimize the degradation of host I/O performanceby temporarily stopping SIz copy operations when the load of the storage system is heavy.ShadowImage for Mainframe has another option called the Host I/O Performance option, whichmaintains host I/O performance (response). Host I/O Performance option suppresses SIz copyoperation regardless of the status of the storage system. On the other hand, the Copy Thresholdoption is effective only when the load of the storage system is heavy. When the Copy Thresholdoption is in effect, all the SIz copy operations stop.For information about the setting of the Host I/O Performance option, see “Host I/O PerformanceOption” (page 26). For information about the setting of the Copy Threshold option call the HPtechnical support.Copy operations that are stopped by the Copy Threshold option will resume when the storagesystem load becomes light. If this option is in effect, the SIz copy operation and the copy operationsof the following program products will stop when the storage system load is heavy:

• HP StorageWorks XP Business Copy Software

• HP StorageWorks XP for FlashCopy Mirroring Software

• HP StorageWorks XP for FlashCopy Mirroring V2 Software

• HP StorageWorks XP Snapshot Software

• HP StorageWorks XP Auto LUN Software

ShadowImage for Mainframe Options 27

3 Interoperability with other Products and FunctionsShadowImage for Mainframe supports concurrent operations with the following data managementfunctions.

• “Virtual LVI” (page 28)

• “Cache Residency Manager” (page 29)

• “Volume Security” (page 29)

• “Volume Retention Manager” (page 29)

• “XP Auto LUN” (page 29)

• “HP StorageWorks XP External Storage Software” (page 30)

• “Hitachi TrueCopy™ for Mainframe” (page 30)

• “XP Continuous Access Journal Software™ for Mainframe” (page 34)

Virtual LVIVirtual LVI volumes can be assigned to SIz pairs, provided that the T-VOL has the same capacityas the S-VOL. If you need to perform Virtual LVI operations on an existing SIz S-VOL or T-VOL, youmust delete the pair first to return the volume to Simplex status.

28 Interoperability with other Products and Functions

Cache Residency ManagerCache Residency Manager for Mainframe volumes can be assigned to SIz pairs, and CacheResidency Manager for Mainframe operations can be performed on existing SIz S-VOLs andT-VOLs.

CAUTION: See “Suspend Pair Operation” (page 15) for important information on performingquick restore operations on Cache Residency Manager for Mainframe volumes.

CAUTION: See “Performance Considerations” (page 48) for the change of pair status to Split.The performance in the V-Split or SP-Pend state is different depending on the value of the systemoption mode 459 (ON or OFF, OFF by default) and whether the T-VOL or the volume in a poolthat is associated with the T-VOL is an external volume or an internal volume.

Table 5 The performance in the state of V-Split or SP-Pend is different depending on the value ofthe system option mode 459 and the type of T-VOL.

PSUS(SP) or COPY(SP)S-VOL*System option mode 459

The pair status changes to Split after allthe differential data are copied to thecache in the storage system.

Internal volumeOFF

External volume

The pair status changes to Split after allthe differential data are copied to thecache in the storage system andcompleted the destage in the externalstorage system.

Internal volumeON

External volume

Volume SecurityVolume Security operations do not directly affect SIz operations. Secure LDEVs can be assignedto SIz pairs, and SIz volumes can be secured. A secure LDEV will accept SIz initial and updatecopy operations. However, you cannot specify volumes that are selected as invalid T-VOLs for SIzT-VOLs. When an S-VOL is secured by Volume Security, this setting does not apply to thecorresponding T-VOLs.SIz T-VOLs cannot be accessed by any host except when the pair is split.

Volume Retention ManagerNormal volumes have the read/write attribute so that you can access and update the data withoutany restrictions. By using Volume Retention Manager, you may set the read only attribute, whichprohibit writing operation, or the protect attribute which prohibit both reading and writingoperations. Remember that you cannot create SIz pairs with the volumes with protect attribute.

XP Auto LUNSIz volumes can be assigned to migration volumes of XP Auto LUN. However, if the SIz S-VOL isalready paired with three T-VOLs, you must delete the SIz pairs before migrating the volumes byXP Auto LUN. Also, to assign SIz volumes to destination volumes of migration by XP Auto LUN, orreserve SIz volumes for XP Auto LUN, you must delete the SIz volumes or un-reserve SIz volumesbefore using the volumes by XP Auto LUN. If you assign an SIz S-VOL that is already paired withthree T-VOLs to migration volumes of XP Auto LUN, or assign SIz volumes to other XP Auto LUNvolumes than migration volumes, the command will be rejected.Also, if you split the SIz pair that is assigned to XP Auto LUN's migration volumes, migration ofthose volumes will be canceled.

Cache Residency Manager 29

You cannot use migration volumes, destination volumes, and reserved volumes for XP Auto LUNfor SIz pair operations (the command will be rejected). To use XP Auto LUN volumes for SIz pairoperations, you must release the volumes by XP Auto LUN.

HP StorageWorks XP External Storage SoftwareSIz operations can also be performed in conjunction with XP External Storage operations to createpairs with external volumes. For the details on the external volumes, see the HP StorageWorksXP24000/XP20000 External Storage Software User's Guide.

Hitachi TrueCopy™ for MainframeTCz volumes can be assigned to SIz pairs, and vise versa.

CAUTION: When performing the QuickRestore pairresync operation on the SIz pair which sharesthe volume with TrueCopy Asynchronous for Mainframe, SIz S-VOL and T-VOL must be allocatedto the same CLPR. Specify the Reverse Copy mode instead of the Quick Restore mode whenresynchronizing the SIz pair whose S-VOL and T-VOL are allocated to the different CLPR.

HP recommends ShadowImage for Mainframe for intra-storage system copy operations. IfShadowImage for Mainframe is not installed, TCz (synchronous only) can be used to copy withinthe same XP storage system. This TCz configuration requires at least one external Fibre Channelinterface cable loop (a minimum of two is recommended).ShadowImage for Mainframe and XP Continuous Access for Mainframe can function together inthe same XP storage system to provide both internal and remote backup for your important data.

• When SIz and TCz pairs share the same volume, to obtain the SIz pair status, query from thehost:◦ The T-VOL status of the SIz pair if the SIz S-VOL and TCz M-VOL share the same volume,

◦ The T-VOL status of the SIz pair if the SIz S-VOL and TCz R-VOL share the same volume,and

◦ The S-VOL status of the SIz pair if the SIz T-VOL and TCz M-VOL share the same volume.

• ShadowImage for Mainframe supports multiple T-VOLs for each S-VOL. If you issue a pairstatus query to an SIz S-VOL, the status for only one SIz pair is reported (the pair with theT-VOL with the lowest LDEV ID). To obtain the pair status for the SIz pairs with the other T-VOLs,you must direct the host query to the specific T-VOL using the T-VOL’s LDEV ID in the hostcommand. The SIz remote console software displays the LDEV ID and SIz pair status of allT-VOLs associated with an S-VOL.

• Reverse copy and quick restore operations can be performed on shared SIz/TCz pairs onlywhen the TCz pair is suspended.

Table 6 (page 30) describes the host pair status reporting for SIz volumes, TCz volumes, andSIz/TCz shared volumes.

Table 6 Host Pair Status Reporting for SIz/TCz Shared Volumes

Pair Status Reported by Storage SystemNumber of TCz PairsNumber of SIz S-VOLs

Simplex00

SIz pair status01

SIz pair status for the pair whose T-VOL has the lowestLDEV ID

02 or more

TCz pair status10


Table 6 Host Pair Status Reporting for SIz/TCz Shared Volumes (continued)

Pair Status Reported by Storage SystemNumber of TCz PairsNumber of SIz S-VOLs

TCz pair status11

TCz pair status12 or more

Table 7 (page 31) lists the currency of the data on shared SIz/TCz volumes based on the SIz andTCz pair status.

Table 7 Currency of a Shared SIz and TCz Volume

TCz Pair StatusSIz Pair Status

SuspendedDuplexPending

Not currentNot currentNot currentPending

CURRENTNot currentNot currentDuplex

CURRENTNot currentNot currentSP-Pending

CURRENTNot currentNot currentV-Split

CURRENTCURRENTCURRENTSplit

CURRENTNot currentNot currentResync

CURRENTN/AN/AResync-r

Not currentNot currentNot currentSuspended

Figure 10 (page 31) shows a volume that is functioning as both an SIz S-VOL and a TCz M-VOL.This configuration allows you to:

• Use ShadowImage for Mainframe to provide on-site backup copies of TCz M-VOLs, and/or

• Use TCz to provide remote backup copies of SIz S-VOLs.

Figure 10 SIz and TCz: Shared S-VOL / M-VOL

Figure 11 (page 32) shows a volume that is functioning as both an SIz S-VOL and a TCz R-VOL.This configuration allows you to use SIz to provide additional remote copies of TCz R-VOLs.

Hitachi TrueCopy™ for Mainframe 31

Figure 11 SIz and TCz: Shared S-VOL / R-VOL

CAUTION: When you share a SIz S-VOL with a TCz R-VOL as shown in Figure 11 (page 32),the write operation to the TCz M-VOL takes time. When the SIz pair is in the V-Split status, thewrite operation to the TCz M-VOL may take longer depending on the time needed for the SIz paircopying process.

When you split SIz pairs, if a volume is shared with TCzA and SIz, consider the following points:

• Split the SIz pair after you have changed the status of TCzA pair to Suspend.

• If you split SIz pairs for each CTG, split the pairs after you have changed the status of allTCzA pairs in the specified CTG to Suspend, and also make the consistency time (C/T) of theCTG equal to the C/T of each TCzA pair.

You can also prevent the SIz split operation if it does not meet these points. For details, call HPtechnical support. See “Calling HP Technical Support” (page 111).In addition, note that in the case of TCzA, the TCz pair may be suspended by failure because ofthe shortage of the capacity of its side file.Figure 12 (page 33) is an example of a volume, which is functioning as both a TCz M-VOL andan SIz S-VOL, while the R-VOL of the same TCz pair is also functioning as the S-VOL of anotherSIz pair. This configuration allows you to:

• Use ShadowImage for Mainframe to provide on-site backup copies of TCz M-VOLs and R-VOLs,and/or

• Use TCz to provide remote backup of SIz S-VOLs.


Figure 12 SIz and TCz: Shared S-VOL / M-VOL and S-VOL / R-VOL

Figure 13 (page 33) shows a volume functioning as both an SIz T-VOL and a TCz M-VOL.

Figure 13 SIz and TCz: Shared T-VOL/M-VOL

The configuration in Figure 13 (page 33) does not allow SIz and TCz to copy at the same time.Add the SIz pair first, and then split the pair before creating the TCz pair. You must suspend theTCz pair in order to resynchronize the SIz pair. The TCz pair status cannot be changed when theSIz pair is in the V-Split status.You cannot distinguish the Split status from the V-Split status with the PPRC command. When youuse the SIz and TCz shared configuration shown in Figure 13 (page 33), you must either use thePPRC command to perform the Steady Split operation, or use the Remote Web Console computerto confirm the pair statuses. You can perform the Steady Split operation by specifying the CSUSPENDparameters (Byte 7 = ‘M’, Byte 8 = ‘P’, Byte 9 = ‘S’). For details about the PPRC commands, see“Performing ShadowImage for Mainframe Pair Operations Using PPRC” (page 93).If a volume is shared with a SIz pair and a TCz pair, you can perform QuickRestore on the SIzpair when the TCz pair is suspended. You cannot perform QuickRestore on the SIz pair when theTCz pair is not suspended. Table 8 (page 34) shows whether you can perform QuickRestore whena volume is shared with an SIz pair and a TCz pair.

Hitachi TrueCopy™ for Mainframe 33

Table 8 Quick Restore Operation When Volume Is Shared with SIz Pair and TrueCopy for MainframePair

Quick Restore Operation on SIz PairShared Volume

TrueCopy for MainframeShadowImage for Mainframe

YesP-VOLP-VOL

YesS-VOL

YesP-VOLS-VOL

XP Continuous Access Journal Software™ for MainframeURz volumes can be assigned to SIz pairs, and vice versa.A primary volume (P-VOL) of Universal Replicator for Mainframe means a primary data volume ofUniversal Replicator for Mainframe. A secondary volume (S-VOL) of Universal Replicator forMainframe means a secondary data volume of Universal Replicator for Mainframe.ShadowImage for Mainframe and Universal Replicator for Mainframe can function together in thesame storage system to provide both internal and remote backup for your important data. To querythe status of a SIz pair when SIz and URz pairs share the same volume, do the following:

• Query the SIz S-VOL and T-VOL status from the host if the SIz S-VOL and URz P-VOL share thesame volume,

• Query the SIz T-VOL status from the host if the SIz S-VOL and URz S-VOL share the samevolume.

• Query the SIz S-VOL status from the host if the SIz T-VOL and URz P-VOL share the samevolume.

ShadowImage for Mainframe supports multiple T-VOLs for each S-VOL. If you issue a pair statusquery to an SIz S-VOL, the status for only one SIz pair is reported (the pair with the T-VOL andwith the lowest LDEV ID). To obtain the pair status for the SIz pairs with the other T-VOLs, you mustdirect the host query to the specific T-VOL using the T-VOL’s LDEV ID in the host command. The SIzremote console software displays the LDEV ID and SIz pair status of all T-VOLs associated with anS-VOL.When you perform PPRC command to the SIz/URz shared volumes to query the pair status, thestorage system reports pair status of the SIz. To query pair status of the URz from the host, use XPfor Business Continuity Manager Software™. For details regarding how to use XP for BusinessContinuity Manager Software™, see the HP StorageWorks XP for Business Continuity ManagerSoftware User's Guide.Table 9 (page 34) lists the currency of the data on shared SIz/URz volumes based on the SIz andURz pair status.

Table 9 Currency of a Shared SIz and URz Volume

URz Pair StatusSIz Pair Status

SuspendedDuplexPending duplex

Not currentNot currentNot currentPending

CURRENTNot currentNot currentDuplex

CURRENTNot currentNot currentSP-Pending

CURRENTNot currentNot currentV-Split

CURRENTCURRENTCURRENTSplit


Table 9 Currency of a Shared SIz and URz Volume (continued)

URz Pair StatusSIz Pair Status

SuspendedDuplexPending duplex

CURRENTNot currentNot currentResync

CURRENTN/AN/AResync-r

Not currentNot currentNot currentSuspended

Figure 14 (page 35) shows a volume which is functioning as both an SIz S-VOL and a URz P-VOL.This configuration allows you to:

• Use ShadowImage for Mainframe to provide on-site backup copies of URz P-VOLs, and/or

• Use URz to provide remote backup copies of SIz S-VOLs.

Figure 14 SIz and URz: Shared S-VOL/P-VOL

Figure 15 (page 36) shows a volume functioning as both an SIz S-VOL and a URz S-VOL. Thisconfiguration allows you to use SIz to provide additional remote copies of URz S-VOLs.

XP Continuous Access Journal Software™ for Mainframe 35

Figure 15 SIz and URz: Shared S-VOL/S-VOL

CAUTION: When you share an SIz S-VOL with a URz S-VOL as shown in Figure 15 (page 36),the write operation to the URz P-VOL takes time. When the SIz pair is in the V-Split status, the writeoperation to the URz P-VOL may take longer depending on the time needed for the copying processof the SIz pair.

In addition, note that if the journal volume size is small, the URz pair may be suspended by failurebecause of the shortage of the capacity of its journal volume.Figure 16 (page 37) shows a volume that is functioning as both a URz P-VOL and an SIz S-VOL,while the S-VOL of the same URz pair is also functioning as the S-VOL of another SIz pair. Thisconfiguration allows you to:

• Use ShadowImage for Mainframe to provide on-site backup copies of URz P-VOLs and S-VOLs,and/or

• Use URz to provide remote backup of SIz S-VOLs.


Figure 16 SIz and URz: Shared S-VOL/P-VOL and S-VOL/S-VOL

Figure 17 (page 37) shows a volume that is functioning as both an SIz T-VOL and a URz P-VOL.This configuration allows you to use URz to provide remote copies of SIz T-VOLs.

Figure 17 SIz and URz: Shared T-VOL/P-VOL

In the configuration shown in Figure 17 (page 37), you cannot perform the SIz and URz copyoperations at the same time. In Figure 17 (page 37), first you need to create and split the SIz pair,then create the URz pair. To resynchronize the SIz pair, suspend the URz pair beforehand.You cannot change the URz pair status while the SIz pair is in V-Split status.If a volume is shared with a SIz pair and a URz pair, you can perform QuickRestore on the SIzpair when the URz pair is suspended. You cannot perform Quick Restore on the SIz pair when theURz pair is not suspended.Table 10 (page 38) shows whether you can perform QuickRestore whena volume is shared with an SIz pair and a URz pair.

XP Continuous Access Journal Software™ for Mainframe 37

Table 10 Quick Restore Operation When Volume Is Shared with SIz Pair and URz Pair

Quick Restore Operation on SIz PairShared Volume

Universal Replicator for MainframeShadowImage for Mainframe

YesP-VOLP-VOL

YesS-VOL

YesP-VOLS-VOL

TrueCopy for Mainframe and Universal Replicator for MainframeFigure 18 (page 38) and Figure 19 (page 39) show examples of using SIz, TCz, and URz at thesame time.A primary volume (P-VOL) of Universal Replicator for Mainframe means a primary data volume ofUniversal Replicator for Mainframe. A secondary volume (S-VOL) of Universal Replicator forMainframe means a secondary data volume of Universal Replicator for Mainframe.The configuration shown in Figure 18 (page 38) shows a volume functioning as both a URz S-VOLand a TCz M-VOL.

Figure 18 SIz, URz, and TCz: Shared S-VOL / S-VOL / M-VOL

The configuration shown in Figure 19 (page 39) shows a volume functioning as both a TCz R-VOLand a URz P-VOL.


Figure 19 SIz, TCz, and URz: Shared S-VOL / R-VOL / P-VOL

Table 11 (page 39) describes the availability of ShadowImage for Mainframe operation in theTrueCopy for Mainframe secondary site

Table 11 Availability of ShadowImage for Mainframe Operation in the TrueCopy for MainframeSecondary Site

ShadowImage for Mainframe OperationStatus ofURz Pairfor DeltaResyncOperation

TCz PairStatus

Resync PairDeletePair

SuspendPair

Split PairAdd Pair

QuickRestore

ReverseCopy

QuickResync

NormalCopy

NONOYESYESYESYESYESYESHoldDuplex

NONOYESYESYESYESYESYESPendingDuplex

NOYESYESYESYESYESYESYESSuspended

NOYESYESYESYESYESYESYESSwapping

NONOYESYESYESYESYESYESHldeDuplex




Table 12 (page 40) describes the availability of ShadowImage for Mainframe operation in theUniversal Replicator for Mainframe secondary site.

TrueCopy for Mainframe and Universal Replicator for Mainframe 39

Table 12 Availability of ShadowImage for Mainframe Operation in the Universal Replicator forMainframe Secondary Site

ShadowImage for Mainframe OperationStatus ofURz Pairfor DeltaResyncOperation

URz PairStatus

Resync PairDeletePair

SuspendPair

Split PairAdd Pair

QuickRestore

ReverseCopy

QuickResync

NormalCopy

NONOYESYESYESYESYESYESHoldDuplex




HP StorageWorks XP for Compatible Extended Remote Copy (XRC)Software

If SIz S-VOLs and Compatible XRC source volume (original data) share the same volumes, youcannot perform the Reverse Copy or QuickRestore operation for those volumes. Do not useCompatible XRC T-VOLs (copied data) for SIz volumes.

Concurrent CopyIf SIz S-VOLs and Concurrent Copy source volume (original data) share the same volumes, youcannot perform the Reverse Copy or QuickRestore operation for those volumes. Do not useConcurrent Copy T-VOLs (copied data) for SIz volumes.


4 Preparing for ShadowImage for Mainframe OperationsThis chapter describes requirements for using and maintaining ShadowImage for Mainframe,including how to calculate the number of pairs that ShadowImage for Mainframe can create andhow to install and start ShadowImage for Mainframe. Read this chapter before you start usingShadowImage for Mainframe.

• “System Requirements” (page 41)

• “Assessing ShadowImage for Mainframe Requirements” (page 43)

• “Requirements for Maintaining ShadowImage for Mainframe” (page 50)

• “Installing ShadowImage for Mainframe” (page 51)

• “Starting ShadowImage for Mainframe” (page 51)

System RequirementsSIz operations involve the XP storage system containing the S-VOLs and T-VOLs, the licensedShadowImage for Mainframe feature enabled on the Remote Web Console computer. The SIzsystem requirements are as follows.

Volume RequirementsThe requirements for the volumes to be used as SIz pairs are as follows:

• RAID levelThe RAID level combinations of the S-VOL and the T-VOL of an SIz pair must be one of thefollowing.

Table 13 Supported Combinations of RAID Levels

T-VOLS-VOL

RAID1RAID1

RAID5RAID1

RAID6RAID1

RAID1RAID5

RAID5RAID5

RAID6RAID5

RAID1RAID6

RAID5RAID6

RAID6RAID6

• Types of volumesBesides normal volumes, you can use external volumes and custom-sized volumes. When usingexternal volumes or custom-sized volumes note the following points:

◦ External volumesThe license for XP External Storage is required.

◦ Custom-sized volumesThe license of Virtual LVI is required. To create an SIz pair with custom-sized volumes,S-VOL must be paired with T-VOLs of the same capacity and the same emulation type.

System Requirements 41

• Emulation typeOnly volumes with mainframe emulation type such as 3390-3, 3390-3A, 6588-1 can beused.You need to select the volumes of the same emulation type for S-VOL and T-VOL. However,as for the DKC emulation types, there is no restriction. The DKC emulation type for the S-VOLand T-VOL can be the same or different (for example, 3990 S-VOL and 2105 T-VOL).

• Logical DKC (LDKC), CU, LDEV numberYou can use volumes whose LDKC:CU:LDEV (a combination of an LDKC number, a CU number,and an LDEV number) is within the range of 00:00:00 to 00:FE:FF, or 01:00:00 to 01:FE:FF.

• Number of T-VOLs per one S-VOLYou can assign up to three T-VOLs to one S-VOL. However, you cannot assign two or moreS-VOLs to one T-VOL.

• Maximum number of pairsUp to 16,384 SIz pairs can be created (when S-VOLs and T-VOLs are in a one-to-onerelationship).

Even if the above requirements are fulfilled, the URz journal volumes cannot be used for creatingSIz pair.

ShadowImage for Mainframe Software RequirementsTo use ShadowImage for Mainframe, all XP hardware, microcode, and software required for SIzoperations must be installed and enabled. You also need to purchase the license key ofShadowImage for Mainframe and install it in Remote Web Console. For detailed information aboutthe license key and software installation, see the HP StorageWorks XP24000/XP20000 RemoteWeb Console User's Guide.Operate the Remote Web Console computer in modify mode to perform SIz operations. Users inview mode can only view SIz information, but they cannot create new pairs or change the pairstatus. For information about how to set up and use the Remote Web Console computer, see theHP StorageWorks XP24000/XP20000 Remote Web Console User's Guide.

License RequirementsSIz license capacity will be required for SIz S-VOLs, T-VOLs, and reserved volumes. You need tomake sure that the SIz license capacity will be larger than the total capacity of these volumes whenyou decide the SIz license capacity.Even if a volume is used for multiple purposes, only the capacity of this volume itself is added tothe total volume capacity. There is no need to multiply the capacity of this volume by the numberof purposes it is used for. For example, if you specify a volume as an S-VOL, and use it as areserved volume as well by setting its reserve attribute, only the capacity of the volume itself isadded to the total volume capacity and there is no need for it to be doubled.The following illustrations are case examples showing how to calculate the total capacity of volumesthat you will use with ShadowImage for Mainframe. For these examples, the capacity of eachvolume is assumed to be 1. The colored volume or volumes represent the volumes that are used.Figure 20 (page 43) shows one reserved volume and one unreserved volume.

42 Preparing for ShadowImage for Mainframe Operations

Figure 20 Total Capacity of SIz Volumes (Example 1)

In Figure 20 (page 43), the total capacity of the SIz volume is 1.Figure 21 (page 43) shows two SIz pairs.

Figure 21 Total Capacity of SIz Volumes (Example 2)

In Figure 21 (page 43), the total capacity of the SIz volumes is 3.

Requirements for Other SoftwareYou may use the following program products for SIz operations.

• XP for Business Continuity Manager Software™

• IBM PPRC host software: TSO PPRC and ICKDSF PPRCOPY commandsFor information about the requirements of using these program products on ShadowImage forMainframe, see the appropriate supporting documents.

Assessing ShadowImage for Mainframe RequirementsThis section describes the assessments about SIz operations, such as how many pairs you aregoing to create or how to decide the settings like copy pace and paths.

Calculating Maximum Number of PairsWhen you create SIz pairs, resources called differential tables and pair tables will be required.The number of available differential tables and pair tables in one storage system depends onwhether the additional shared memory is installed or not. There are several patterns of additionalshared memory for differential tables and pair tables, and you can choose any pattern you like.Table 14 (page 44) describes the pattern of additional shared memory.

Assessing ShadowImage for Mainframe Requirements 43

Table 14 Additional Shared Memory for Differential Tables

Num. of Volumes in StorageSystem

Num. of Pair TablesNum. of Differential TablesAdditional Shared Memoryfor SIz

1,02400No additional sharedmemory for SIz

16,3848,19226,176Additional shared memoryfor SIz is installed

16,3848,19257,600Extension 1

65,53616,384104,768Extension 2

131,07216,384146,688Extension 31

131,07216,384209,600Extension 41

1 This can be used only in the XP24000 disk array.

To install additional shared memory for differential tables call the HP technical support.Even if you install additional shared memory for differential tables and pair tables, the maximumnumber of pairs is half of the total number of volumes in the storage system (see Table 14 (page44)). For example, if additional shared memory for SIz is installed (second line in Table 14 (page44)), and when S-VOLs and T-VOLs are in a one-to-one relationship, you can create up to 8,192pairs. However, note that in the case of Extension 2 to Extension 4, the maximum number of pairsis 16,384 regardless of the total number of volumes in the storage system.To calculate the maximum number of SIz pairs, first you need to calculate how many differentialtables and pair tables are required to create SIz pairs, and then compare the result with the numberof differential tables and pair tables in the whole storage system. Note that in addition toShadowImage for Mainframe, the following program products will also use differential tables andpair tables.

• Program products using differential tablesXP Business Copy◦

◦ FlashCopy Mirroring

◦ FlashCopy Mirroring V2

◦ XP Auto LUN

◦ XP Snapshot

• Program products using pair tablesShadowImage for Mainframe◦

◦ FlashCopy Mirroring

◦ XP Auto LUN

If you use ShadowImage for Mainframe in the same storage system together with any or all of theabove program products, calculate the number of available differential tables and pair tables forSIz pairs as follows:

(differential tables and pair tables in the whole storage system) – (the number ofdifferential tables and pair tables used by the pairs (migration plans in case of XPAuto LUN) of the program products shown above) = (the number of availabledifferential tables and pair tables for SIz pairs).

For information about how to calculate the number of differential tables and pair tables that arerequired for XP Business Copy, see the HP StorageWorks XP24000/XP20000 Business CopySoftware User's Guide, and as for FlashCopy Mirroring and FlashCopy Mirroring V2, see the HPStorageWorks XP24000/XP20000 for FlashCopy Mirroring Software User's Guide. For information


about how to calculate the number of differential tables and pair tables that are required for XPAuto LUN, see the HP StorageWorks XP24000/XP20000 Auto LUN Software User's Guide andsee the HP StorageWorks XP24000/XP20000 Snapshot User's Guide to calculate the number ofdifferential tables that are required for XP Snapshot.Assuming that only ShadowImage for Mainframe uses differential tables and pair tables, this sectiondescribes how to calculate the number of differential tables and pair tables required for one SIz


pair, and the conditions you need to consider when calculating the number of SIz pairs that canbe created.


• The capacity of each volume used to create a pair (this is the capacity specified as the CVSor customized volume size)Use the following expression to calculate the total number of the differential tables and pairtables per pair.Total number of the differential tables per pair = ((X) + (Y)) × 15 ÷ (Z)

(X): The number of the cylinders of the volume(Y): The number of the control cylinders (see Table 15 (page 47))(Z): 20,448 (The number of the slots that can be managed by a differential table)Round up the number to the nearest whole number. For example, in case of a volume whichemulation type is 3390-3, and when provided that the number of the cylinders of the dividedvolume is 3,390 ((X) in the expression above), the calculation of the total number of thedifferential table is as follows.(3,339 + 6) × 15 ÷ 20,448 = 2.4537...When you round up 2.4537 to the nearest whole number, it becomes 3. Therefore, the totalnumber of the differential table for one pair is 3 when emulation type is 3390-3.You may use 36 differential table per one pair table. Therefore, the total number of the pairtables is 1 when emulation type is 3390-3. For example, if the emulation type is 3390-M andthe number of the cylinders of the volume is the default value, the number of pair tables is 2.However, only the emulation type 3390-M can be used, if you use plural pair tables on amainframe system.Table 15 (page 47) shows the number of the control cylinders according to the emulationtypes.

Table 15 Number of the Control Cylinders According to the Emulation Types

Number of the Control CylindersEmulation Type

73380-3

73380-3A

73380-3B

73380-3C

223380-F

73380-K

73380-KA

73380-KB

73380-KC

63390-3

63390-3A

63390-3B

63390-3C

63390-3R

253390-9

253390-9A

253390-9B

253390-9C


Table 15 Number of the Control Cylinders According to the Emulation Types (continued)

Number of the Control CylindersEmulation Type

233390-L

233390-LA

233390-LB

233390-LC

533390-M

533390-MA

533390-MB

533390-MC

22NF80-F

7NF80-K

7NF80-KA

7NF80-KB

7NF80-KC

If you intend to create pairs with volumes of different emulation types, the maximum numberof pairs you can create will depend on the following conditions.For details about the calculation of the total number of the differential tables per a pair, seethe expression described just before Table 15 (page 47).The maximum number of pairs that you can create is the largest number that meets the equation,( ) ( ), and ( ) ( ), where:( ) stands for the total number of differential tables per pair (see Table 15 (page 47)), and

( ) stands for the number of differential tables available in the storage system, and( ) stands for the total number of pair tables per pair, and

( ) stands for the number of pair tables available in the storage system.( ) and ( ) will differ according to the installed additional shared memory for differentialtables. For details, see Table 14 (page 44).For example, if you are to create 10 pairs of 3390-3 volumes and 20 pairs of 3390-L volumesin a storage system that has 26,176 differential tables, the following equation would be usedto calculate ( ) and ( ):( ) : (3 x 10) + (24 x 20) = 510( ) : (1 x 10) + (1 x 20) = 30

Since 510 is smaller than 26,176, and 30 is smaller than 8,192, it meets the equation, ( )( ) and ( ) ( ), thus ensuring you that 10 pairs of 3390-3 volumes and 20 pairs of

3390-L volumes can be created.

Performance ConsiderationsConsider performance options under the following considerations: for operating ShadowImagefor Mainframe, load sharing of parity groups, and resynchronizing using QuickRestore.

• When you operate ShadowImage for Mainframe:SIz operations affect the I/O performance of the XP storage system because of the additionalwrite operations to the T-VOLs. You should consider the relative importance of the storage


system’s I/O performance and the SIz operations when you decide the number or structuresof pairs and their copy pace.For example, assigning three T-VOLs to each S-VOL takes more resources than assigning onlyone or two. More T-VOLs you assign on an S-VOL, the risk of affection on the I/O performanceof the storage system increases.Even if you assign only one T-VOL on an S-VOL, pace of the initial copy operations may affectthe I/O performance of the storage system. Using a slower copy pace minimizes the impactof SIz operations on I/O performance, while a faster copy pace produces point-in-time copiesmore quickly but may affect I/O performance.

• Load sharing of parity groups:SIz S-VOLs or T-VOLs should not be concentrated in the same parity group. To disperseworkloads of the parity groups, each parity group should have both S-VOLs and T-VOLs evenlydistributed. SIz pairs for which an SIz operation is performed simultaneously should be indifferent parity groups. If SIz pairs are concentrated in only a few parity groups, the host I/Operformance may be degraded. To minimize effect on the host I/O performance, take thefollowing actions:

◦ Specify Slower for the copy pace when you create, split, or resynchronize SIz pairs.

◦ If SIz pairs that you want to perform copy operation are in the same parity group, reducethe number of pairs at one copy operation. For example, to split multiple SIz pairs in thesame parity group, wait until one pair is completely split before splitting another pair.

If the XP storage system is overloaded, you must increase cache, disk adapters, and/or paritygroups. HP recommends that SIz T-VOLs are assigned in the newly installed parity groups. Ifyou continue SIz operations with an overloaded storage system, host I/O performance maybe degraded.

• When you resynchronize a pair by Quick Restore:During the quick restore operation, the RAID levels, Cache Residency Manager for Mainframesettings, and HDD types of the S-VOL and T-VOL are exchanged. For example, if the S-VOLhas a RAID-1 level and the T-VOL has a RAID-5 level, the quick restore operation changes theRAID level of the S-VOL to RAID-5 and of the T-VOL to RAID-1. This also applies to RAID-6volumes. To avoid any performance impact due to the quick restore operation:

◦ Make sure that the S-VOL and T-VOL have the same RAID level and HDD type beforeperforming the quick restore operation. To restore the original RAID levels after quickrestore, stop host I/Os to the pair, split the pair, perform the quick restore operation forthat pair again, and then restart the host I/Os to the pair.

◦ Because the Cache Residency Manager for Mainframe settings are exchanged during aquick restore operation, you must perform one of the two following operations:– Set the same Cache Residency Manager for Mainframe settings (locations) for the

S-VOL and T-VOL before performing the quick restore operation.– Release the Cache Residency Manager for Mainframe settings of the S-VOLs and

T-VOLs before the quick restore operation, and then reset the Cache ResidencyManager for Mainframe settings of the S-VOLs and T-VOLs after the pair statuschanges to duplex status as a result of the quick restore operation.

If you do not do one of the above mentioned operations, the change of location of the cacheresidence areas may cause I/O performance to the Cache Residency Manager for Mainframedata to be down. For details about Cache Residency Manager for Mainframe settings, seethe HP StorageWorks XP24000/XP20000 Cache Residency Manager User's Guide.


Identifying the Source and Target VolumesFor each volume, write down the CU image and LDEV ID, whether the volume will be an S-VOLor T-VOL, and the other volumes in its pair (see Table 16 (page 50) for a sample table). The S-VOLswill remain fully accessible to all hosts throughout normal SIz operations (except during reversecopy and quick restore). The T-VOLs will need to be varied offline before being reserved for SIzoperations. Once assigned to a pair, a T-VOL rejects all write I/Os, except when the pair is split.

Table 16 SIz Configuration Information

Associated S-VOLT-VOL?AssociatedT-VOLs

S-VOL?LDEV #CU #

N/ANo0:10, 0:11Yes000

N/ANo0:12, 0:13Yes010

……………etc.

N/ANo0:2E, 0:2FYes0F0

0:00YesN/ANo100

0:00YesN/ANo110

0:01YesN/ANo120

……………etc.

Requirements for Maintaining ShadowImage for MainframeThis section describes the requirements for the maintenance of ShadowImage for Mainframe. Whenthe storage system maintenance is performed, or the microcode is updated, you may have to addSIz pairs again. Also note that if the SIz operations are not completed because of failures, thecopying process will be automatically suspended.

Cautions on Maintaining the Devices• Maintenance of PDEV

The maintenance of a PDEV (which is not used by ShadowImage for Mainframe) does notaffect the SIz operations and the status of SIz pairs. You can maintain a PDEV which containsLDEVs used by ShadowImage for Mainframe independently of the SIz operations or SIz pairstatus. Even if a PDEV failure occurs, SIz pair status is not affected because of the RAIDarchitecture.If a failure occurs that requires use of dynamic sparing or automatic correction copy, the statusof the paired volumes associated with the failed PDEV will not be affected.

• Maintenance of LDEVIf an LDEV failure occurs, the pair is suspended.◦

◦ If the status of an SIz pair is either Pending, Duplex, Split, SP-Pend, V-Split, Resync orResync-R, the maintenance for the LDEVs which are used by that pair will be restricted.In addition, LDEV maintenance cannot be performed on the LDEVs which are assignedto SIz reserved volumes. If LDEV maintenance requires access to a SIz reserved volumes,you need to delete or suspend the pair, or the Reserve attribute must be reset (unreserved).

Cautions on Maintaining the CacheIf HP disk array cache maintenance is performed during a period of high I/O usage, one or moreSIz pairs may be suspended. Reduce the I/O load before cache maintenance.


Cautions on Switching Off the Power SupplyIf you have to switch off the power supply of the XP storage system during SIz operations, makesure to:

• Complete copying for the SIz pair in the SP-pend or V-split status first to change the pair statusfrom SP-pend or V-split to split, and then switch off the power supply.If the shared memory is volatilized when you switch on the power supply again, the pair inthe SP-pend or V-split status changes to suspend.

• First complete the processing of At-Time Split function, and then switch off the power supply.If the status of only a part of the pairs in the same CTG is changed, the processing of At-TimeSplit function may not resume when you switch on the power supply, and the status of somepairs may remain unchanged.

• Establish a timetable for SIz copying operations according to required copying time that maytake longer because of the power-supply off.If the shared memory is volatilized when you switch on the power supply again, the followingconditions occur.

◦ If the SIz pair was in the pending or resync status, data that was already copied beforethe power-supply off again becomes the target data to be copied after the power-supplyon. Even if there is no host I/O, the data consistency rate does not reach 100% whenthe SIz pair status changes to duplex. When the SIz pair status changes to duplex, thetarget data is copied to the T-VOL.

◦ If the SIz pair was in the duplex status, data that was already copied before thepower-supply off again becomes the target data to be copied after the power-supply on.In this case, the data consistency rate is 0%, and the target data is copied to the T-VOL.

◦ If the SIz pair was in the split status, the entire volume becomes the differential data. Inthis case, the data consistency rate is 0%, and the entire volume is copied to the T-VOLwhen you perform the pairresync operation.

Installing ShadowImage for MainframeThe user enables the license key required for SIz operations on the Remote Web Console computer.To install the SIz license key:1. Log on to the SVP and start up the Java application of Remote Web Console.

For information about how to log on to the SVP, see the HP StorageWorks XP24000/XP20000Remote Web Console User's Guide.

2. Install ShadowImage for Mainframe on the Remote Web Console computer.You need to install ShadowImage for Mainframe in every storage system on which you wantto use ShadowImage for Mainframe. For information about how to install ShadowImage forMainframe, see the HP StorageWorks XP24000/XP20000 Remote Web Console User'sGuide.

Starting ShadowImage for MainframeAfter you have completed the preparation to use the Remote Web Console computer and preparedfor SIz operations, you are ready to start up ShadowImage for Mainframe.To start ShadowImage for Mainframe and display the window you need to:

Installing ShadowImage for Mainframe 51

1. Display the Remote Web Console main window.For information about how to display the Remote Web Console main window, see the HPStorageWorks XP24000/XP20000 Remote Web Console User's Guide.

2. Click Go and then ShadowImage for Mainframe on the menu bar of the Remote Web Consolemain window.Names of the windows that you need for SIz operations will be displayed in the submenu.

3. Click the name of the window you want to display.ShadowImage for Mainframe starts up, and the window whose name you clicked in thesubmenu is displayed.For details about the displayed windows, see “Using the ShadowImage for Mainframe GUI”(page 53).


5 Using the ShadowImage for Mainframe GUIThis chapter describes the ShadowImage for Mainframe windows in Remote Web Console.

• “Pair Operation Window” (page 53)

• “History Window” (page 58)

• “Option Window” (page 59)

• “CTG Window” (page 60)

Pair Operation WindowThe Pair Operation window (see Figure 22 (page 53)) displays the SIz volume and pair informationfor the selected CU image of the connected XP storage system and allows you to perform all SIzoperations.A S-VOL or T-VOL LDEV number that ends with a pound or gate symbol (#) mark indicates that theLDEV is an external volume (for example, 00:00:01 #). For details regarding the external volumes,see the HP StorageWorks XP24000/XP20000 External Storage Software User's Guide.The Pair Operation window displays pair information for SIz and relationship information forFlashCopy Mirroring and FlashCopy Mirroring V2, however, this section only explains the itemsrelated to the SIz pairs. For details about the items related to the relationships, see the HPStorageWorks XP24000/XP20000 for FlashCopy Mirroring Software User's Guide.

Figure 22 Pair Operation Window

Pair Operation Window 53

Table 17 Pair Operation Window Features

DescriptionItem

Allows you to select a defined CU image or LDEV ID. By selecting a CU image or anLDEV ID, the corresponding volume or volume pair displays in the Volume List on theupper right of the Pair Operation window. No volume displays when you select Subsystemon the top of the Tree. The tree is located on the left of the Pair Operation window.

Tree

Displays all available volumes and is located on the upper right of the Pair Operationwindow. For details, see “Volume List” (page 54).

Volume List

Indicates the status of a volume or pair in the Pair Operation window:

• : S-VOL

• : T-VOL

• : Reserved volume when displayed in the Volume List. Preview item when displayedin the Preview List.

• : An error occurred during operations. (This error icon is displayed in the PreviewList in the Pair Operation window.)

• : LDEV when displayed in the Tree. Simplex volume when displayed in the VolumeList.

• : CU (displayed in the Tree)

• : Root (displayed in the Tree)

Icons

Allows you to display the Display Filter dialog box (see “Display Filter Dialog Box”(page 64)) where you can filter the volumes displayed in the Volume List.

Display Filter button

Allows you to return to the previous page of the Volume List. This button is selectableonly when the number of volumes defined in the storage system exceeds 1,024 volumes,which is the maximum number of volumes that can be displayed on one page. It remainsdimmed when the total number of volumes defined in the storage system is less than1,024 volumes.

Previous button

Allows you to turn to the next page of the Volume List. This button is selectable only whenthe number of volumes defined in the storage system exceeds 1,024 volumes, which isthe maximum number of volumes that can be displayed on one page. It remains dimmedwhen the total number of volumes defined in the storage system is less than 1,024volumes.

Next button

Displays the content of the operations (volume/pair information) that have been set orspecified in the Pair Operation window, but are still not applied to the XP storage system.For details, see “Preview List” (page 57).

Preview List

The button applies the SIz operations displayed in the Preview List to the XP storagesystem. If the specified operations complete successfully, the Preview List will be cleared.If an error occurs during an operation, the failed operation will remain in the Preview

List with an error icon ( ) displayed on the left of the operation name. For the entirelist of SIz error codes, see the HP StorageWorks XP24000/XP20000 Remote WebConsole Error Codes.

Apply button

Cancels all the operations set in the Preview List.Cancel button

Volume ListThe Volume List (see Figure 23 (page 55)) displays the information for volumes/pairs that can beused by SIz, FlashCopy Mirroring, and FlashCopy Mirroring V2. The Volume List displays theinformation based on the filter options you select in the Tree (located along the left side of thewindow). You can sort the volumes by any of the items displayed as the column header of theVolume List. You can also filter the volumes by reserve attribute, by pair condition, and by pairstatus using the Display Filter dialog box. For information about how to use this dialog box, see“Configuring the Volume List” (page 63).

54 Using the ShadowImage for Mainframe GUI

The number of volumes that can be displayed in the Volume List at a time is limited to 1,024volumes. In case the number of volumes defined in the storage system exceeds this limit, use thePrevious and Next buttons on the upper right of the Volume List to turn the pages of the VolumeList and see the entire list.The Volume List shows all the installed volumes (LDEVs) on the selected CU image and displays theinformation for each volume.

Figure 23 Volume List

Table 18 Volume List

DescriptionItem

Displays a message when there is no volume or pair to display. If you see the messagein the Volume List, click a different icon in the Tree on the left area of the Pair Operationwindow.

Message

Displays the S-VOL information in XX:YY:ZZ (LDKC number: CU number: LDEV ID) format.S-VOL

Displays the status of the SIz pair and FlashCopy Mirroring relationships. For detailedinformation about the relationship status, see the HP StorageWorks XP24000/XP20000for FlashCopy Mirroring Software User's Guide.

Status

Displays the information for the T-VOL is displays in XX:YY:ZZ (LDKC number: CU number:LDEV ID) format. If there is no T-VOL, --- displays.

T-VOL

Displays the specified copy pace. For details, see Table 19 (page 56).Copy Pace

Displays the information displayed under this column varies according to the pair status.For details, see Table 20 (page 56).

Sync.

Displays the emulation type of the paired volume. For details on the emulation type, see“Number of the Control Cylinders According to the Emulation Types” (page 47).

Emulation

Displays the number of cylinders assigned to the volume.Capacity(Cyl)

Displays the registered ID of the CTG. If there is no CTG, --- displays.CTG

Displays the cache logical partition of the T-VOL.CLPR (T)

Displays the current state of the volume in terms of whether the FlashCopy Mirroring V2relationship is established or not. For details, see the HP StorageWorksXP24000/XP20000 for FlashCopy Mirroring Software User's Guide.

Relationship(S)

Information to be displayed in Copy Pace and Sync. depends on the status of the pair, as shownin Table 19 (page 56) and Table 20 (page 56).


Table 19 Displayed Information in Copy Pace

Displayed InformationPair Status

- - - is displayed.Simplex

The copy pace (Slower, Medium, or Faster) for the pair being created.Pending

- - - is displayed.Duplex

The copy pace (Slower, Medium, or Faster) for the pair being created.SP-Pend

V-Split

- - - is displayed.Split

The copy pace (Slower, Medium, or Faster) for the pair being created.Resync

Resync-R

- - - is displayed.Suspend

F-Copy

Deleting

Table 20 Displayed Information in Sync.

Displayed InformationPair Status

- - - is displayed.Simplex

The progress (%) of copying.Pending

Identical data (%) of S-VOL and T-VOL.Duplex

Copy completed data (%).SP-Pend

V-Split

Identical data (%) of S-VOL and T-VOL.Split

Resync

Resync-R

- - - is displayed.Suspend

Copy completed data (%).F-Copy

- - - is displayed.Deleting

You can perform SIz operations for the desired volumes in the Volume List, by using the followingmenu commands that you can display by right-clicking the mouse while selecting the desired volumein the Volume List.

Table 21 ShadowImage for Mainframe Menu Commands for the Pair Operation Window

FeatureCommand

Opens the Detail dialog box that displays information for the selected volume or pair(see “Detail Dialog Box” (page 86)).

Detail

Opens the Add Pair dialog box, which allows you to create (add) new SIz pairs (see“Add Pair Dialog Box” (page 70)).

Add Pair

Opens the Split Volume Pair dialog box, which allows you to split SIz pairs (see “SplitVolume Pair Dialog Box” (page 74)).

Split Pair

Opens the Resynchronize Volume Pair dialog box, which allows you to resynchronizeSIz pairs (see “Resynchronize Volume Pair Dialog Box” (page 82)).

Resync Pair


Table 21 ShadowImage for Mainframe Menu Commands for the Pair OperationWindow (continued)

FeatureCommand

Opens the Suspend Volume Pair dialog box, which allows you to suspend SIz pairs (see“Suspend Volume Pair Dialog Box” (page 80)).

Suspend Pair

Opens the Delete Volume Pair dialog box, which allows you to delete SIz pairs (see“Delete Pair Dialog Box” (page 85)).

Delete Pair

Opens the Set Reserve Attribute dialog box or Reset Reserve Attribute dialog box allowsyou to set/reset the SIz reserve attribute (see “Set Reserve Attribute Dialog Box” (page 66)and “Reset Reserve Attribute Dialog Box” (page 67)).

Change Reserve

Opens the Information dialog box (see “Information Dialog Box” (page 88)), whichdisplays the number of SIz pairs or reserved volumes.

Information

Preview ListThe Preview List (see Figure 24 (page 57)) is located below the Volume List, and lists the operations(volume/pair information), which have not been applied to the storage system.

Figure 24 Preview List

Table 22 Preview List Operations

DescriptionItem

Displays S-VOL information in XX:YY:ZZ (LDKC number: CU number: LDEV ID) format.S-VOL

Displays T-VOL information in XX:YY:ZZ (LDKC number: CU number: LDEV ID) format.T-VOL

Displays copying pace information for all pairs being added.Copy Pace

Displays the cache logical partition information (CLPR) of the S-VOL.CLPR (S)

Displays the cache logical partition information (CLPR) of the T-VOL.CLPR (T)

Displays the reason code if the preview operations (settings) cannot be applied successfullywith the Apply button.

Error Code

The following information displays in the information field below the Preview List:Preview: X(Y)/Z, where:X = the number of settings remaining in the Preview List that are still not applied to the HP diskarray.Y = the type of pair operationZ = command optionYou can change the Preview List by right-click the setting in the Preview List and display the menus.Table 23 (page 58) shows the available menu commands in the Preview List.


Table 23 ShadowImage for Mainframe Menu Commands for the Preview List

FeatureCommand

Cancels the selected settings. If you perform this command, the selected settings will becleared.

Delete

Allows you to change the setting of the selected operation. This command becomesaccessible only when the item you select from the Preview List is set to Add Pair, SplitPair or Resync Pair operation.

Modify

Displays the error message box, which displays the error code and message. For theSIz error codes, see the HP StorageWorks XP24000/XP20000 Remote Web ConsoleUser's Guide.

Error Detail

History WindowThe History window (see Figure 25 (page 58)) displays the past record of pair and relationshipoperations. For information about how to look up the operation history, see “Viewing PairOperations History” (page 89).An S-VOL or T-VOL LDEV number that ends with a pound or gate symbol (#) mark indicates thatthe LDEV is an external volume (for example, 00:00:01 #). For details about the external volumes,see the HP StorageWorks XP24000/XP20000 External Storage Software User's Guide.An S-VOL LDEV number that ends with the letter M indicates that the LDEV is a migration volume(for example, 00:00:01 M).The upper area of the History window lists the operation history of SIz pairs and Version 1relationships, and the lower area of the window lists the operation history of Version 2 relationships.For details about the operation history of Version 1 and Version 2 relationships, see the HPStorageWorks XP24000/XP20000 for FlashCopy Mirroring Software User's Guide.

Figure 25 History Window


Table 24 History Window

DescriptionItem

Allows you to return to the previous page of the list. This button is selectable only whenthe number of operation histories in the storage system exceeds 16,384, which is themaximum number of histories that can be displayed on one page. The button is grayedout if the total number of operation histories in the storage system is less than 16,384.

Previous button

Allows you to turn to the next page of the list. This button is selectable only when thenumber of operation histories in the storage system exceeds 16,384 volumes, which isthe maximum number of histories that can be displayed on one page. The button isgrayed out if the total number of operation histories in the storage system is less than16,384.

Next button

Displays the date and time (YYYY/MM/DD hour/min/sec) when a SIz pair or volumeoperation has been performed.

Date

Displays the LDKC:CU:LDEV of the S-VOLs used for pair operation in the past.S-VOL

Displays the LDKC:CU:LDEV of the T-VOLs used for pair operation in the past.T-VOL

Displays the reference codes of ShadowImage for Mainframe.Code

Displays the messages to inform the conditions of the past SIz pair. For details about themessages, see Table 25 (page 59).

Message

Table 25 ShadowImage for Mainframe Status & History Reference Codes and Messages

DescriptionMessageCode

The SIz initial copy operation started.DUPLEX START4710

The SIz initial copy operation ended, and thepair status changed to Duplex.

DUPLEX END4720

The SIz split operation started.SPLIT START4730

The SIz split operation ended, and the pairstatus changed to Split.

SPLIT END4740

The SIz resync operation started.RESYNC STARTRESYNC-R START

4750

The SIz resync operation ended, and the pairstatus changed to Duplex.

RESYNC ENDRESYNC-R END

4760

The SIz pair is deleted, and the pair statuschanged to Simplex.

PAIR DELETE4780

The SIz pair suspended, and the pair statuschanged to Suspend.

PAIR SUSPEND4790

A copy ended abnormally (reason other thanabove).

PENDING ABNORMAL END47D0

Initialization started.INITIALIZE START47E9

Initialization ended normally.INITIALIZE END47EA

Initialization ended abnormally.INITIALIZE ENDED ABNORMAL47EB

Option WindowYou can set options for ShadowImage for Mainframe in the Option window (see Figure 26 (page60)). For detailed information about how to set options, see “Setting Options” (page 68).

Option Window 59

Figure 26 Option Window

Table 26 Option Window

DescriptionItem

Enables an option name when you check the check box of an option name. If you clearthe check box, that option will be disabled. Note that only options that are available forSIz in this box are Swap & Freeze and HOST I/O Performance. FCv2 Slower Copy1 andFCv2 Slower Copy2 are the options for FlashCopy Mirroring V2. See the HP StorageWorksXP24000/XP20000 for FlashCopy Mirroring Software User's Guide for detailedinformation about these options.Even if you have selected the check boxes of other option names, they will not be enabled.

Select Option(s) box

Applies the SIz options checked in the Select Option(s) box to the storage system.Apply button

Cancels all the options set in the Select Option(s) box.Cancel button

CTG WindowThe CTG window (see Figure 27 (page 61)) displays the information for the selected CTGs(abbreviated hereafter to CTG or CT Group where applicable) that are either registered or notused.


Figure 27 CTG Window

Table 27 CTG Window

DescriptionItem

Displays all the CTGs in layers, regardless of their registrations and is located on the leftof the CTG window.• To display all the CTGs, select Subsystem on the top of the Tree. Note that the CTGs

that you can display in the CTG window are only those reserved in a mainframestorage system.

• To display only the reserved CTGs, select Reserved.

• To display only the unreserved CTGs, select Free.

• To display only the CTGs that are currently used (meaning those with registered pairs),select Used.

CTG Tree

Displays the following information and is located on the right of the CTG window.• CTG: Displays the ID of the CTGs selected in the CTG Tree by attribute or by Subsystem

on the top of the tree. Note that the CTGs that you can display in the CTG windoware only those reserved in a mainframe storage system.

• Group Status: Displays the status of the selected CTGs displayed with an ID. If thestatus of the CTG has been changed due to operations performed earlier, the lateststatus will be displayed. In case a CTG operation could not be applied successfullyto the XP storage system after clicking the Apply button, the data of the CTG beforethe operation has been applied to the XP storage system displays. The status of theCTGs displayed here will be one of the following three:◦ Used: Status indicating that the CTG is used.

◦ Reserved: Status indicating that the CTG is reserved.

◦ Free: Status indicating that the CTG is not used.

• Code: Displays the error code when a CTG operation fails to be applied to the XPstorage system.

CTG List

CTG Window 61

Table 27 CTG Window (continued)

DescriptionItem

Applies the SIz operations displayed in the CTG List to the XP24000/XP20000 storagesystem.

Apply button

Cancels all the ongoing operations specified in the CTG List without applying them tothe XP24000/XP20000 storage system.

Cancel button

To perform a CTG operation, use the desired command selected from the menu that can bedisplayed by right-clicking one of the CTGs displayed in the CTG List that you want to work on.Table 28 (page 62) shows the available menu commands in the CTG List.

Table 28 ShadowImage for Mainframe Menu Commands for the CTG List

FeatureCommand

Select this command when you want to reserve a free CTG. When you select thiscommand, the new CTG will be ready to be added. Note that this command will remaindimmed when you open the menu by right-clicking a CTG whose status is not set to Free.

Add CT Group

Select this command when you want to change the status of a reserved CTG to Free.When you select this command, the CTG will be ready to change its status of unusedCTG. Note that this command will remain dimmed when you open the menu byright-clicking a CTG whose status is already set to Free.

Delete CT Group

Select this command when you want to display the information for a pair or pairsregistered in the selected CTG. When you select this command, the CT Group Statusdialog box opens. Note that this command will remain dimmed when you open the menuby right-clicking a CTG whose status is set either to Reserved or Free.

CT Group Status

Select this command when you want to display the error information for the CTG operationthat failed. Note that this command will remain dimmed when there is no error.

NOTE: For the list of SIz error codes and corrective actions, see the HP StorageWorksXP24000/XP20000 Remote Web Console User's Guide.

Error Detail


6 Performing ShadowImage for Mainframe OperationsUsing Remote Web Console

This chapter provides instructions for performing ShadowImage for Mainframe operations usingthe ShadowImage for Mainframe software on Remote Web Console.

• “Configuring the Volume List” (page 63)

• “Changing or Deleting the Settings in Preview List” (page 65)

• “Setting or Resetting the Reserve Attribute” (page 65)

• “Setting Options” (page 68)

• “Configuring CTGs” (page 68)

• “Adding Pairs” (page 70)

• “Splitting Pairs” (page 73)

• “Suspending Pairs” (page 80)

• “Resynchronizing Pairs” (page 81)

• “Deleting Pairs” (page 84)

• “Viewing Detailed Volume and Pair Information” (page 86)

• “Viewing the Number of Pairs and License Information” (page 87)

• “Viewing Pair Operations History” (page 89)To check the result or progress of the operations or to display the latest information in the windows,click File and then Refresh on the menu bar of the Remote Web Console main window.

Configuring the Volume ListThe Display Filter dialog box allows you to filter the volumes displayed in the Volume List by reserveattribute, by pair condition, and by pair status.

Configuring the Volume List 63

Figure 28 Display Filter Dialog Box

The Display Filter dialog box has the following features:

• The CLPR list allows you to display the specified cache logical partition (CLPR).

• The Volume Type box:The Internal VOL check box allows you to display the internal volumes.◦

◦ The External VOL check box allows you to display the external volumes.Both check boxes are selected by default. Select either one of these two check boxes, otherwiseall the settings in the Display Filter dialog box become invalid.

• The Attribute box:The Reserved check box allows you to display reserved or unreserved volumes. If youselect the Reserved check box, reserved volumes and volumes specified as the T-VOL are

◦

displayed in the Volume List. If you clear the Reserved check box, only unreserved volumesare displayed.If you select the Reserved check box, you cannot select any other check boxes.Volumes specified as the T-VOL of an SIz pair are automatically reserved by the storagesystem.

◦ The Pair check box allows you to display paired volumes.

◦ The Non-Pair check box allows you to display non-paired (simplex) volumes.

• The Pair Status box allows you to filter the pairs displayed in the Volume List by pair status.If you select the check boxes, you can display the pairs in those statuses. Since F-Copy is thestatus of Version 1 relationships, you do not need to select this check box when you are usingShadowImage for Mainframe.

• The OK button applies the settings, and closes the dialog box.

• The Cancel button resets the settings, and closes the dialog box.

64 Performing ShadowImage for Mainframe Operations Using Remote Web Console

To configure the Volume List:1. Click Display Filter in the Pair Operation window.

The Display Filter dialog box displays.

2. Select the CLPR where the volumes you want to display in the Volume List belong, and thenselect the check boxes of volume type, attribute, and pair status.

3. Click OK.The Display Filter dialog box closes and only the volumes that meet the conditions you set inthe dialog box will display in the Volume List.

The settings in the Display filter dialog box are only effective within the current SIz operations. Ifyou switch to another program option, or click a button on the toolbar in the Remote Web Consolemain window, the settings in the Display Filter dialog box will be reset.

Changing or Deleting the Settings in Preview ListThe Preview list temporarily retains multiple operations of the same type. The setting in the Previewlist will be reflected in the storage system when you click Apply. If the specified operations completesuccessfully, the Preview list will be cleared. If an error occurs during an operation, the failedoperation will remain in the Preview list with an error icon ( ) displayed on the left of the operationname.The setting of the Preview list can be changed or deleted only before clicking Apply. Proceduresfor changing and deleting the setting of the Preview list are as below.

Changing the Settings in Preview ListTo change the settings of the Preview list:1. Verify that the Preview list shows settings made in the Add Pair dialog box, Split Volume Pair

dialog box, or Resynchronize Volume Pair dialog box.2. Select and right-click the setting you want to change.

A menu will be displayed.

3. Select the Modify command from the menu.The dialog box which enables you to change the selected setting will be displayed.

4. Change the setting and click OK.The dialog box will close and the change of the setting will be reflected in the Preview list.

Deleting the Settings in Preview ListTo delete all of the settings in the Preview list, click Cancel.To delete only some of the settings in the Preview list:1. Select and right-click the setting that you want to delete.


2. Select the Delete command from the menu.Only the selected setting will be deleted from the Preview list.

Setting or Resetting the Reserve AttributeYou set reserve attribute to the volumes when you want to make sure that you can use those volumesfor SIz T-VOLs. This section describes how to set and reset the reserve attribute.

Changing or Deleting the Settings in Preview List 65

Setting the Reserve AttributeThe Set Reserve Attribute dialog box (see Figure 29 (page 66)) enables you to set the reserveattribute for the Simplex volumes selected in the Pair Operation window, and reserve the volumesas SIz T-VOLs.

Figure 29 Set Reserve Attribute Dialog Box

The Set Reserve Attribute dialog box displays the unreserved simplex volumes that you selected inthe Pair Operation window.

• Volume: information for the volume displays in XX:YY:ZZ (LDKC number: CU number: LDEVnumber) format.

• Emulation: The emulation type of the volume.

• Capacity (Cyl): The number of the cylinders of the volume displays.

• CLPR: The cache logical partition of the volume displays.

• The OK button allows you to set the reserve attribute for unreserved volumes.The settings will be displayed in the Preview List in the Pair Operation window. To apply thesettings to the storage system, click Apply in the Pair Operation window.

• The Cancel button closes the Set Reserve Attribute dialog box without setting the reserveattribute.

To reserve one or more volumes for use as SIz T-VOLs (by setting the reserve attribute):1. From the host, set the volumes that you will be reserving to offline.

The storage system will reject all read/write I/Os to reserved volumes (except when in thesplit status).

2. Go to the Pair Operation window, and select the desired CU image in the Tree.3. Select and right-click the desired Simplex volumes. The menu displays.

To display only the Simplex volumes in the Volume List, use the Display Filter dialog box.

4. Select the Change Reserve command in the menu.The Set Reserve Attribute dialog box opens.Select only unreserved and unpaired volumes in order to use the Change Reserve command.

5. On the Set Reserve Attribute dialog box, assure that the right volumes are displayed, and thenclick OK.The setting will be reflected in the Preview List in the Pair Operation window.


6. Click Apply in the Pair Operation window.The settings are reflected in the storage system.

7. Verify that the settings are reflected in the XP storage system.You can check whether the attribute setting is updated or not on the Display Filter dialog box.

Resetting the Reserve AttributeThe Reset Reserve Attribute dialog box (see Figure 30 (page 67)) enables you to reset the reserveattribute for (for example, unreserve) the volumes selected in the Pair Operation window.

Figure 30 Reset Reserve Attribute Dialog Box

The Reset Reserve Attribute dialog box displays the reserved volumes that you selected in the PairOperation window.

• Volume: Information for the volume displays in XX:YY:ZZ (LDKC number: CU number: LDEVnumber) format.

• Emulation: The emulation type of the volume.

• Capacity (Cyl): The number of the cylinders of the volume displays.

• CLPR: The cache logical partition of the volume displays.

• The OK button resets the reserve attribute of the SIz T-VOLs and sets the status of the volumesback to simplex.The settings will be displayed in the Preview List in the Pair Operation window. To apply thesettings to the storage system, click the Apply button in the Pair Operation window.

• The Cancel button closes the Reset Reserve Attribute dialog box without resetting the reserveattribute.

To unreserve one or more volumes (by resetting the reserve attribute):1. Make sure that the volumes you want to unreserve are no longer assigned to SIz pairs as

T-VOLs.If the reserved volume is assigned to an SIz pair, delete the pair before you unreserve thevolume. See “Deleting Pairs” (page 84) for instructions on deleting SIz pairs.

2. Go to the Pair Operation window, and select the CU image in the Tree.3. Select and right-click the desired Simplex volumes.

The menu displays.To display only the Simplex volumes in the Volume List by using the Display Filter dialog box.

Setting or Resetting the Reserve Attribute 67

4. Select the Change Reserve command in the menu.The Reset Reserve Attribute dialog box opens.Select only reserved and unpaired volumes to use the Change Reserve command.

5. On the Reset Reserve Attribute dialog box, assure that the right volumes display, and thenclick OK.The setting will be reflected in the Preview List in the Pair Operation window.

6. Click Apply in the Pair Operation window.The settings are reflected in the storage system.You can check whether the attribute setting is updated or not on the Display Filter dialog box.

Setting OptionsThe Option window (see “Option Window” (page 60)) allows you to specify the options to expandSIz operations.To set options:1. Display the Option window.

If you are already displaying the other window shown by a tab, click the Option tab. Forinformation about how to display the Option window directly by starting Remote Web Console,see “Starting ShadowImage for Mainframe” (page 51).

2. Select the check box of the option you want to set.For detailed information about options, see “ShadowImage for Mainframe Options” (page 25).If you do not want to set any option, clear all check boxes in the Select Option(s) box.

3. Click Apply.You can now perform SIz operations with the specified option.

Configuring CTGsThis section describes the instructions on setting or resetting the reserve attribute to a CTG. To checkthe information for the pairs in the CTG before set the reserve attribute to the group, do the followingprocedure:1. Display the CTG window (see “CTG Window” (page 61)).

If you are already displaying the other window shown by a tab, click the CTG tab. Forinformation about how to display the CTG window directly by starting Remote Web Console,see “Starting ShadowImage for Mainframe” (page 51).

2. Select and right-click the CTG in the CTG List in the window.The menu displays.

3. Select the CT Group Status command in the menu.The CT Group Status dialog box displays.

The information for the registered pairs displayed in the CT Group Status dialog box is only fordisplay and cannot be edited to perform any pair operation.


Figure 31 CT Group Status Dialog Box

The items displayed in the CT Group Status dialog box are as follows:

• CTG list allows you to select the CTG that you want to display in the Pair Information List.

• Pair Information List, located below the CTG list, displays the following information pertainingto the pair or pairs registered in the selected CTG.◦ S-VOL: Displays the ID (LDKC:CU:LDEV) of the S-VOL of the pair registered in the selected

CTG.An LDEV number that ends with pound or gate symbol (#) indicates that the LDEV is anexternal volume (for example, 00:00:01#). For details regarding the external volumes,see the HP StorageWorks XP24000/XP20000 External Storage Software User's Guide.

◦ Status: Displays the current status of the selected pair.

◦ T-VOL: Displays the ID (LDKC:CU:LDEV) of the S-VOL of the pair registered in the selectedCTG.An LDEV number that ends with a pound or gate symbol (#) indicates that the LDEV is anexternal volume (for example, 00:00:01#). For details regarding the external volumes,see the HP StorageWorks XP24000/XP20000 External Storage Software User's Guide.

◦ Sync.: Displays the rate of copying in progress between the selected pair.

◦ Emulation: Displays the emulation type of the selected pair.

◦ Capacity(Cyl): Displays the volume capacity by the number of cylinders.

◦ CLPR(S): The cache logical partition of the S-VOL displays.

◦ CLPR(T): The cache logical partition of the T-VOL displays.

• The Close button closes the CT Group Status dialog box.

Setting the Reserve Attribute of a CTGTo set the reserve attribute of one or more CTGs:1. In the CTG window, select the desired CTG or its status displayed in the Tree.

The CTG that you have just selected displays in the CTG List.

2. Select the CTG that you want to set the reserve attribute. Then right-click the selected CTG tomake the menu appear, and select the Add CT Group command from the menu.

Configuring CTGs 69

3. Repeat steps 1 and 2 until the CTG List in the CTG window displays all the desired CTGsettings.

4. Set the reserve attribute of the selected CTG by clicking the Apply button displayed in thelower part of the CTG window.The result of the Add CT Group command will then be displayed in the CTG window.

Resetting the Reserve Attribute of a CTGTo reset the reserve attribute of one or more CTGs:1. In the CTG window, select the desired CTG displayed under the Reserved in the Tree.

The CTG information that you selected is displays in the CTG List.

2. Select the CTG that you want to reset the reserve attribute. Then right-click the selected CTGto make the command menu appear, and select the Delete CT Group command from the menu.

3. Repeat steps 1 and 2 until the CTG List in the CTG window displays all the desired CTGsettings.

4. Delete the CTG by clicking the Apply button displayed on the lower part of the CTG window.The result of the Delete CT Group command will then be displayed in the CTG window.

Adding Pairs

WARNING! The ShadowImage for Mainframe add pair operation overwrites all data on theT-VOLs. The user is responsible for backing up the data on the T-VOLs before adding SIz pairs.

The Add Pair dialog box (see Figure 32 (page 70)) allows you to select the T-VOLs for each S-VOL,set the copy pace for all pairs being added, and start the Add Pair operations.To add new SIz pairs and then split them immediately so that you can access the T-VOLs as soonas possible, add the pair from the Split Pair Volume dialog box instead of the Add Pair dialogbox. For details, see “Performing Pair Addition and Pair Splitting” (page 77).

Figure 32 Add Pair Dialog Box


The Add Pair dialog box consists of the following components.

• Add Pair Volume ListThe Volume List located on the upper side of the Add Pair dialog box displays the followinginformation pertaining to the P-VOL and S-VOL used for adding a pair:

◦ S-VOL: The LDKC:CU:LDEV of the S-VOL.An LDEV number that ends with a pound or gate symbol (#) indicates that the LDEV is anexternal volume (for example, 00:00:01#). For details regarding the external volumes,see the HP StorageWorks XP24000/XP20000 External Storage Software User's Guide.

◦ Status: The pair status.

◦ T-VOL: The LDKC:CU:LDEV of the T-VOL.An LDEV number that ends with a pound or gate symbol (#) indicates that the LDEV is anexternal volume (for example, 00:00:01#). For details regarding the external volumes,see the HP StorageWorks XP24000/XP20000 External Storage Software User's Guide.

◦ Emulation: The emulation type of the S-VOL and T-VOL.

◦ Capacity(Cyl): The number of cylinders assigned to the volume.

◦ CLPR(S): The cache logical partition of the S-VOL.

◦ CLPR(T): The cache logical partition of the T-VOL.

• The Copy Pace list allows you to select the copy pace (from Slower, Medium, or Faster) forall pairs being added.When the Preview List already holds some Add Pair operation settings, and you specify adifferent copy pace for new pairs in the Add Pair dialog box, the copy pace for the existingAdd Pair settings displayed in the Preview List will be also changed. The latest copy pacespecified in the Add Pair dialog box is always reflected to the storage system.If you specify Slower, the pace of initial copying will be slow, but you can minimizes theimpact of SIz operations on storage system I/O performance. If you specify Faster, the initialcopy operation completes as quickly as possible, but it will cause a large impact on the I/Ooperation.

• The Select T-VOL box allows you to filter the T-VOLs displayed in the T-VOL List on the right.The LDKC list allows you to select the LDKC of the T-VOL.◦

◦ The CU list allows you to select the CU image of the T-VOL.

◦ The Volume Type box:The Internal VOL check box allows you to select the available T-VOLs that are internalvolumes.

–

– The External VOL check box allows you to select the available T-VOLs that are externalvolumes. Note that you need the XP External Storage features to select the externalvolumes.

◦ The Reserved check box allows you to display reserved or unreserved volumes. If youselect the Reserved check box, only reserved volumes are displayed in the Volume List.If you select the Not Reserved check box, only unreserved volumes are displayed.

• The Previous button allows you to return to the previous page of the T-VOL List. This button isselectable only when the number of volumes defined in the storage system exceeds 1,024volumes, which is the maximum number of volumes that can be displayed on one page. Itremains dimmed when the total number of volumes defined in the storage system is less than1,024 volumes.

Adding Pairs 71

• The Next button allows you to turn to the next page of the T-VOL List. This button is selectableonly when the number of volumes defined in the storage system exceeds 1,024 volumes,which is the maximum number of volumes that can be displayed on one page. It remainsdimmed when the total number of volumes defined in the storage system is less than 1,024volumes.

• The T-VOL List displays the following information related to T-VOLs:Volume: The ID (LDKC:CU:LDEV) of the T-VOL.◦

◦ Emulation: The emulation type of the T-VOL.

◦ Capacity(Cyl): The capacity of the T-VOL (the number of cylinders).

◦ CLPR: The cache logical partition (CLPR) of the T-VOL.

• The Set button adds the selected T-VOL and S-VOL to the Add Pair Volume List as a new SIzpair.

• The Change button replaces the T-VOL of the selected pair in the list with the selected T-VOL.

• The OK button adds the operation (setting) to add a new pair using the S-VOL and T-VOL youselected in the Add Pair dialog box to the Preview List in the Pair Operation window.To apply all the new pair operation settings displayed in the Preview List to the storage system,click Apply in the Pair Operation window.

• The Cancel button cancels the operations set in the Add Pair dialog box and closes the dialogbox.

To add one or more new SIz pairs:1. Make sure that the desired T-VOLs are offline.

Reserved volumes are offline. For information about how to set the reserve attribute to a volume,see “Setting the Reserve Attribute” (page 66).

2. Go to the Pair Operation window, and select the desired CU image or S-VOL in the Tree tofilter the volumes displayed in the Volume List.

3. Select and right-click the desired S-VOLs for the new pairs to display the menu, and then selectthe Add Pair command to open the Add Pair dialog box.Do not select any reserved volumes as the S-VOL.

4. On the Add Pair dialog box, select from the Copy Pace list, the initial copy pace for all pairsbeing added.

5. Verify that the Add Pair dialog box displays the desired S-VOLs.To remove any volumes from the list, select and right-click the volumes to display the menu,and then select the Delete command.

6. Select the T-VOLs for each S-VOL as follows:a. Select the desired S-VOL from the Add Pair Volume List.b. Select the desired LDKC from the LDKC list, and then select the desired CU image from

the CU list in the Select T-VOL box.c. Select the Reserved check box to display reserved volumes, and then select from the

reserved volumes displayed in the T-VOL List, the one that you want to use as the T-VOLof the new SIz pair.You can also select an unreserved volume as the T-VOL. When you add the pair, thestorage system changes the reserve attribute to Reserved automatically.


d. Click Set to create (add) the T-VOL to the selected S-VOL. The T-VOL will then be displayednext to the selected S-VOL.

e. To add a second and/or third T-VOL to the same S-VOL, repeat steps b through d to addeach T-VOL to the selected S-VOL. Each pair to be created displays separately in the AddPair Volume List.

7. Repeat step 6 until all desired pairs are displayed.Use the Change button to replace a T-VOL. Use the Set button to add a T-VOL. To removepairs from the Add Pair dialog box, select the Delete command from the menu that appearswhen you right-click the pair that you want to remove.

8. When the Add Pair dialog box displays the desired new pairs, click OK to reflect all pairs(settings) in the Add Pair Volume List to the Preview List in the Pair Operation window.

9. In the Pair Operation window, click Apply to apply the operations set in the Add Pair dialogbox to the storage system.When the initial copy operations start, the Pair Operation window shows the new pairs withpending status and the progress (%) of the initial copy operations.

Table 29 (page 73) describes the relationship between the pair status and the availability of SIzpair operations on the pairs. (CMD RJT = command rejected.)

Table 29 Relationship between the Pair Status and the Pair Operations

Pair OperationsPair Status

Delete PairSuspend VolumePair

ResynchronizeVolume Pair

Split Volume PairAdd Pair

YESYESNO (CMD RJT)YESNO (CMD RJT)1Pending

YESYESNO (CMD RJT)YESNO (CMD RJT)1Duplex

YESYESNO (CMD RJT)NO (CMD RJT)1NO (CMD RJT)1SP-Pend

NO (CMD RJT)YESYESNO (CMD RJT)1NO (CMD RJT)1V-Split

YESYESYESNO (CMD RJT)1NO (CMD RJT)1Split

YESYESNO (CMD RJT)NO (CMD RJT)1NO (CMD RJT)1Resync

YESYESNO (CMD RJT)NO (CMD RJT)1NO (CMD RJT)1Resync-R

YESNO (CMD RJT)YESNO (CMD RJT)1NO (CMD RJT)1Suspend

1 The operation to the S-VOL is available.

Splitting PairsThe Split Volume Pair dialog box (see Figure 33 (page 74)) allows you to split existing ShadowImagefor Mainframe pairs. The Split Volume Pair dialog box can also be used to simultaneously addand split new SIz pairs.For information about how to split pairs, see “Performing Only Pair Splitting” (page 77). Forinformation about how to create and split pairs, see “Performing Pair Addition and Pair Splitting”(page 77). In addition, you can split multiple pairs at the same specified time by using XP forBusiness Continuity Manager Software™. For details, see “Performing At-Time Split Operation(Multiple Pair Splitting)” (page 78).

Splitting Pairs 73

Figure 33 Split Volume Pair Dialog Box

The Split Volume Pair dialog box consists of the following components.

• Split Volume Pair Volume ListThe Volume List located on the upper side of the Split Volume Pair panel displays the followinginformation pertaining to the S-VOL and T-VOL of the pair that you want to split:


◦ Status: The pair status.

◦ T-VOL: The LDKC:CU:LDEV of the T-VOL.An LDEV number that ends with pound or gate (#) indicates that the LDEV is an externalvolume (for example, 00:00:01#). For details regarding the external volumes, see theHP StorageWorks XP24000/XP20000 External Storage Software User's Guide.





• The Copy Pace list allows you to select the copy pace (from Slower, Medium, or Faster) forall the pairs that you are splitting.When the Preview List already holds some Split Volume Pair operation settings, and youspecify a different copy pace for new pairs in the Split Volume Pair dialog box, the copy pacefor the existing Split Volume Pair operation settings displayed in the Preview List will be alsochanged. The latest copy pace specified in the Split Volume Pair dialog box is always reflectedto the storage system.


If you specify Slower, the pace of copying will be slow, but you can minimizes the impact ofSIz operations on storage system I/O performance. If you specify Faster, the copy operationcompletes as quickly as possible, but it will cause a large impact on the I/O operation.

• The Select Split Type list allows you to select the split type (from Quick Split or Steady Split)for all the pairs that you are splitting.Table 30 (page 75) lists read/write operations from the host servers to the volumes duringthe split pair operation.

Table 30 Operations from the Host Servers during the Split Pair Operation

Steady SplitQuick SplitVolumesOperations

Both areas which are not copied and areas which are already copied canbe read as usual.

S-VOLRead

Cannot be read. Read processing willfinish abnormally.

The areas which are already copiedcan be read as usual.If the host server tries to read thearea which is not copied yet, firstlyShadowImage for Mainframe copiesthat area from the S-VOL, and thenthe host server will read the areaafter the copy operation completes.Therefore, the result will be the sameas when the host server reads thearea which is already copied.

T-VOL

Write operation for the area which is already copied to the T-VOL isperformed normally.If the host server tries to write data to the area which is not copied yet, newdata will be written after the old data is copied to the T-VOL. S-VOL dataduring the split operation will therefore be copied to the T-VOL for sure.

S-VOLWrite

Cannot be written. Write processingwill finish abnormally.

The areas which are already copiedcan be written as usual.If the host server tries to write datato the area which is not copied yet,firstly ShadowImage for Mainframecopies that area from the S-VOL,and then the host server will writedata to the area after the copyoperation completes. Therefore, theresult will be the same as when thehost server writes data to the areawhich is already copied.

T-VOL

• The Select T-VOL box allows you to filter the T-VOLs displayed in the T-VOL List on the right.The LDKC list allows you to select the LDKC of the T-VOL.◦

◦ The CU list allows you to select the CU image of the T-VOL.

Splitting Pairs 75

◦ The Volume Type box:The Internal VOL check box allows you to select the available T-VOLs that are internalvolumes.

–

– The External VOL check box allows you to select the available T-VOLs that are externalvolumes. Note that you need the XP External Storage features to select the externalvolumes.

◦ The Reserved check box allows you to display reserved or unreserved volumes. If youselect the Reserved check box, only reserved volumes are displayed in the Volume List.If you select the Not Reserved check box, only unreserved volumes are displayed.The number of secondary volumes that can be displayed in the T-VOL List at a time islimited to 1,024 volumes. In case the number of volumes defined in the storage systemexceeds this limit, use the Previous and Next buttons on the upper right of the T-VOL Listto turn the pages of the T-VOL List and see the entire list.

• The Previous button allows you to return to the previous page of the T-VOL List. This button isselectable only when the number of volumes defined in the storage system exceeds 1,024volumes, which is the maximum number of volumes that can be displayed on one page. Itremains dimmed when the total number of volumes defined in the storage system is less than1,024 volumes.

• The Next button allows you to turn to the next page of the T-VOL List. This button is selectableonly when the number of volumes defined in the storage system exceeds 1,024 volumes,which is the maximum number of volumes that can be displayed on one page. It remainsdimmed when the total number of volumes defined in the storage system is less than 1,024volumes.

• The T-VOL List displays the following information related to T-VOLs:Volume: The ID (LDKC:CU:LDEV) of the T-VOL.◦

◦ Emulation: The emulation type of the T-VOL.

◦ Capacity(Cyl): The capacity of the T-VOL (the number of cylinders).

◦ CLPR: The cache logical partition (CLPR) of the T-VOL.

• The Set button adds the information for the pair you intend to split to the Split Volume PairVolume List.

• The Change button replaces the T-VOL of the selected pair displayed in the Split Volume PairVolume List with the selected T-VOL.

• The OK button adds the operation (setting) to split the pair composed of the S-VOL and T-VOLyou selected in the Split Volume Pair dialog box to the Preview List in the Pair Operationwindow.To apply all the new pair operation settings displayed in the Preview List to the storage system,click Apply in the Pair Operation window.

• The Cancel button cancels the operations set in the Split Volume Pair dialog box and closesthe dialog box.


Performing Only Pair Splitting

CAUTION: If you want the T-VOLs you are intending to split to be identical to the S-VOLs, stopall write operations to the S-VOLs before splitting the pairs. This ensures that there are no updatesto the S-VOLs while the split operations are synchronizing the T-VOLs to the S-VOLs.

The S-VOL and T-VOL are synchronized only when the pair status changes from SP-Pend or V-Splitto Split. Due to the SIz asynchronous update copy operations, this status transition can take severalminutes.To split one or more existing SIz pairs:1. Go to the Pair Operation window, and select the desired CU image or S-VOL in the Tree to

filter the volumes displayed in the Volume List.2. Select and right-click the pairs you want to split (other than the suspended pairs) to display

the menu, and then select the Split Pair command to open the Split Volume Pair dialog box.3. On the Split Volume Pair dialog box, select from the Copy Pace list, the copy pace for all pairs

being split.The copy pace is set for all pairs being split. If you change the setting, the last setting willbecome effective.

4. Select from the Select Split Type list, the split type for all pairs being split.The split type is set for all pairs being split. If you change the setting, the latest setting is appliedto all pairs.

5. When the Split Volume Pair dialog box displays the desired pairs, click OK to reflect all pairsto the Preview List in the Pair Operation window.Use the Delete command selected from the menu (that will be displayed by right-clicking) toremove any pairs from the Split Volume Pair Volume List.

6. In the Pair Operation window, click Apply to apply the Split Volume Pair operations set in theSplit Volume Pair dialog box to the storage system.When the Split Volume Pair operations start, the Pair Operation window shows the new pairswith SP-Pend or V-Split status and the progress (%) of the update copy operations. The Splitstatus displays immediately if there were no pending update copy operations.

Performing Pair Addition and Pair SplittingThe Split Volume Pair dialog box can also be used to simultaneously add and split new SIz pairs.

CAUTION: If you want the T-VOLs, you are intending the split to be identical to the S-VOLs, stopall write operations to the S-VOLs before splitting the pairs. This ensures that there are no updatesto the S-VOLs while the split operations are synchronizing the T-VOLs to the S-VOLs.

The S-VOL and T-VOL are synchronized only when the pair status changes from SP-Pend or V-Splitto Split. Due to the SIz asynchronous update copy operations, this status transition can take severalminutes.To simultaneously add and split one or more new SIz pairs:1. Go to the Pair Operation window, and select the desired CU image or S-VOL in the Tree to

filter the pairs displayed in the Volume List.2. Select the Simplex volumes that will be the S-VOLs of the new pairs to be added and split,

right-click the selected S-VOLs to display the menu, and then select the Split Pair command toopen the Split Volume Pair dialog box.

3. On the Split Volume Pair dialog box, select the copy pace from the Copy Pace list.4. Select the split type for all pairs being added and split from the Select Split Type list.5. Specify the T-VOLs you want to pair up with each S-VOL by following the steps below:

Splitting Pairs 77

a. From the Split Volume Pair Volume List, select the desired S-VOL.b. From the LDKC list, select the desired LDKC, and from the CU list, select the desired CU

image.c. Select the Reserved check box to make the reserved volumes appear on the T-VOL List.

Reserved volumes are displayed on the T-VOL List.

d. From the T-VOL List, select the desired T-VOL.You can also select the T-VOL from unreserved volumes, because once you select anunreserved volume, the storage system will automatically set its reserve attribute and makeit a reserved volume.

e. Click Set.The T-VOL will be displayed below the selected S-VOL in the Split Volume Pair VolumeList.

f. To add and split another T-VOL to and from the same S-VOL, repeat steps b through e.Each pair to be added and split will be displayed separately in the Volume List.

6. Repeat step 5 until the desired pairs display.Use the Change button to replace T-VOLs, the Set button to add T-VOLs, and the Deletecommand in the menu to remove pairs from the Split Volume Pair Volume List.

7. Click OK to reflect the settings in the Split Volume Pair dialog box to the Preview List in thePair Operation window.

8. In the Pair Operation window, click Apply to apply the operation settings in the Preview Listto the storage system.The pairs will then be created and split according to the operations set in the Split VolumePair dialog box. When the add & split operations start, the Pair Operation window will showthe new pairs with SP-Pend or V-Split status and the progress (%) of the ongoing update copyoperations. The Split status displays immediately if there were no pending update copyoperations.

Performing At-Time Split Operation (Multiple Pair Splitting)By using XP for Business Continuity Manager Software™, you can split the multiple SIz pairs in thesame CTG at once. For details on adding, deleting, and viewing the SIz CTGs, see “ConfiguringCTGs” (page 68). “ShadowImage for Mainframe Pair Status” (page 22) lists the SIz CTGsrestrictions:

Table 31 Specifications of CTGs

DescriptionsItems

A number (0−127) is assigned to each CTG. You can specify a CTG numberwhen you create SIz pairs. You can view the ID of the CTGs used as the pairunit via the CTG window or by using a mainframe host.You can configure up to 128 CTGs in a storage system, including ShadowImagefor Mainframe CTGs and XP Snapshot CTGs.

CTG number

You can define up to 8,192 SIz pairs in a CTG. Note that SIz pairs,ShadowImage for Mainframe pairs, and XP Snapshot pairs cannot co-exist inthe same CTG.

Number of pairs

This section describes the overview procedure of splitting pairs by At-Time Split, using XP forBusiness Continuity Manager Software™. For detailed instructions on using XP for Business ContinuityManager Software™, see the HP StorageWorks XP for Business Continuity Manager SoftwareMessages.


1. Define the SIz pairs in the same CTG.2. Specify the CTG as the copy group of the XP for Business Continuity Manager Software™, or

register the split time.3. When you specify the copy group, select the split type; Quick Split or Steady Split.

When you register the split time, the split type will be Quick Split.

4. Perform the pair create operation.5. Perform the pair split operation on the SIz pairs that are created for At-Time Split function.

The At-Time Split option is enabled, and data in all S-VOLs in the same CTG is created in thecorresponding T-VOLs at the time when the pairsplit request is received by the storage system.

CAUTION: On executing the At-Time Split function:• Change the status of pairs in the same CTG according to the copy group.

• If you are going to execute the At-Time Split function successively, before you execute thefunction for the second time, verify that status of all the pairs in the same CTG is changed tothe status which is specified by the YKEWAIT command. For detailed information about theYKEWAIT command, see the HP StorageWorks XP for Business Continuity Manager SoftwareMessages.

If you do not follow the above mentioned caution, the data in the S-VOL when the Split operationis performed by the At-Time Split function may not be copied to the T-VOL.On registering the split time:

• For the pairs in the CTG to which you registered the Split time, you can only perform SuspendPair operations or Delete Pair operations. If you perform Add Pair, Split or Pair Resyncoperation, registration of the Split time will be rejected. To perform Add Pair, Split or PairResync operation, you must first reset the registration of the Split time.

• The specified Split time will be reset by switching off the power supply.

• If the Split time is registered, the Split operation is performed at the time of reception of theread/write request with a time stamp that has passed the time specified as the Split time. TheSplit operation may be delayed in case no read/write request is issued and the Split operation,as a result, is performed as a result of timeout of the storage system timer.

• If the Split time is registered, and if there is a pair in the CTG that cannot be split completelyduring the Split operation, the status of this pair will remain the same as before the Splitoperation.

Using PPRC Commands to Split, Resynchronize, and Delete Pairs in a CTGBy using a PPRC command, you can split, resynchronize, and delete all SIz pairs in the same CTGat once. For specifications of CTGs, see “Performing At-Time Split Operation (Multiple Pair Splitting)”(page 78). For details on how to set, reset, and reference CTGs, see “Configuring CTGs” (page 68).The following explains how to use PPRC commands to manipulate CTGs:

• Preparation for CTGStart up ShadowImage for Mainframe from Remote Web Console, and reserve a CTG.1.

2. Create SIz pairs by using the PPRC CESTPAIR command or the ICKDSF PPRCOPY ESTPAIRcommand.

3. In the CTG dialog box, make sure that SIz pairs have been made in the correct CTG.

• To split all pairs in the same CTG

Using PPRC Commands to Split, Resynchronize, and Delete Pairs in a CTG 79

Execute the PPRC CSUSPEND command or the ICKDSF PPRCOPY SUSPEND command.If you perform the CSUSPEND or PPRCOPY SUSPEND command on a pair in a CTG, thecommand effects all pairs in the CTG. If you perform the command on a pair which hasalready been split, no errors will occur.

1.

2. Make sure that the pair status is Split by using the CQUERY or the PPRCOPY QUERYcommand.

3. Hosts can access the data in the SIz T-VOLs.

• To resynchronize pairs in the same CTGResynchronize SIz pairs by using the PPRC CESTPAIR command or the ICKDSF PPRCOPYESTPAIR command.If you perform the CESTPAIR or PPRCOPY ESTPAIR command on a pair in a CTG, thecommand will effect all pairs in the CTG.

1.

If you perform the command on a pair which has not been split, no errors will occur.

2. Use the CQUERY command or the PPRCOPY QUERY command to make sure that thepair status is Pending or Duplex.

• To delete pairs in the same CTGDelete SIz pairs by using the PPRC CDELPAIR command or the ICKDSF PPRCOPY DELPAIRcommand.If you perform the CDELPAIR or PPRCOPY DELPAIR command on a pair in a CTG, thecommand will effect all pairs in the CTG.

1.

2. Use the CQUERY command or the PPRCOPY QUERY command to make sure that thepair status is Simplex.

Suspending PairsThe Suspend Volume Pair dialog box (see Figure 34 (page 80)) allows you to suspend the pairs.

Figure 34 Suspend Volume Pair Dialog Box


The Suspend Volume Pair dialog box consists of the following components.

• Suspend Volume Pair Volume ListThe Volume List located on the upper side of the Suspend Volume Pair panel displays thefollowing information pertaining to the S-VOL and T-VOL of the pair you want to suspend:

◦ S-VOL: The LDKC:CU:LDEV of the S-VOL.An LDEV number that ends with a pound or get symbol (#) indicates that the LDEV is anexternal volume (for example, 00:00:01#). For details regarding the external volumes,see the HP StorageWorks XP24000/XP20000 External Storage Software User's Guide.

◦ Status: The pair status displays.






• The OK button adds the operation settings to suspend the selected pairs displayed in theSuspend Volume Pair Volume List to the Preview List in the Pair Operation window.You must click Apply in the Pair Operation window to apply the Suspend Volume Pair operationsettings displayed in the Preview List to the storage system.

• The Cancel button cancels the operations set in the Suspend Volume Pair dialog box and closesthe dialog box.

To suspend one or more SIz pairs:1. Go to the Pair Operation window, and select the desired CU image or S-VOL in the Tree to

filter the volumes displayed in the Volume List.2. Select the pairs that you want to suspend (or the volumes whose pairs you want to suspend),

right-click the selected pairs to display the menu, and then select the Suspend Pair commandto open the Suspend Volume Pair dialog box.

3. On the Suspend Volume Pair dialog box, select the pairs you want to suspend, and click OKto reflect the settings to the Preview List in the Pair Operation window.To remove pairs from the list, select the unnecessary SIz pairs, right-click while selecting thepairs, and then select the Delete command from the menu that will be displayed by right-clicking.

4. Repeat steps 2 and 3 to suspend additional pairs in the Suspend Volume Pair Volume List.5. In the Pair Operation window, click Apply to suspend the specified pairs.

The Pair Operation window will then display the results of the suspend operations (for example,pair status changed to Suspend).

Resynchronizing PairsThe Resynchronize Volume Pair dialog box (see Figure 35 (page 82)) allows you to resynchronizethe pairs in Split, V-Split, or Suspend status.

Resynchronizing Pairs 81

Figure 35 Resynchronize Volume Pair Dialog Box

The Resynchronize Volume Pair dialog box consists of the following components.

• Resynchronize Volume Pair Volume ListThe Volume List located on the upper side of the Resynchronize Volume Pair dialog box displaysthe following information pertaining to the S-VOL and T-VOL of the pair you want toresynchronize:








• The Resync Type list allows you to select the resync type for the pairs being resynchronized(from Normal Copy(S->T), Quick Resync(S->T), Reverse Copy(T->S), or Quick Restore(T->S)).Before selecting Reverse Copy(T->S) or Quick Restore(T->S), make sure that the selected pairmeets the requirements listed in Table 32 (page 83).


Table 32 Requirements for Selecting Reverse Copy(T->S) or Quick Restore(T->S)

RequirementsParameter

The specified pair must be in the split state. All other pairs that share thesame S-VOL as the specified pair must also be in the split or suspendedstate.

Pair status

You cannot perform the quick restore pairresync command on a pair thatconsists of VLL and normal volumes.The specified pair must not be an HP StorageWorks XP for Data ExchangeSoftware volume pair.

Pair type

If the SIz and TCz pairs share the same volume (S-VOL = M-VOL,T-VOL = M-VOL, or S-VOL = R-VOL), and the TCz pair is not in the suspendstatus, the reverse copy and quick restore operations cannot be performed.When the shared SIz/TCz volume is paired with an external volume, thequick restore pairresync operation cannot be performed.

Shared SIz/TCz volume.

If the SIz and URz pairs share the same volume, and the URz pair is not inthe suspend status, the reverse copy and quick restore operations cannotbe performed.When the shared SIz/URz volume is paired with an external volume, thequick restore pairresync operation cannot be performed.

Shared SIz/URz volume.

During the reverse copy or quick restore operation, a TCz pair and/or a URz pair cannot becreated. The TCz add pair command and URz add pair command will be rejected when theSIz pair status is resync-r.

• The Copy Pace list allows you to select the copy pace (from Slower, Medium, or Faster) forall the pairs that you are re-synchronizing.Slower minimizes the impact of SIz operations on storage system I/O performance. Fasterquickly completes the copy operation, but it may affect the storage system I/O performance.

• The OK button adds the operation setting displayed in the Resynchronize Volume Pair VolumeList for re-synchronizing the specified pairs to the Preview List in the Pair Operation window.Click Apply in the Pair Operation window to start the Resync Pair operation for the specifiedpairs.

• The Cancel button cancels the operations set in the Resynchronize Volume Pair dialog boxand closes the dialog box.

To resynchronize one or more SIz pairs that have been split or suspended:1. From the host, set the split T-VOLs offline before starting the Resync Pair operation.

When the Resync Pair operation starts, the storage system will stop accepting write I/Os tothe T-VOL.


3. Select the pairs in Split, V-Split, or Suspend status, right-click the selected pairs to display themenu, and then select the Resync Pair command to open the Resynchronize Volume Pair dialogbox.

4. On the Resynchronize Volume Pair dialog box, select the pairs you want to resynchronize.To remove the pairs in the Resynchronize Volume Pair Volume List, select and right-click thepair, and then select the Delete command in the menu.

5. Select the desired copy pace from the Copy Pace list.

Resynchronizing Pairs 83

6. Select the resync type for each pair from the Resync Type list.

WARNING! Make sure to select the correct resync direction.

CAUTION:• If you do not want to resynchronize the S-VOL and T-VOL after the quick restore operation,

you must set the Swap&Freeze option before performing the quick restore operation (see“Swap&Freeze Option” (page 25) and “Setting Options” (page 68)).

• If the reverse copy or quick restore operation is performed on one SIz pair in a 1-to-nconfiguration (n>1), the S-VOL and the other T-VOLs are no longer synchronized.

Reverse and quick restore operations cannot be performed on pairs in the V-Split or Suspendedstatus.When a quick restore operation is in progress, the Remote Web Console window may displayold configuration information on components such as volumes. The window may displayconfigurations before the quick operation is performed. To update configuration informationin the Remote Web Console window, wait until the quick restore operation completes andthen click File and then Refresh on the menu bar of the window.

7. Click OK to reflect the settings to the Preview List in the Pair Operation window.If you try to perform the quick restore operation to the pair you select from the ResynchronizeVolume Pair Volume List that is composed of volumes stored in multiple cache logical partitions(CLPRs), a message asking you whether you want to click OK and continue the operation willappear. Click OK if you do, or click Cancel to discontinue the quick restore operation.

8. Repeat steps 6 through 7 until the Preview List in the Pair Operation window displays thedesired pairs (settings).

9. Confirm that the T-VOLs are offline before starting resync operations.10. In the Pair Operation window, click Apply to resynchronize the specified pairs.

The Pair Operation window will then display the results of the Resync Pair operations (forexample, pair status changed to resync or resync-R, and then to duplex) and the progress (%)of the update copy operation. The pair status will change to duplex right away, if the updatecopy operation is not necessary.

CAUTION:• When reverse or quick restore resync operation ends abnormally, or, Suspend pair is requested

during reverse copy or quick restore, the pair status changes to suspended. The S-VOL of thesuspended pair is read/write-enabled for all hosts; however, the data on the S-VOL is notguaranteed. The T-VOL of the suspended pair remains read/write-disabled.

• Even when reverse or quick restore resync operation ends abnormally, or, Suspend pair isrequested during reverse copy or quick restore, the status of other SIz pairs which share thesame S-VOL does not change.

• After an SIz reverse copy or quick restore operation is performed, make sure that the pairstatus changes to duplex before performing a TCz resume pair operation. If you perform theTCz resume pair operation before the pair status changes to duplex, the command (resumepair operation) will be rejected.

Deleting PairsThe Delete Volume Pair dialog box (see Figure 36 (page 85)) allows you to delete the pairs. Notethat the deleting pair is an operation to stop copying data into the T-VOL of an SIz pair, and setthe status of the S-VOL and T-VOL back to Simplex.


Figure 36 Delete Pair Dialog Box

The Delete Pair dialog box consists of the following components.

• Delete Pair Volume ListThe Volume List located on the upper side of the Delete Pair dialog box displays the followinginformation pertaining to the S-VOL and T-VOL of the pair you want to delete:

◦ S-VOL: The LDKC:CU:LDEV of the S-VOL.An LDEV number that ends with a pound or gate symbol (#) indicates that the LDEV isan external volume (for example, 00:00:01#). For details regarding the external volumes,see the HP StorageWorks XP24000/XP20000 External Storage Software User's Guide.


◦ T-VOL: The LDKC:CU:LDEV of the T-VOL.An LDEV number that ends with a pound or gate symbol (#) indicates that the LDEV isan external volume (for example, 00:00:01#). For details regarding the external volumes,see the HP StorageWorks XP24000/XP20000 External Storage Software User's Guide.





• The OK button adds the operation settings to delete the selected pairs displayed in the DeleteVolume Pair Volume List to the Preview List in the Pair Operation window.Click Apply in the Pair Operation window to apply the Delete Volume Pair operation settingsdisplayed in the Preview List to the storage system.

• The Cancel button cancels the operations set in the Delete Pair dialog box and closes thedialog box.

To delete one or more SIz pairs, follow the procedure below:1. To synchronize the S-VOL and T-VOL before deleting the pair:

a. Wait until all write I/Os from the host to the S-VOL are complete.b. Set the S-VOL offline from the host to prevent the S-VOL from being updated during or

after the Delete Volume Pair operation.c. After the S-VOL is offline, suspend the pair to copy all pending updates to the T-VOL.

When the pair status changes to Split, the S-VOL and T-VOL are synchronized.


Deleting Pairs 85

3. Select the pairs that you want to delete (or the volumes whose pairs you want to delete),right-click while selecting the pairs, and then select the Delete Pair command from the menuthat appears by right-clicking.The Delete Pair dialog box will be displayed.

4. On the Delete Pair dialog box, select the pairs you want to delete, and click OK to reflect thesettings to the Preview List in the Pair Operation window.To remove a pair in the Delete Volume Pair Volume List, select and right-click the pair youwant to delete, and then select the Delete command in the menu.

5. In the Pair Operation window, click Apply to delete the specified pairs or volumes.The operation settings displayed in the Delete Pair dialog box will be applied to the systemand the Pair Operation window will display the results of the Delete Pair operations.

Viewing Detailed Volume and Pair InformationThe Detail dialog box (see Figure 37 (page 86)) displays information for the selected volume orpair.To display the Detail dialog box:1. Select a volume or an SIz pair from the Volume List of the Pair Operation window.2. Right-click the selected volume or pair.


3. Select the Detail command from the menu.The Detail dialog box displays.

If the S-VOL of the selected pair has two or three T-VOLs that share the same S-VOL, all T-VOLs aredisplayed on the Detail dialog box.

Figure 37 Detail Dialog Box


The Detail box in the Detail dialog box has the following features:

• The S-VOL Information displays the following information:Volume ID: The information for the S-VOL display in XX:YY:ZZ (LDKC number: CU number:LDEV number) format.An LDEV number that ends with a pound or gate symbol (#) indicates that the LDEV isan external volume (for example, 00:00:01#). For details regarding the external volumes,see the HP StorageWorks XP24000/XP20000 External Storage Software User's Guide.

◦

◦ CLPR: The cache logical partition of the S-VOL displays.

• The Volume Information displays the following information:Emulation : The emulation type of the volume displays.◦

◦ Capacity(Cyl): The volume capacity in cylinders is displays.

• The Pair Information box displays the following information:S-VOL: The S-VOL information displays in XX:YY:ZZ (LDKC number: CU number: LDEVnumber) format.

◦

◦ T-VOL: The T-VOL information displays in XX:YY:ZZ (LDKC number: CU number: LDEVnumber) format.

◦ Status: The status of the pair displays. For detailed information about the pair status, see“ShadowImage for Mainframe Pair Status” (page 22).

◦ Sync.: The rate of synchronization of the S-VOL and the T-VOL.

◦ CTG: The CTG ID displays when the pair is registered to the CTG. If the pair is notregistered in the CTG, dashes--- are displayed.

◦ CLPR(S): The information for the CLPR where the S-VOL belongs displays in AA:BBB (CLPRnumber: CLPR name) format.

◦ CLPR(T): The information for the CLPR where the T-VOL belongs displays in AA:BBB (CLPRnumber: CLPR name) format.

• Refresh the window after this dialog box is closed. check box: If you select the check box, theinformation displayed in the Pair Operation window will be updated after the Detail dialogbox closes. If you do not select the check box, the information in the Pair Operation windowwill be the same before and after you close the Detail dialog box.

• The Refresh button updates the setting to the latest information displayed on the Detail dialogbox.

• The Close button closes the Detail dialog box.

Viewing the Number of Pairs and License InformationThe Information dialog box displays information such as the number of pairs in the storage system,the number of reserved volumes, and the license capacity.To display the Information dialog box:1. Right-click anywhere on the volume list of the Pair Operation window.


2. Click the Information command in the menu.The Information dialog box appears.

Viewing the Number of Pairs and License Information 87

Figure 38 Information Dialog Box

The following information displays in the Information dialog box:

• ShadowImage for Mainframe pair(s)The number of SIz pairs displays in the format of XXXX / YYYY. XXXX indicates the numberof SIz pairs, and YYYY indicates the total number of SIz pair tables, and ShadowImage forMainframe pair tables.The maximum number of pairs that can be created in one storage system is 16,384, includingmigration plans and relationships. Therefore, if XP pairs, migration plans of XP Auto LUN,and relationships of FlashCopy Mirroring and FlashCopy Mirroring V2 are created in thesame storage system, the maximum number of pairs that you can create may be less than16,384 minus YYYY.When the volume size is large, ShadowImage for Mainframe uses multiple pair tables perone pair. Therefore, sometimes you cannot create 16,384 pairs. For information about thenumber of pairs and the pair tables, see “Calculating Maximum Number of Pairs” (page 43).

• FC Relationship(s)The number of FlashCopy Mirroring relationships display.

• FCv2 Relationship(s)The number of FlashCopy Mirroring V2 relationships display.

• Reserved volume(s)The number of reserved volumes of ShadowImage for Mainframe display in the format ofXXXX / YYYY. XXXX indicates the number of reserved volumes of ShadowImage for Mainframe,


YYYY indicates the total number of reserved volumes of ShadowImage for Mainframe and XPBusiness Copy.Reserved volumes include T-VOLs of ShadowImage for Mainframe and XP Business Copypairs.

• Remaining pair table(s)The number of remaining pair tables in the storage system displays on the left side of the slash(/). The total number of pair tables in the storage system is displayed on the right side of theslash (/). For information about the total number of pair tables in the storage system, see“Calculating Maximum Number of Pairs” (page 43).

• Remaining differential table(s)The number of remaining differential tables in the storage system displays on the left side ofthe slash (/). The total number of differential tables in the storage system displays on the rightside of the slash (/). For information about the total number of differential tables in the storagesystem, see “Calculating Maximum Number of Pairs” (page 43).

• Used volume (TB)License information for ShadowImage for Mainframe will be indicated in the format of X(Y).X indicates license capacity used by ShadowImage for Mainframe, and Y indicates totallicense capacity reserved for ShadowImage for Mainframe. Unlimited displays when there isno limited license capacity for ShadowImage for Mainframe.

• FC Used volume (TB)License information for FlashCopy Mirroring displays. For details, see the HP StorageWorksXP24000/XP20000 for FlashCopy Mirroring Software User's Guide.

• Close buttonCloses the Information dialog box.

Viewing Pair Operations HistoryThe History window (“History Window” (page 58)) displays history of SIz operations.To see the history:1. Display the History window.

• If you are already displaying the other window shown by a tab, click the History tab.For information about how to display the History window by starting Remote Web Console,see “Starting ShadowImage for Mainframe” (page 51).

• If some of the pairs include LUSE volumes, or if the total number of the following pairsand migration plans is 500 or more in the storage system, you may need to wait for awhile until the History window displays operation history.◦ ShadowImage for Mainframe pairs

◦ FlashCopy Mirroring relationships

◦ FlashCopy Mirroring V2 relationships

◦ XP Business Copy pairs

◦ XP Snapshot pairs

◦ Migration plans of XP Auto LUN

2. See the ShadowImage for Mainframe (R) History list in the upper area of the History window.

Viewing Pair Operations History 89

3. To change the displaying order, click a column title in the list.The list will be sorted based on the items in the clicked column.

• If there are more than 16,384 records of operations, the list will be divided into multiplepages and only the list which is currently displayed will be sorted.

• If you click the same column title again, you can switch the sorting order (Ascending orDescending).

4. If the information on the list is not updated, click File, and then Refresh on the menu bar ofthe Remote Web Console main window. The list will be updated to the latest information.For operations involving the copying process, the History window does not display informationabout the operations until the copying process starts. If you perform an operation on a pairbefore the copying process starts, the History window will not display information about theoperation.If there are many records of operations, click the scroll button.

5. The list will scroll and you will be able to see the operation history that has not been displayed.If you click and drag down the frame border which divides the History window into upperand lower panes, you can expand the display area of the list.

6. If there are more than 16,384 records of operations, click Next.The list displays subsequent records of operations.

• If you click Previous, the list switches to the previous page.

• If there are 16,384 or fewer records of operations, you cannot click Previous and Next.

• The storage system saves up to 524,288 records of latest operations.


7 Performing ShadowImage for Mainframe Pair OperationsUsing XP for Business Continuity Manager Software

This chapter provides a brief description for using XP for Business Continuity Manager Software™to perform ShadowImage for Mainframe pair operations.

• “Command Device for XP for Business Continuity Manager Software” (page 91)

• “XP for Business Continuity Manager Software CLI Commands that Correspond to the PPRCCommands” (page 91)

XP for Business Continuity Manager Software ™and PPRC can both be used to perform the sameSIz pair operations. However, since the XP for Business Continuity Manager Software™ and PPRCare independent functions, do not use them in combination to perform the SIz pair operations.

Command Device for XP for Business Continuity Manager SoftwareShadowImage for Mainframe supports XP for Business Continuity Manager Software ™CLIcommands to enable you to perform XP Business Copy pair operations and view XP Business Copypair status. For detailed information on using XP for Business Continuity Manager Software™features, see the user documentation for XP for Business Continuity Manager Software.

To use XP for Business Continuity Manager Software ™CLI commands, you need to assign a volumeas the command device for the XP for Business Continuity Manager Software™ separately fromthe command device used for the open system. The volume used as the command device for theXP for Business Continuity Manager Software ™can only be assigned by employing relevant XPfor Business Continuity Manager Software features. For further information about the commanddevice, see the HP StorageWorks XP for Business Continuity Manager Software User's Guide.

XP for Business Continuity Manager Software CLI Commands thatCorrespond to the PPRC Commands

Table 33 (page 92) lists the XP for Business Continuity Manager Software™ CLI commands thatcorrespond to the PPRC commands that can be used to perform the SIz pair operations.For further information on the PPRC commands, see “Performing ShadowImage for Mainframe PairOperations Using PPRC” (page 93). For further information about the XP for Business ContinuityManager Software™, see the HP StorageWorks XP for Business Continuity Manager SoftwareUser's Guide.

Command Device for XP for Business Continuity Manager Software 91

Table 33 XP for Business Continuity Manager Software CLI Commands Corresponding to the PPRCCommands

Support Method(parameter/config)

XP for Business ContinuityManager SoftwareCommands

ParameterPPRC Commands

configYKMAKE/ YKRESYNCDEVNCESTPAIR

configPRIM

configSEC

The command used for addpair operation differs fromthe one used for resync pairoperation.

MODE

config (CopyPace)PACE

Not supportedMSGREQ

Not supportedONLINSEC

configYKSUSPNDDEVNCSUSPEND

configPRIM

configSEC

Not supportedQUIESCE

configYKDELETEDEVNCDELPAIR

configPRIM

configSEC

configYKQUERYDEVNCQUERY

92 Performing ShadowImage for Mainframe Pair Operations Using XP for Business Continuity Manager Software

8 Performing ShadowImage for Mainframe Pair OperationsUsing PPRC

This chapter provides instructions for performing ShadowImage for Mainframe operations issuingTSO PPRC and ICKDSF PPRCOPY commands to the HP disk array from the mainframe host.

• “PPRC Command Support” (page 93)

• “PPRC Command Requirements” (page 94)

• “PSF and DEVSERV Commands” (page 94)

• “Adding Pairs Using PPRC Commands” (page 95)

• “Splitting Pairs Using PPRC Commands” (page 98)

• “Resynchronizing Pairs Using PPRC Commands” (page 100)

• “Deleting Pairs Using PPRC Commands” (page 103)

• “Displaying Pair Status Using PPRC Commands” (page 105)This document does not provide complete instructions for using the PPRC commands. For detailedinformation on using the PPRC TSO and ICKDSF commands, see the IBM user documents.This document refers to the TSO PPRC command and ICKDSF PPRCOPY command as the PPRCcommand.

PPRC Command SupportTable 34 (page 93) lists and describes the PPRC commands supported by ShadowImage forMainframe.

Table 34 PPRC Commands Available for SIz

Specified VolumeFunctionICKDSF CommandTSO Command

Simplex volume that to bethe S-VOL.

Adds a pair, starts initialcopy operation, andchanges status to duplex.

PPRCOPY ESTPAIRCESTPAIR

Simplex volume that to bethe S-VOL.

Adds and simultaneouslysplits a pair.


Duplex or pending S-VOL.Splits a pair, starts quicksplit operation.

PPRCOPY SUSPENDCSUSPEND

Duplex or pending S-VOL.Splits a pair, starts steadysplit operation.

PPRCOPY SUSPENDCSUSPEND

Split, V-split or suspendedS-VOL.

Resynchronizes a pair, startsnormal resync.


Split, V-split or suspendedS-VOL.

Resynchronizes a pair, startsquick resync.


Split S-VOL.Resynchronizes a pair, startsreverse copy.


Split S-VOL.Resynchronizes a pair, startsquick restore.


Other than simplex S-VOL.Deletes a pair, changesstatus to simplex.

PPRCOPY DELPAIRCDELPAIR

Any volume status is OK.Displays detailed pair statusinformation.

PPRCOPY QUERYCQUERY

PPRC Command Support 93

• You cannot set or reset the reserve attribute by using the PPRC commands. To set or reset thereserve attribute, use the Remote Web Console computer.

• The ShadowImage for Mainframe suspend operations cannot be requested using the PPRCcommands. The CSUSPEND/PPRCOPY SUSPEND commands execute split operations onShadowImage for Mainframe pairs. Use the Remote Web Console computer to suspend SIzpairs.

• If you issue the ESTPAIR or the SUSPEND command to a Pending volume, the command willabnormally end by reporting CC = 12.

• CRECOVER command is not supported by ShadowImage for Mainframe. When you try toexecute the CRECOVER command on the SIz S-VOL, the command ends normally and the SIzpair will be deleted. If you execute the command on the SIz T-VOL, the command will berejected and end abnormally by reporting CC = 8.

• CGROUP command is not used for ShadowImage for Mainframe. For information on theCGROUP command, see the HP StorageWorks XP24000/XP20000 Continuous AccessSoftware User's Guide.

• PPRCOPY RECOVER command is not supported by ShadowImage for Mainframe. When youtry to execute the PPRCOPY RECOVER command on the SIz S-VOL, the command ends normallyand the SIz pair will be deleted. If you execute the command on the SIz T-VOL, the commandwill be rejected and end abnormally by reporting CC = 8.

PPRC Command RequirementsTo perform the PPRC commands on SIz pairs, all of the following conditions must be met. Sinceboth ShadowImage for Mainframe and TrueCopy for Mainframe support the PPRC commands, ifany of these conditions is not met, the PPRC command will be executed by TrueCopy for Mainframeagainst TCz pairs.

• The ShadowImage for Mainframe feature and software must be installed and enabled on theXP storage system.

• The serial numbers of the S-VOL and the T-VOL must be defined according to either of thefollowing:◦ Enter the same serial number for both S-VOL and T-VOL.

◦ Enter an additional parameter instead of the serial number for the S-VOL, and enter theserial number for the T-VOL.

PSF and DEVSERV CommandsThe perform storage system function (PSF) commands key the XP storage system to accept commandsand requests from the user. Table 35 (page 94) describes the operability of the PSF commands onSIz volumes.

Table 35 PSF Command Operability for ShadowImage for Mainframe Volumes

Operability for ShadowImage for MainframeItem

See Table 36 (page 95).Device pair status.

Not available for ShadowImage for Mainframe, becausethe SIz differential bitmap format is different than the TCzdifferential bitmap format.

Percent completion of the copy operation.

Displays information for the pair having the T-VOL with thelowest LDEV ID.

S-VOL with 2 or more T-VOLs.

94 Performing ShadowImage for Mainframe Pair Operations Using PPRC

Table 35 PSF Command Operability for ShadowImage for Mainframe Volumes (continued)

Operability for ShadowImage for MainframeItem

Active.Path status.

If the volume does not also belong to a TCz pair, 1 isdisplayed with TCz info.

Path number.

Table 36 (page 95) describes the PSF Read Subsystem Data and DEVSERV Sense Subsystem Statusresults for SIz volumes.

Table 36 PSF and DEVSERV Results for ShadowImage for Mainframe Volumes

DEVSERV Sense Subsystem StatusPSF Read Subsystem DataPair Status

T-VOLS-VOLT-VOLS-VOL

PSEC-PNDGPPRI-PNDGPSEC-PNDGPPRI-PNDGPending

PSECONDRYPPRIMARYPSECONDRYPPRIMARYDuplex

PSEC-PNDGPPRI-PNDGPSEC-PNDGPPRI-PNDGSP-Pend

SIMPLEXPPRI-SUSPPSEC-SUSPPPRI-SUSPV-Split

SIMPLEXPPRI-SUSPPSEC-SUSPPPRI-SUSPSplit

PSEC-SUSPPPRI-SUSPPSEC-SUSPPPRI-SUSPSuspend

PSEC-PNDGPPRI-PNDGPSEC-PNDGPPRI-PNDGResync

NOTE: PPRIMARY and PSECONDRY indicate that the volume is in the duplex state.

Figure 39 (page 95) shows an example of the DEVSERV command.

Figure 39 DEVSERV Command97244 13:04:37.39 DS P,DE80,197244 13:04:38.57 IEE459I 13.04.37 DEVSERV PATHS 692 692 UNIT DTYPE M CNT VOLSER CHPID=PATH STATUS 692 RTYPE SSID CFW TC DFW PIN DC-STATE CCA DCA 692 DE80,33903 ,0,000,DKDE80,54=+ 1C=+ D4=+ 9C=+ 692 0080 Y YY. YY. N PPRIMARY 00 00

Adding Pairs Using PPRC CommandsThe CESTPAIR and PPRCOPY ESTPAIR commands are equivalent to the SIz add pair operation.The CESTPAIR and PPRCOPY ESTPAIR commands must be issued to the S-VOL of the pair beingcreated, and the T-VOL must be offline to the host before these commands are issued.This section describes the parameters and examples of the CESTPAIR and the PPRCOPY ESTPAIRcommand.

CESTPAIR (Adding Pairs)Table 37 (page 96) lists and describes the CESTPAIR command parameters that can be used whenyou create SIz pairs.

Adding Pairs Using PPRC Commands 95

Table 37 CESTPAIR Command Parameters (Adding Pairs)

DescriptionValueParameter

Device number.DEVN

If you set a parameter other than theparameters on the left, the command will berejected.

Primary volume (S-VOL): SSID, serial number,channel connection address, and CU number.1

You must set MSF00 instead of a serial numberto request the Add and Split operation. Thisparameter is valid for MODE(COPY) orMODE(NOCOPY) only.You must set MAnn0 instead of a serial numberif you create SIz pairs in a CTG with ID nn.

PRIM

Secondary volume (T-VOL): SSID, serialnumber, channel connection address, and CUnumber.1

SEC

When you perform CESTPAIR command onSIz, no matter whether you specify COPY orNOCOPY for the MODE parameter, thestorage system recognizes it as COPY mode.Therefore, initial full-volume copy will beperformed.

COPYMODE

NOCOPY

Copy speed will be slow, except when the DKCemulation type is 2105 or 2107. When theDKC emulation type is 2105 or 2107, thecopy speed is always medium regardless whatyou specify for the PACE parameter.

1PACE

Copy speed will be medium.other than 1

SIz does not use this parameter. SIz ignores it.Not applicable.CRIT

MSGREQ function is applicable.Note that you cannot use the MSGREQ functionwhen the Add and Split operation is required.If you specify YES for this parameter when theAdd and Split operation is required, thecommand will be rejected and end abnormallyby reporting CC = 8.

YESMSGREQ

MSGREQ function is not applicable.NO

Pair create operation will be performedwhether the T-VOL is online or not.

YESONLINSEC2, 3

Pair create operation will not be performed ifthe T-VOL is online.

NO

1 CU number is valid only for the DKC emulation type 2105 or 2107.2 When you do not specify the parameter, the result is same as when you specify NO for this parameter.3 The ONLINSEC parameter is valid only for the DKC emulation type 2105 or 2107.

If you specify NOCOPY for the MODE parameter and YES for the MSGREQ parameter, theCESTPAIR command will end before the copying operation is completed.Figure 40 (page 96) shows an example of the CESTPAIR command.

Figure 40 CESTPAIR CommandCESTPAIR DEVN (X ‘DE80’ ) PRIM (X ‘0080’ ,30158,X ‘00’ ) SEC (X ‘0080’ ,30158,X ‘01’ ) MODE (COPY) PACE (15)


ESTPAIR (Adding Pairs)Table 38 (page 97) lists and describes the ESTPAIR command parameters that can be used whenyou create SIz pairs.

Table 38 ESTPAIR Command Parameters (Adding Pairs)


You should specify only one parameter of thethree parameters. The italic part on the leftmeans that it is the arbitrary name. Forexample, dname means the arbitrary uniquename of the JCL statement which identifies thevolume.

DDNAME = dname = JCL statement identifyingthe volume.SYSNAME = sysxxx = SYSNAME in theASSGN system control statement.UNITADDRESS = ccuu = device number.

DDNAME,SYSNAME, orUNITADDRESS


Primary volume (S-VOL): SSID, serial number,and channel connection address.You must set MSF00 instead of a serial numberto request the Add and Split operation. Thisparameter is valid for MODE(COPY) orMODE(NOCOPY) only.You must set MAnn0 instead of a serial numberif you create SIz pairs in a CTG with ID nn.

PRI

Secondary volume (T-VOL): SSID, serialnumber, and channel connection address.

SEC

When you perform ESTPAIR command on SIz,no matter whether you specify COPY orNOCOPY for the MODE parameter, thestorage system recognizes it as COPY mode.Therefore, initial full-volume copy will beperformed.

COPYMODE

NOCOPY

Copy speed will be slow, except when the DKCemulation type is 2105 or 2107. When theDKC emulation type is 2105 or 2107, thecopy speed is always medium regardless whatyou specify for the PACE parameter.

1PACE

Copy speed will be medium.Other than 1


If you specify this parameter whenMODE(RESYNC) is set, the command endsabnormally by reporting CC = 12. Do notspecify this parameter when MODE(RESYNC)is set.

YESMSGREQ

NO

Primary volume CU number, or secondaryvolume CU number.1

LSS

Pair create operation will be performedwhether the T-VOL is online or not.

YESONLINSEC2

Pair create operation will not be performed ifthe T-VOL is online.

NO

1 CU number or the parameter is valid only for the DKC emulation type 2105 or 2107.2 When you do not specify the parameter, the result is same as when you specify NO for this parameter.

Figure 41 (page 98) shows an example of the PPRCOPY ESTPAIR command.

Adding Pairs Using PPRC Commands 97

Figure 41 PPRCOPY ESTPAIR Command//EPAIR JOB// EXEC PGM=ICKDSF//SYSPRINT DD SYSOUT=*//DD1 DD UNIT=SYSDA,DISP=SHR,VOL=SER=DKDE80//SYSIN DD *PPRCOPY ESTPAIR DDNAME(DD1) PRI(X’0080’,30158,X’00’) SEC(X’0080’,30158,X’01’) MODE(COPY) PACE(15)/*//

Splitting Pairs Using PPRC CommandsThe CSUSPEND and PPRCOPY SUSPEND commands are equivalent to the ShadowImage forMainframe split pair operation. The CSUSPEND and the PPRCOPY SUSPEND commands must beissued to the S-VOL, and the pair status must be duplex.This section describes the parameters and examples of the CSUSPEND and the PPRCOPY SUSPENDcommand.

CSUSPENDTable 39 (page 98) lists and describes the CSUSPEND command parameters that can be usedwhen you split SIz pairs.

Table 39 CSUSPEND Command Parameters


Device number.DEVN

The parameter MPS00 is for a steady splitrequest.The parameter MAnn0 is for a quick splitrequest on all pairs in a CTG.If you set a parameter other than the serialnumber, MPS00 or MAnn0, the command willbe rejected.


You can set MPS00 or MAnn0 instead of aserial number. nn is the CTG ID.

PRIM


SEC

SIz does not use this parameter. SIz ignores it.Not applicable.PRIMARY

See 3, however, see the IBM document forimportant information.

See 3.QUIESCE2

1 The CU number or the parameter is valid only for the DKC emulation type 2105 or 2107.2 The parameter is valid only for the DKC emulation type 3390. If the DKC emulation type is 2105 or 2107, the TSO

command ignores the parameter and the ICKDSF job ends abnormally (CC = 12).3 The CSUSPEND QUIESCE option has been disabled by APAR OW15247 or APAR OW15248. See either of these

APARs and the latest IBM PPRC documentation for detailed information on the QUIESCE option. Check with your HPaccount team before using the QUIESCE option with the HP XP storage system. If the QUIESCE option is issued tocertain volumes (for example, active SPOOL, PAGE, or CATALOG datasets, active SYSRES volume), the attached hostsmay enter a deadlock condition and may require a storage control IML to correct the condition.

The QUIESCE parameter is used to modify the functionality of the CSUSPEND TSO command. Forexample, if the QUIESCE parameter is specified, the pair will be quiescent and subsequent writerequests to the S-VOL will be suspended by the host until the QUIESCE condition is released.You can use QUIESCE parameter to the SIz pairs only when the pair status is duplex. If an SIzS-VOL has more than one T-VOL, the QUIESCE parameter is effective if at least one pair is specified.


Write requests at the S-VOL will start when all QUIESCE conditions are released. The followingconditions cause the XP storage system to automatically release the QUIESCE condition:

• A CSUSPEND TSO command without the QUIESCE parameter is accepted.

• A CDELPAIR TSO command is accepted.

• A Delete, Suspend, or Split Pair command (from the Remote Web Console computer) isaccepted.

• Storage system power-on-reset is executed.If a ShadowImage for Mainframe pair is suspended because of an internal storage system errorcondition, the QUIESCE option is applied. In this case, release the QUIESCE condition by deletingthe pair.SIz and TCz are processed independently. The CSUSPEND/QUIESCE command is effective foreither the SIz or TCz pair specified in the command.Figure 42 (page 99) shows an example of the CSUSPEND command.

Figure 42 CSUSPEND CommandCSUSPEND DEVN (X ‘DE80’ ) PRIM (X ‘0080’ ,30158,X ‘00’ ) SEC (X ‘0080’ ,30158,X ‘01’ )

SUSPENDTable 40 (page 99) lists and describes the SUSPEND command parameters that can be used whenyou split SIz pairs.

Table 40 SUSPEND Command Parameters





The parameter MPS00 is for a steady splitrequest.The parameter MAnn0 is for a quick splitrequest on all pairs in a CTG.1

If you set a parameter other than the serialnumber, MPS00 or MAnn0 will be rejected.

Primary volume (S-VOL): SSID, serial number,and channel connection address.You can set MPS00 or MAnn0 instead of aserial number where nn is the CTG ID.

PRI


SEC

SIz does not use this parameter. SIz ignores it.Not applicable.PRIMA

See 3. Also, see the IBM document forimportant information.

See 3.QUIESCE2

Primary volume CU number and secondaryvolume CU number.4

LSS

Splitting Pairs Using PPRC Commands 99

1 If you perform a quick split request on all pairs in a CTG, confirm that the status of all pairs in the group is DUPLEX. Ifthere are one more pairs whose statuses are PENDING in the group, the quick split operation sometimes ends abnormally(CC = 12). If this occurs, wait until the copy operation for that pair ends.

2 The parameter is valid only for the DKC emulation type 3390. If the DKC emulation type is 2105 or 2107, the TSOcommand ignores the parameter and the ICKDSF job ends abnormally (CC = 12).

3 The CSUSPEND QUIESCE option has been disabled by APAR OW15247 or APAR OW15248. See either of theseAPARs and the latest IBM PPRC documentation for detailed information about the QUIESCE option. Check with yourHP account representative before using the QUIESCE option with the HP XP disk array storage system. If the QUIESCEoption is issued to certain volumes (for example, active SPOOL, PAGE, or CATALOG datasets, active SYSRES volume),the attached hosts may enter a deadlock condition and may require a storage control IML to correct the condition.

4 CU number or the parameter is valid only for the DKC emulation type 2105 or 2107.

Figure 43 (page 100) shows an example of the PPRCOPY SUSPEND command.

Figure 43 PPRCOPY SUSPEND Command//EPAIR JOB// EXEC PGM=ICKDSF//SYSPRINT DD SYSOUT=*//DD1 DD UNIT=SYSDA,DISP=SHR,VOL=SER=DKDE80//SYSIN DD *PPRCOPY SUSPEND DDNAME(DD1) PRI(X’0080’,30158,X’00’) SEC(X’0080’,30158,X’01’)/*//

Resynchronizing Pairs Using PPRC CommandsThe CESTPAIR and PPRCOPY ESTPAIR commands is equivalent to the ShadowImage for Mainframenormal resync operation. The CESTPAIR and PPRCOPY ESTPAIR commands must be issued to theS-VOL, and the pair status must be split or suspend when you resynchronize pairs.

CESTPAIR (Resynchronizing Pairs)Table 41 (page 100) lists and describes the CESTPAIR command parameters that can be used whenyou resynchronize SIz pairs.

Table 41 CESTPAIR Command Parameters (Resynchronizing Pairs)


Device number.DEVN



You can set an additional parametercorresponding to each request instead of aserial number.For a Quick Resync request, set MRF00. Thisparameter is valid for MODE(RESYNC) only.For a Quick Restore request, set MRQ00. Thisparameter is valid for MODE(RESYNC) only.For a Reverse Copy request, set MRR00. Thisparameter is valid for MODE(RESYNC) only.For a Resync request on all pairs in a CTG, setMAnn0. where nn is the CTG ID. This requesttriggers a normal Resync operation.

PRIM


SEC


Table 41 CESTPAIR Command Parameters (Resynchronizing Pairs) (continued)


Re-establish a split or suspended volume pair.This parameter is required.

RESYNCMODE

Copy speed of resynchronization will be slow,except when the DKC emulation type is 2105or 2107. When the DKC emulation type is2105 or 2107, the copy speed ofresynchronization is always medium regardlesswhat you specify for the PACE parameter.

1PACE

Copy speed of resynchronization will bemedium.

Other than 1


MSGREQ function is applicable.For a Resync request on all pairs in a CTG, donot use the MSGREQ function. If you use theMSGREQ function, the job will end abnormallyand CC = 8 will be reported.

YESMSGREQ

MSGREQ function is not applicable.NO

Pair resynchronize operation (forward) will beperformed whether the T-VOL is online or not.Pair resynchronize operation (backward) willbe performed whether the S-VOL and T-VOLare online or not.

YESONLINSEC1, 2

Pair resynchronize operation (forward) will notbe performed if the T-VOL is online.Pair resynchronize operation (backward) willnot be performed if the S-VOL and T-VOL areonline.

NO


Figure 44 (page 101) shows an example of the CESTPAIR command with the MODE(RESYNC)parameter.

Figure 44 CESTPAIR with MODE(RESYNC) ParameterCESTPAIR DEVN (X ‘DE80’ ) PRIM (X ‘0080’ ,30158,X ‘00’ ) SEC (X ‘0080’ ,30158,X ‘01’ ) MODE (RESYNC) PACE (15)

ESTPAIR (Resynchronizing Pairs)Table 42 (page 102) lists and describes the ESTPAIR command parameters that can be used whenyou resynchronize SIz pairs.

Resynchronizing Pairs Using PPRC Commands 101

Table 42 ESTPAIR Command Parameters (Resynchronizing Pairs)






CAUTION: When a Quick Restore operationor a Reverse Copy operation is required andif you specify NO for the ONLINSECparameter, the job will end abnormally byreporting CC = 12. If you specify YES for theONLINSEC parameter, you may execute thejob. However, note that the copying operationis performed without any online check.

Primary volume (S-VOL): SSID, serial number,and channel connection address.You can set an additional parametercorresponding to each request instead of aserial number.For a Quick Resync request, set MRF00. Thisparameter is valid for MODE(RESYNC) only.For a Quick Restore request, set MRQ00. Thisparameter is valid for MODE(RESYNC) only.For a Reverse Copy request, set MRR00. Thisparameter is valid for MODE (RESYNC) only.For a Resync request on all pairs in a CTG, setMAnn0. where nn is the CTG ID. This requesttriggers a normal Resync operation.

PRI


SEC

Re-establish a split or suspended volume pair.RESYNCMODE

Copy speed of resynchronization will be slow,except when the DKC emulation type is 2105or 2107. When the DKC emulation type is2105 or 2107, the copy speed ofresynchronization is always medium regardlesswhat you specify for the PACE parameter.

1PACE

Copy speed of resynchronization will bemedium.

other than 1


If you specify this parameter whenMODE(RESYNC) is set, the command endsabnormally by reporting CC = 12. Do notspecify this parameter when MODE(RESYNC)is set.

YESMSGREQ

NO

Primary volume CU number, or secondaryvolume CU number.1

LSS


Table 42 ESTPAIR Command Parameters (Resynchronizing Pairs) (continued)


Pair resynchronize operation (forward) will beperformed whether the T-VOL is online or not.Pair resynchronize operation (backward) willbe performed whether the S-VOL and T-VOLare online or not.

YESONLINESEC2

Pair resynchronize operation (forward) will notbe performed if the T-VOL is online .Pair resynchronize operation (backward) willnot be performed when the status of thevolumes are online or offline. The ICKDSF jobends abnormally (CC = 12).Although no error occurs when you specifyYES for this parameter, note that the copyingoperation is performed without any onlinecheck.

NO


Figure 45 (page 103) shows an example of the PPRCOPY ESTPAIR command with theMODE(RESYNC) parameter.

Figure 45 PPRCOPY ESTPAIR with MODE(RESYNC) Parameter//EPAIR JOB// EXEC PGM=ICKDSF//SYSPRINT DD SYSOUT=*//DD1 DD UNIT=SYSDA,DISP=SHR,VOL=SER=DKDE80//SYSIN DD *PPRCOPY ESTPAIR DDNAME(DD1) PRI(X’0080’,30158,X’00’) SEC(X’0080’,30158,X’01’) MODE(RESYNC) PACE(15)/*//

Deleting Pairs Using PPRC CommandsThe CDELPAIR and PPRCOPY DELPAIR commands are equivalent to the ShadowImage for Mainframedelete pair operation. The CDELPAIR and PPRCOPY DELPAIR commands must be issued to theS-VOL.A DELPAIR command performed when pair status is split enables the T-VOL to be accessed by thehost. A DELPAIR command performed when pair status is other than split allows non-reservedT-VOLs to be accessed by the host. Reserved simplex volumes cannot be accessed.

WARNING! For duplex SIz pairs, the S-VOL and its associated T-VOLs are usually not identical,because SIz update copy operations are asynchronous. Therefore, if a pair is deleted with statusother than split, the data integrity of the T-VOL cannot be guaranteed.

CDELPAIRTable 43 (page 104) lists and describes the CDELPAIR command parameters that can be used whenyou delete SIz pairs.

Deleting Pairs Using PPRC Commands 103

Table 43 CDELPAIR Command Parameters


Device number.DEVN



You must set MAnn0 instead of a serial numberif you delete all SIz pairs in the CTG nn. nn isthe CTG ID.

PRIM


SEC

1 CU number or the parameter is only valid for the DKC emulation type 2105 or 2107.

Figure 46 (page 104) shows an example of the CDELPAIR command.

Figure 46 TSO Delete CommandCDELPAIR DEVN (X ‘DE80’ ) PRIM (X ‘0080’ ,30158,X ‘00’ ) SEC (X ‘0080’ ,30158,X ‘01’ )

DELPAIRTable 44 (page 104) lists and describes the DELPAIR command parameters that can be used whenyou delete SIz pairs.

Table 44 DELPAIR Command Parameters






Primary volume (S-VOL): SSID, serial number,and channel connection address.You must set MAnn0 instead of a serial numberif you delete all SIz pairs in the CTG nn. nn isthe CTG ID.

PRI


SEC

Primary volume CU number, and secondaryvolume CU number.1

LSS

1 CU number or the parameter is valid only for the DKC emulation type 2105 or 2107.

Figure 47 (page 104) shows an example of the PPRCOPY DELPAIR command.

Figure 47 ICKDSF Delete Command//EPAIR JOB// EXEC PGM=ICKDSF//SYSPRINT DD SYSOUT=*//DD1 DD UNIT=SYSDA,DISP=SHR,VOL=SER=DKDE80//SYSIN DD *PPRCOPY DELPAIR DDNAME(DD1) PRI(X’0080’,30158,X’00’) SEC(X’0080’,30158,X’01’)/*//


Displaying Pair Status Using PPRC CommandsThe CQUERY TSO and PPRCOPY QUERY ICKDSF commands are equivalent to the SIz pair statusdisplay and status and history functions.ShadowImage for Mainframe supports multiple T-VOLs for an S-VOL, and SIz and TCz can bothbe defined for the same volume. When multiple pairs exist on one volume, the CQUERY and thePPRCOPY QUERY commands can only report the status of one pair. Table 45 (page 105) lists thestatus displayed by the host for the SIz and/or TCz volume pair configurations.

• If the HP disk array contains only ShadowImage for Mainframe pairs, the CQUERY and thePPRCOPY QUERY commands will report the ShadowImage for Mainframe pair status.

• If the HP disk array contains only TrueCopy for Mainframe pairs, the CQUERY and thePPRCOPY QUERY commands will report the TCz pair status.

• If the HP disk array contains both ShadowImage for Mainframe and TrueCopy for Mainframepairs, the CQUERY and the PPRCOPY QUERY commands will report the TCz pair status.To obtain the SIz pair status, issue the status command to the SIz T-VOL or use the ShadowImagefor Mainframe remote console software to view the SIz pair status.

• If an S-VOL has multiple T-VOLs, the status command will report pair status for the pair whoseT-VOL has the lowest LDEV ID. To obtain the status of a ShadowImage for Mainframe pairwith one of the other T-VOLs, issue the status command to the desired T-VOL. SeeTable 45 (page 105) and Table 46 (page 105).

Table 45 Pair Status Reported by the Host for Volumes in Multiple Pairs

Status Displayed by HostNumber of TCz PairsNumber of SIz Pairs

SIMPLEX00

SIz pair status01

SIz pair whose T-VOL has the lowest LDEV ID02 or more

TCz pair status10

TCz pair status11

TCz pair status12 or more

Table 46 Path Status Displayed by the CQUERY TSO and PPRCOPY QUERY DSF Commands

PPRCOPY QUERY DSF CommandCQUERY TSO CommandTCzSIz

No TCz pathexists.

TCz path exists.No TCz pathexists.

TCz path exists.

−Displays TCz path−Displays TCz pathS-VOLS-VOL

---- ----−---- ----−T-VOL

FFFF FFFF−FFFF FFFF−No volume

−Displays TCz path−Displays TCz pathS-VOLT-VOL

−−−−T-VOL

FFFF FFFF−---- ----−No volume

NOTE: The dash symbol (−) indicates that the combination is impossible.

Table 47 (page 106) shows the items and contents that will be displayed when you execute theCQUERY command or the QUERY command on an SIz pair.

Displaying Pair Status Using PPRC Commands 105

Table 47 Contents that Display when Issuing the CQUERY or the QUERY Command on SIz Pairs

ContentItem

Device number of the volume on which the CQUERY command is issued.DEVICE

PRIMARY indicates that the volume is an S-VOL.SECONDARY indicates that the volume is a T-VOL.

LEVEL

Pair status.STATE

Since this item is invalid for SIz pairs, ACTIVE is always displayed.PATH STATUS

Since this item is invalid for SIz pairs, NO is always displayed.CRIT

Since this item is invalid for SIz pairs, NO is always displayed.CGRPLB

SSID of the CU where the S-VOL belongs.PRIMARY-SSID

LDEV number of the S-VOL.PRIMARY-CCA

CU number of the S-VOL.PRIMARY-LSS

Serial number of the S-VOL.PRIMARY-SERIAL

SSID of the CU where the T-VOL belongs.SECONDARY-SSID

LDEV number of the T-VOL.SECONDARY-CCA

CU number of the T-VOL.SECONDARY-LSS

Serial number of the T-VOL. If you perform the CQUERY TSO command for theT-VOL, the following information is displayed as well as the serial number ofthe T-VOL.00ab000nnnnn

a:

• S: This pair is defined as a CTG.

• 0: Other than listed above.

b:

• @: This pair was split by using the At-Time Split function.

• 0: Other than listed above.

nnnnn: Serial number of the T-VOL.

SECONDARY-SERIAL

Since this item is invalid for SIz pairs, 1 is always displayed.1PATHS

Since this item is invalid for SIz pairs, FFFF FFFF is always displayed.1SAID DEST STATUS

Since this item is invalid for SIz pairs, PATH ESTABLISH is always displayed.1DESCRIPTION

Since this item is invalid for SIz pairs, 100% is always displayed.1PERCENT OF COPY COMPLETE

Since this item is invalid for SIz pairs, the content of this item is also invalid.SUBSYSTEM

Since this item is invalid for SIz pairs, the content of this item is also invalid.WWN

Since this item is invalid for SIz pairs, the content of this item is also invalid.LIC LEVEL

1 When the MCU-RCU path for TCz is created on the CU where the SIz pair is created, the information about theMCU-RCU path will be displayed. For detailed information about the MCU-RCU path, see the HP StorageWorksXP24000/XP20000 Continuous Access Software User's Guide.

CQUERYTable 48 (page 107) lists and describes the CQUERY command parameters that can be used whenyou see the status of SIz pairs.


Table 48 CQUERY Command Parameters

ValueParameter

Device number.DEVN

Figure 48 (page 107) shows an example of the CQUERY command.

Figure 48 CQUERY Command14.27.58 JOB04573 ANTP8802I CQUERY DEVN(6400)14.27.58 JOB04573 ANTP0090I CQUERY FORMATTED LVL 4 220 220 VOLUME REPORT 220 ************** PPRC REMOTE COPY CQUERY - VOLUME ******************** 220 * (PRIMARY) (SECONDARY) * 220 * SSID CCA LSS SSID CCA LSS* 220 *DEVICE LEVEL STATE PATH STATUS SERIAL# SERIAL# * 220 *------ --------- ---------- ----------- --------- --------- * 220 * 6400 PRIMARY.. DUPLEX.... ACTIVE.. 2700 00 00 2700 01 00 * 220 * CRIT(NO)....... CGRPLB(NO). 000000063515 000000063515* 220 * INCRES(NO). * 220 * PATHS SAID DEST STATUS: DESCRIPTION * 220 * ----- --------- ------ ------------------- * 220 * 1 FFFF FFFF 01 PATH ESTABLISHED... * 220 * ---- ---- 00 NO PATH............ * 220 * ---- ---- 00 NO PATH............ * 220 * ---- ---- 00 NO PATH............ * 220 * SUBSYSTEM WWNN LIC LEVEL * 220 * ----------- ---------------- ----------- * 220 * PRIMARY.... 0000000000000000 80.9.6.255 * 220 ******************************************************************** 14.27.59 JOB04573 ANTP0001I CQUERY COMMAND COMPLETED FOR DEVICE 6400. COMPLETION CODE: 00

When a command is issued to the target volume (T-VOL) in a CTG, the serial number of theSECONDARY is displayed in the last part of the following five-part format.

SECONDARY serial numberSplit using At-Time Splitoperation

Belongs to CTG

30158000@S00

00: Indicates the serial number of SECONDARY.S indicates that the volume belongs to a CTG.@ indicates a split using the At-Time Split operation with the ATSPLIT command.000: Indicates that the pair belongs to a CTG.30158 indicates the SECONDARY serial number.

QUERYTable 49 (page 107) lists and describes the QUERY command parameters that can be used whenyou see the status of SIz pairs.

Table 49 QUERY Command Parameters





Figure 49 (page 108) shows an example of the QUERY command.

Displaying Pair Status Using PPRC Commands 107

Figure 49 PPRCOPY QUERY Command00 PPRCOPY QUERY UNIT(6400)-ICK00700I DEVICE INFORMATION FOR 6400 IS CURRENTLY AS FOLLOWS:- PHYSICAL DEVICE = 3390- STORAGE CONTROLLER = 2105- STORAGE CONTROL DESCRIPTOR = E8- DEVICE DESCRIPTOR = 0A- ADDITIONAL DEVICE INFORMATION = 4A000035- TRKS/CYL = 15, # PRIMARY CYLS = 33390ICK04030I DEVICE IS A PEER TO PEER REMOTE COPY VOLUME00 QUERY REMOTE COPY - VOLUME0 (PRIMARY) (SECONDARY) SSID CCA SSID CCA DEVICE LEVEL STATE PATH STATUS SER # LSS SER # LSS0------ --------- -------------- ----------- ----------- ----------- 6400 PRIMARY DUPLEX ACTIVE 2700 00 2700 01 63515 00 63515 000 PATHS SAID/DEST STATUS DESCRIPTION ----- --------- ------ ---------------- 1 FFFF FFFF 01 PATH ESTABLISHED00-ICK02206I PPRCOPY QUERY FUNCTION COMPLETED SUCCESSFULLY


9 TroubleshootingThis chapter provides troubleshooting information for ShadowImage for Mainframe and instructionsfor calling technical support.

• “Troubleshooting” (page 109)

• “SIM Reporting” (page 110)

• “Calling HP Technical Support” (page 111)

TroubleshootingIf you have a problem with Remote Web Console, see the HP StorageWorks XP24000/XP20000Remote Web Console User's Guide for troubleshooting information.Table 50 (page 109) provides general troubleshooting instructions for ShadowImage for Mainframeoperations.

Table 50 General ShadowImage for Mainframe Troubleshooting

Corrective ActionError

Make sure all ShadowImage for Mainframe requirements and restrictions aremet.Make sure the HP XP storage system is powered on and fully functional (NVS,cache, DFW). See the HP StorageWorks XP24000/XP20000 Remote WebConsole Error Codes for operational and troubleshooting information for theXP storage system.Check all input values and parameters to make sure that you entered the correctinformation in the ShadowImage for Mainframe windows (for example, S-VOLand T-VOL IDs).

The Remote Web Console computerhangs, or SIz operations do notfunction properly.

Make sure the correct CU image is selected.The volume pairs are not displayingcorrectly.

Remote Web Console displays an error message if an error occurs during SIzoperations. The Error dialog box of SIz displays the error code and the message(see Figure 50 (page 110)).

An SIz error message is displayed onthe Remote Web Console computer.

Save the Java log file on the Remote Web Console computer, and report to theHP technical support.For Windows 2000, the Java log file is in the following place:c:\Documents and Settings\login user ID\plugin131.traceExit the Web browser, close all other applications, and then restart the computer.If the problem persists, verify that the computer’s operating system and LANhardware and software are properly configured.

There is a problem with the RemoteWeb Console computer.

If a pinned track occurs on a SIz S-VOL or T-VOL, the XP storage system willsuspend the pair. Contact your HP representative for assistance in recoveringpinned tracks.

There is a pinned track on an SIzvolume.

The SVP might not be ready or perform some write processes from the othersystem. Wait for a while, and then select File, Refresh from the window.

Only the Exit and Refresh menus areeffective when accessing the SVP fromthe Remote Web Console computer.

The ShadowImage for Mainframe displays error messages on the Remote Web Console computerwhen error conditions occur during SIz operations. The ShadowImage for Mainframe Error dialogbox (see Figure 50 (page 110)) displays the SIz error code and message.To display the Error dialog box, select the failed volume in the Preview List in the Pair Operationwindow, right-click the mouse to display the menu, and then click the Error Detail command. See

Troubleshooting 109

the HP StorageWorks XP24000/XP20000 Remote Web Console Error Codes for the list of errorcodes and corrective actions.

Figure 50 Error Dialog Box

SIM ReportingThe storage system reports a service information message (SIM) to the host when it is necessary tonotify the user of a possible service requirement for the storage system. The SIMs are classifiedaccording to severity for reporting and logging purposes:1. Service2. Moderate3. Serious4. AcuteThe larger the number becomes, more the message becomes important. The SVP reports all SIMsrelated to SIz operations, and all SIMs are stored on the SVP for use by HP personnel. The SIMsreported to the zSeries and S/390 host are logged in the SYS1.LOGREC dataset of the hostoperating system. Each time a SIM is generated, the amber Message LED on the control panel(under the Ready and Alarm LEDs) turns on as an additional alert for the user. The Remote WebConsole computer also displays the SIMs to provide an additional source of notification for theuser.For further information on SIM reporting contact your HP service representative or HP technicalsupport.Figure 51 (page 110) shows a typical 32-byte SIM from the storage system.

Figure 51 Typical SIM Showing Reference Code and SIM Type

SIMs are displayed on the host console by reference code (RC) and severity. The six-digit RC(composed of bytes 22, 23, and 13) identifies the possible error and determines the severity. TheSIM type (byte 28) indicates the component which experienced the error.Table 51 (page 111) shows the DKC SIM (byte 28 = F1) related to SIz operations.

110 Troubleshooting

Table 51 SIM for ShadowImage for Mainframe

DescriptionsImportance LevelReference Code

SSB23SSB22

Copying process ends abnormally and the pairstatus changes to Suspend.• x indicates the last digit of the T-VOL’s CU

number (0x0 to 0xF).• SSB13 indicates the T-VOL’s LDEV number.

ModerateDx47

The pair status changes to PSUE because thepower supply was turned on while the sharedmemory volatilized.

ModerateE747

Calling HP Technical SupportIf you need to call the HP technical support, make sure to provide as much information about theproblem as possible, including:

• The circumstances surrounding the error or failure.

• The ShadowImage for Mainframe (or other) error codes displayed on the Remote Web Consolecomputer.

• The exact content of any error messages displayed on the host systems.

• The Remote Web Console configuration information (use the FD Dump Tool).

• The service information messages (SIMs), including reference codes and severity levels,displayed by Remote Web Console and/or logged on the host.

For worldwide technical support information, see the HP support website:http://www.hp.com/support

Calling HP Technical Support 111

http://www.hp.com/support

10 Support and Other ResourcesRelated Documentation

• HP StorageWorks XP24000/XP20000 Remote Web Console User's Guide

• HP StorageWorks XP24000/XP20000 External Storage Software User's Guide

• HP StorageWorks XP for Business Continuity Manager Software User's Guide

• HP StorageWorks XP24000/XP20000 for FlashCopy Mirroring Software User's Guide

• HP StorageWorks XP24000/XP20000 Performance Monitor User's Guide

• HP StorageWorks XP24000/XP20000 Performance Control User's Guide

• HP StorageWorks XP24000/XP20000 Auto LUN Software User's Guide

• HP StorageWorks XP24000/XP20000 Snapshot User's Guide

• HP StorageWorks XP24000/XP20000 Cache Residency Manager User's Guide

• Hitachi TrueCopy™ for Mainframe User Guide: HP XP24000 Disk Array, HP XP20000 DiskArray

You can find these documents on the HP Manuals website:http://www.hp.com/support/manuals

In the Storage section, click Storage Software and then select a product.

Conventions for Storage Capacity ValuesHP XP storage systems use the following values to calculate physical storage capacity values (harddisk drives):

• 1 KB (kilobyte) = 1,000 bytes

• 1 MB (megabyte) = 1,0002 bytes

• 1 GB (gigabyte) = 1,0003 bytes

• 1 TB (terabyte) = 1,0004 bytes

• 1 PB (petabyte) = 1,0005 bytesHP XP storage systems use the following values to calculate logical storage capacity values (logicaldevices):

• 1 KB (kilobyte) = 1,024 bytes

• 1 MB (megabyte) = 1,0242 bytes

• 1 GB (gigabyte) = 1,0243 bytes

• 1 TB (terabyte) = 1,0244 bytes

• 1 PB (petabyte) = 1,0245 bytes

• 1 block = 512 bytes

HP Technical SupportFor worldwide technical support information, see the HP support website:


112 Support and Other Resources

http://www.hp.com/support/manuals


Before contacting HP, collect the following information:

• Product model names and numbers

• Technical support registration number (if applicable)

• Product serial numbers

• Error messages

• Operating system type and revision level

• Detailed questions

Subscription ServiceHP recommends that you register your product at the Subscriber’s Choice for Business website:

http://www.hp.com/go/e-updates

After registering, you will receive email notification of product enhancements, new driver versions,firmware updates, and other product resources.

HP WebsitesFor additional information, see the following HP websites:

• http://www.hp.com

• http://www.hp.com/go/storage

• http://www.hp.com/support/manuals

• http://www.hp.com/storage/spock

Documentation FeedbackHP welcomes your feedback.To make comments and suggestions about product documentation, send a message [email protected]. All submissions become the property of HP.

Subscription Service 113

http://www.hp.com/go/e-updates

http://www.hp.com

http://www.hp.com/go/storage

http://www.hp.com/support/manuals

http://www.hp.com/storage/spock

mailto:[email protected]

GlossaryC

CTG Consistency group.CU Control unit.CVS Custom volume size.

D

DFW DASD fast write.DKC Disk controller.

L

LD, LDEV Logical device. An LDEV is created when a RAID group is carved into pieces according to theselected host emulation mode (that is, OPEN-3, OPEN-8, OPEN-9). The number of resulting LDEVsdepends on the selected emulation mode. The term LDEV is also known as term volume.

LDKC Logical disk controller.LVI Logical volume or image (for example, 3390-3R).

M

M-VOL Main volume.MCU Main control unit.

N

NVS Nonvolatile storage.

P

P-VOL Primary volume.PB Petabyte; equals 1,000^5 bytes (for physical storage such as hard disk drives) or 1,024 TB or

1,024^5 bytes (for logical storage).PDEV Physical device.PPRC Peer-to-peer remote copy.

R

R-VOL Remote volume.RCU Remote control unit.

S

S-VOL Secondary or remote volume. The copy volume that receives the data from the primary volume.SCP State-change-pending.SI Hitachi ShadowImage. Also known as HP StorageWorks XP Business Copy.SIM Service information message.SIz ShadowImage for Mainframe.SIz ShadowImage for Mainframe.SVP Service processor. A computer built into a disk array. The SVP, used only by an HP service

representative, provides a direct interface to the disk array.

114 Glossary

T

T-VOL Target volume.TB Terabyte. Equivalent to 1,000 Gb for data storage and statistics, or 1,024 Gb for memory.TCA TrueCopy Asynchronous.TCz Hitachi TrueCopy™ for Mainframe.

TSO Time sharing option.

U

URz Universal Replicator for Mainframe.USP Universal Storage Platform.

X

XRC Extended remote copy.

115

Index

Aadd operation, 10adding new pairs

using PPRC, 95At-Time Split, 78

CCache Residency Manager for Mainframe, 29CDELPAIR (PPRC command), 103CESTPAIR (PPRC command), 95CESTPAIR MODE(RESYNC) (PPRC command), 100conventions

storage capacity values, 112Copy Threshold option, 27CQUERY (PPRC command), 105CSUSPEND (PPRC command), 98CTG, 68, 78CTG window, 60custom-sized volumes, 41

Ddelete operation, 20Delete Volume Pair dialog box, 85deleting pair, 84deleting pairs

using PPRC, 103DELPAIR (PPRC command), 103Detail dialog box, 86DEVSERV commands, 94, 105displaying pair status

using PPRC, 105documentation

HP website, 112providing feedback, 113

duplex (status), 22

EError dialog box, 109ESTPAIR (PPRC command), 95ESTPAIR MODE(RESYNC), 100external volumes, 41

Hhelp

obtaining, 112History Window, 58Host I/O Performance option, 26, 27HP

technical support, 112

IICKDSF commands, 93see also PPRC commands

initial copy operation, 10installation, software, 51

Jjournal volumes, 42

Nnormal resync operation, 15

Ooperations

add, 10, 70delete, 20normal resync, 15quick restore, 18quick resync, 16quick split, 12reserve, 10resync, 15reverse copy, 17split, 12starting, 51steady split, 12suspend, 15

Option setting, 68Option Window, 59

PPair Operation Window, 53pair status, 20parity group, 49pending (status), 22pinned track, 109PPRC commands

DELPAIR, 103ESTPAIR, 95ESTPAIR MODE(RESYNC), 100parameters, 96, 97, 98, 101, 104, 107QUERY, 105SIz and TCz operability, 94SUSPEND, 98

Preview List, 57PSF commands, 94

QQUERY (PPRC command), 105quick restore operation, 18quick resync operation, 16quick split operation, 13

RRAID level swap (quick restore), 49Remote Web Console computer, 9Remote Web Console main window, 52, 65requirements, 41, 43reserve attribute, 10

resetting, 67setting, 66

116 Index

Reset Reserve Attribute dialog box, 67resync (status), 23resync operations, 15resync-R (status), 24Resynchronize Volume Pair dialog box, 82resynchronizing pairs, 81

using PPRC, 100reverse copy operation, 17

Sservice information message, 110Set Reserve Attribute dialog box, 66ShadowImage for Mainframe

adding pairs, 70combining with other features, 28components, 8deleting pairs, 84initial copy operation, 10operations, 10resynchronizing pairs, 81sharing volumes with TCz, 30sharing volumes with URz, 34splitting pairs, 73starting operations, 51suspending pairs, 80system requirements, 41update copy operation, 11

shared SIz/TCz volumes, 30shared SIz/URz volumes, 34SIM, 110simplex (status), 22SP-pending (status), 23split (status), 23split operation, 12Split Volume Pair dialog box, 74splitting pairs, 73

using PPRC, 98status, 20steady split operation, 13storage capacity values

conventions, 112storage systems

supported models, 6Subscriber's Choice, HP, 113SUSPEND (PPRC command), 98suspend operation, 15Suspend Volume Pair dialog box, 80suspended (status), 24suspending pairs, 80Swap&Freeze, 25system requirements, 41

Ttechnical support, 113

HP, 112TrueCopy for Mainframe

sharing volumes with SIz, 30TSO commands, 93see also PPRC commands

UUniversal Replicator for Mainframe

sharing volumes with SIz, 34update copy operation, 11

VV-split (status), 23Virtual LVI, 28Volume List, 54Volume Security, 29

Wwebsites

HP, 113HP Subscriber's Choice for Business, 113product manuals, 112

XXP External Storage, 30

117