imageraid scsi series user's guide - fujitsu

imageRAID_160.book Friday, November 14, 2003 4:14 PM

U S E R ' S G U I D E

SCSI SeriesR A I D S T O R A G E S Y S T E M


U S E R ' S G U I D E

SCSI SeriesR A I D S T O R A G E S Y S T E M


Fujitsu Europe Limited

Restricted Rights and Liability

No part of this manual may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, recording, or otherwise, in whole or part, without prior written permission from Fujitsu Europe Limited.

Fujitsu Europe Limited shall not be liable for any damages or for the loss of any information resulting from the performance or use of the information contained herein. Your rights to the software are governed by the license agreement included with any accompanying software. Fujitsu Europe Limited reserves the right to periodically revise this manual without notice. Product features and specifications described are subject to change without notice.

Copyright

Fujitsu Europe LimitedHayes Park CentralHayes End RoadHayes, Middlesex, England UB4 8FE

Copyright © 2003 Fujitsu Europe Limited. All rights reserved.

imageRAID and the imageRAID logo are registered trademarks of Fujitsu Europe Limited, Fujitsu is a registered trademark of Fujitsu Limited.

Other company and product names herein may be trademarks or registered trademarks of their respective companies.

Agency Notes

WARNING: Drives and controller/adapter cards described in this manual should only be installed in UL-listed and CSA

certified computers that give specific instructions on the installation and removal of accessory cards (refer to your

computer installation manual for proper instructions).

ATTENTION: Les lecteurs et cartes contrôleurs décrits ici ne doivent être montés que sur des ordinateurs homologués (UL et

CSA) et livrés avec des manuels contenant les instructions d’installation et de retrait des accessoires. Reportez-

vous au manuel d’installation de votre ordinateur.

SERVICE NOTE: Remove the power cables prior to servicing this equipment.!

Contents

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About this Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vWelcome . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vFeatures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vi

1 Getting Started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1At a Glance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Front Bezel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3Power System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Standard AC Hot Swappable Power Supplies . . . . . . . . . . . . . . 4Optional DC Hot Swappable Power Supplies . . . . . . . . . . . . . . 5

Cooling Fan Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7SAF-TE Disk I/O Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9SCSI SAF-TE Cluster Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Spin-Up Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12Host SCSI I/O Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13Single Bus Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14imageRAID Controllers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15RS-232 Service Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Control and Monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Status Indicator LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18Power-On LED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18Channel Status LED. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18Power Supply Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18Fan Status. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Drive LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19Audible Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

2 Theory of Controller Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21Operating Modes Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Stand-Alone Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23Active-Active Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

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Active-Passive Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29Understanding Mirrored Operations . . . . . . . . . . . . . . . . . . . . . 31

A Word about Clustering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Minimizing Downtime for Maximum Data Availability . . . . . . . . 32How Available are Clusters? . . . . . . . . . . . . . . . . . . . . . . . . . . . 34Application of Availability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

3 Setup and Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35Storage System Detailed Installation . . . . . . . . . . . . . . . . . . . . . . 36

Installing the Storage System Enclosure into the Rack Cabinet . . 36Installing the Storage System into the Tower Stand . . . . . . . . . . 39Completing the Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Cabling the DC Power Supplies . . . . . . . . . . . . . . . . . . . . . . . 43Before You Continue... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45Special Note for Microsoft Windows 2000/2003 Installations . . . . 45Enclosure Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

imageRAID IRS-JBOD - 12 Drive Configuration . . . . . . . . . . . . 46imageRAID IRS-JBOD - 24 Drive Configuration . . . . . . . . . . . . 51imageRAID IRS-1U160/IRS-2U160 - 12 Drive Configuration . . . 54imageRAID IRS-1U160/IRS-2U160 - 24 Drive Configuration . . . 56imageRAID IRS-1U160 - 36 Drive Configuration. . . . . . . . . . . . 59

Topology Host Cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63Stand-Alone Single Port:Host Cabling . . . . . . . . . . . . . . . . . . . 64Stand-Alone Dual Port:Host Cabling . . . . . . . . . . . . . . . . . . . . 66Active-Active Single Port:Host Cabling. . . . . . . . . . . . . . . . . . . 69Active-Passive Dual Port:Host Cabling . . . . . . . . . . . . . . . . . . . 74Single Bus Clustering Configuration . . . . . . . . . . . . . . . . . . . . 76

Upgrades . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79Powering On the Storage System . . . . . . . . . . . . . . . . . . . . . . . . 80Powering Off the Storage System . . . . . . . . . . . . . . . . . . . . . . . . 80

4 Accessing the imageRAID Controllers . . . . . . . . . . . . . . . . . . . . . . 81Accessing the Disk Array Administrator Software/VT-100 . . . . . . 82Menu System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84Updating imageRAID Controller Firmware . . . . . . . . . . . . . . . . . 86

5 Monitoring Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89Enclosure Component Monitoring . . . . . . . . . . . . . . . . . . . . . . . 89

Status Indicator LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90Power-On LED. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90

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Channel Status LED. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90Power Supply Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90Fan Status. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90

Drive LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91Drive Status LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92Drive Activity LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92

Audible Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92LED Matrix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93

One-Touch Annunciation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95Enclosure SAF-TE Monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . 99Uploading SAF-TE Disk I/O & SCSI SAF-TE Cluster Card Firmware 101

Enclosure Fan Speed Control . . . . . . . . . . . . . . . . . . . . . . . . . . . 105SAFTE Commands Debug . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107

6 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109General Enclosure Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . 109Common SCSI Bus Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . 109Terminal Emulator and COM Port Problems . . . . . . . . . . . . . . . . 112Host SCSI Channel Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . 113Device SCSI Channel Problems . . . . . . . . . . . . . . . . . . . . . . . . . 113Problems During Bootup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114Controller Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115Common Problems and Interpreting the LEDs . . . . . . . . . . . . . . 115Warning and Error Events . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116

Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117

Disk Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118Disk Channel Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119

7 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121Removing the Front Bezel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121Replacing the Cooling Fans . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123Replacing an AC Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . 125Replacing a DC Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . 127Replacing a Disk Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129Replacing the SAF-TE Disk I/O or SCSI SAF-TE Clustering Card . . 131Replacing the Host SCSI I/O Card . . . . . . . . . . . . . . . . . . . . . . . 133Replacing a imageRAID Controller . . . . . . . . . . . . . . . . . . . . . . 135

Replacing a “Killed” Controller When in Active-Active/Active-Passive Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136

Replacing the Enclosure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137

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A Technical Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141

B Port Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145VHD/CI SCSI Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145SAF-TE Service Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148imageRAID Controller Service Ports . . . . . . . . . . . . . . . . . . . . . . 148Null-Modem Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149

DC Power Supply Connector Pinout . . . . . . . . . . . . . . . . . . . . . 150

C Regulatory Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151Compliance Information Statement . . . . . . . . . . . . . . . . . . . . . . 151FCC Class A Radio Frequency Interference Statement . . . . . . . . . 152Class A Taiwanese Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . 153Class A Japanese Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153CE Notice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153Power Cord Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154

Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155

Preface

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About this Manual

Welcome

Congratulations on the purchase of your new imageRAID® SCSI Series Storage

System from Fujitsu Europe Limited. The imageRAID SCSI Series is a very

high-performance fully fault-tolerant SCSI JBOD and RAID based storage system.

It’s unique 2U design is optimized to fit in the compact space of today’s data

center rack enclosures and as a deskside tower system.

At its core is the imageRAID SCSI JBOD storage enclosure which supports up to

twelve hot pluggable 1-inch high Ultra320 or Ultra160 disk drives all in a 2U

(3.47-inch) form factor enclosure. Full component redundancy is provided through

hot pluggable cooling fan module and independent power supplies. RAID

functionality is provided through an embedded Ultra160-to-Ultra160 SCSI RAID

Controller. The imageRAID SCSI RAID-based storage systems are available in two

model configurations, either as a single controller configuration designed for

Stand-Alone topologies, or dual controllers configuration for Active-Active or

Active-Passive topologies.

Product Identification

Storage Enclosure Number of Controllers Model of Controller

IRS-JBOD 0 JBOD

IRS-1U160xx-xx 1 imageRAID Controller (JSS122)

IRS-2U160xx-xx 2 imageRAID Controller (JSS122)

v

About this Manual

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This user’s guide is your complete documentation to set up the storage system

hardware, add components, cable the storage system components, replace parts,

and diagnose/repair your system.

For information on the software control, management and configuration, refer to

one of the following: VT-100 Software Guide or the AdminiStor Software Guide.

Features

The imageRAID SCSI Series Storage Systems are designed for mission critical

applications requiring the highest performance with uncompromised data

reliability, such as mid-range and enterprise server storage. They maintain

exceptionally high throughput and are ideally suited for high bandwidth data

intensive applications, such as electronic commerce, digital video, CAD, seismic

research, digital pre-press, and 3-D imaging.

The following are major features of the imageRAID SCSI Series Storage Systems:

� Ultra160 SCSI storage system enclosure.

� Ultra160-to-Ultra160 SCSI RAID Controller for RAID-based systems.

� Supports up to 12 drives in JBOD mode and 36 drives in RAID

configurations.

� A standard AC power supply with an option for a redundant second power supply.

� Optional DC power supply with an option for a redundant second power supply.

� Designed to fit standard 19-inch rack enclosures or a deskside tower.

� Sequential data transfers from disk arrays at over 320 MB per second

sustained in JBOD mode and 160 MB per second with the RAID Controller

option installed.

� Greater than 18,000 IOPs capability from a single controller.

� Active-Active failover with dual hot-pluggable controllers.

� Operating system independent – no special software or drivers required.

� Ultra160 low-voltage differential single (LVDS) host ports.

Features

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� Up to three UltraLVD SCSI 160 MB/sec disk channels (A host channel is

used in some configurations as a disk channel to provide the third disk

channel.).

� Support for up to 36 disk drives organized in up to 24 arrays and a total of

64 logical unit numbers (LUNs).

� Supports clustering environments.

� All SCSI channels are backward compatible Ultra2 LVD and

Ultra/Fast/Asynchronous single-ended SCSI modes.

� All SCSI channels support SPI-3 Cyclic Redundancy Check (CRC) and

Domain Validation.

� Support for cache memory options from 64 MB up to 512 MB using

standard PC-133 compatible SDRAM. DIMMs must be qualified by nStor.

� Support for RAID levels 0, 1, 3, 4, 5, 10, 50, and just a bunch of disks

(JBOD).

� Online capacity expansion allowing reconfiguration without interruptions.

� Drive Roaming for no loss of RAID and LUN configurations.

� Advanced disk utilities, array verification and recovery, and spare pooling.

� Firmware can be upgraded either in-band over the SCSI bus or out-of-band

via the RS-232 service port.

� Continuous runtime diagnostics for warnings and automatic shutdown for

out-of-spec temperature and voltages, battery failures, and internal errors.

Features vii

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Features

Chapter 1

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Getting Started

This chapter provides a description of the enclosure components and its onboard

monitoring systems.

The Components section identifies and gives a complete description of each

major component. The Monitoring section describes the enclosure’s LEDs, and

the manner in which the normal and abnormal conditions are presented.

imageRAID SCSI Series Storage System

RESET ALARM

RES

ET A

LAR

M

Tower Model

Rack-Mount Model

1

Chapter 1 - Getting Started

2


At a Glance

The following illustrations show the featured components of the imageRAID SCSI

Series Storage System. Familiarize yourself with its components prior to installing

and using the storage system.

Enclosure Component Identification

CTRL 2

CTRL 1

JP7

ADD JUMPER

TO DISABLE

TERMINATION

ADD JUMPER

TO SUPPLY

TERM POWER

JP6

JP5

CNFG 1CNFG 2RAID

SPARE 1SPARE 2

BAUD SELDLY STRT

RMT STRT

JP8ADD JUMPER

TO DISABLE

TERMINATION

ADD JUMPER

TO SUPPLY

TERM POWER

CHANNEL -1

CHANNEL -2

JP1

ADD JUMPER

TO DISABLE

TERMINATION

ADD JUMPER

TO SUPPLY

TERM POWER

JP3

JP2JP4

Channel 3

JP1

ADD JUMPER

TO DISABLE

TERMINATION

ADD JUMPER

TO SUPPLY

TERM POWER

JP3

JP2JP4

350-watt hot pluggableindependent power

supplies (AC shown)

Dual in-line80-CFM hot

swappablecooling fans

SAF-TE Disk I/O Card orSCSI SAF-TE Cluster Card

Host SCSI I/O Cards

SAF-TE Service &Controller Service Ports

Controller 2Controller 1

ControllerCover Plate

Optional Dual SCSI-to-SCSIRAID Controllers

Channel 1

CH 3Channel 0

CH 0

Channel 2

RESET ALARM

Drive Status LEDs(left column of LEDs)

Power On LED

Channel Status LED

Power Supply Status LED

Fan Status LED

Alarm Reset Button

Drive Activity LEDs(right column of LEDs)

At a Glance



Components

This section provides a description of each of the major components that

comprise the imageRAID SCSI Series Storage System.

Front Bezel

The front bezel houses the Status LEDs, Drive LEDs, and alarm reset button. When

removed, the user has access to the disk drives. The front bezel can be installed or

removed without interruption to system activities.

Embedded within the front bezel is the electronic package that provides the

communication with the SAF-TE processors (SEP). The SAF-TE processors control

the signals to the front panel through a smart interconnect. Refer to “Control and

Monitoring” on page 17 for details on the monitoring functions.

Power is applied to the front bezel through a smart interconnect edge connector,

where a control circuit monitors the bezel for a proper connection. When the bezel

is properly installed and power is applied to the enclosure, the bezel is

immediately energized.

Removable Front Bezel

To remove the bezel and gain access to the disk drives, use a Phillips screwdriver

to release both bezel fasteners, then grasp and remove the bezel. The fasteners

rotate one-quarter turn clockwise to lock and counter-clockwise to unlock.

Reset Alarm

Dr ive LEDs

Alarm Reset Button

Status LEDs

Components 3


4


Power System

Standard AC Hot Swappable Power Supplies

The AC power system consists of two 350-watt hot-pluggable power supplies, each

with independent AC power cords and cooling fans. This power system provides

the enclosure with “N+1” redundant power. Each power supply has auto-switching

circuitry for use with either 100V or 240V AC systems.

Power Supply

Power is applied to the enclosure by pressing each of the two power supply

On/Off switches to their “On” position. A Power On LED located on each power

supply will be illuminated indicating that AC power has been applied. The front

bezels’ Power On LED will also be illuminated indicating that power has been

applied.

Each power supply also incorporates an amber general Fault LED. If the power

supply is installed and power is not applied to the power supply or the power

supply cooling fan fails, the Fault LED will illuminate, along with an audible alarm.

The front bezels’ Power Supply Status LED will illuminate green when both

power supplies are on and operating normally. If only one power supply is

operational, the Power Supply Status LED will be illuminated amber.

Each power supply has an AC Power Cord Module. The module has a power

cord bale incorporated into the design to secure the power cord once it has been

properly inserted. The bale prevents inadvertent disconnects.

Fault LED

Power On LED

Blank Plate

Power System



Optional DC Hot Swappable Power Supplies

The DC power system is designed to allow the storage system to be installed with

Telco system hardware isntallations. It consists of two 350-watt hot-pluggable

power supplies, each with independent DC power cables and cooling fans. It

provides the enclosure with “N+1” redundant power with Telco hardware. Each

power supply cables directly with your DC power feed system.

DC Power Supply

The DC power supply has the same user features to that of the AC Hot

Swappable Power Supplies described on the previous page.

NOTE: The DC system must be installed in a restricted access location, in

accordance with intent of the National Electrical Code. A restricted access

location is defined as an area intended only for qualified or trained

personnel only. Access should be controlled by key lock or access card.

Each power supply has a special cable connector that plugs into the face of the

power supply and mechanically connects to your DC feed system. Refer to the

Installation chapter for cabling procedures.

DC Source Site Requirements

Electrical Equipment Requirement

Voltage -36 to -72 VDC

Max. Operating Current 13.5 amp to 6.3 amps

Max. Input Surge Current 20.25 amps

Power On LED(green)

Fault LED(amber)

ReleaseLatch

Power Connector

Optional DC Hot Swappable Power Supplies 5


6


The power feed must be electrically isolated from any AC power source, provide

a reliable connection to earth (battery room positive bus is connected to the

grounding electrode), and capable of providing up to 600 watts of continuous

power per feed pair.

Overcurrent Protection Requirements

Overcurrent protection devices must be provided as part of each equipment rack.

Circuit breakers must be located between the DC power feed source and the

power supplies (two 20 amp double-pole fast rip DC-rated circuit breakers for

each power supply).

NOTE: Overcurrent protection devices must meet applicable national and local

electrical safety codes and be approved for the intended application.

Power supply overload protection will shut down the power supply when the

output power rating exceeds 110% to 130% of maximum rated output current.

DC Supply and Ground

You DC supply and ground conductor must meet the following requirements:

� Suitable condustor material: copper only.

� Power supply connections through the input connectors; 12AWG:

-48V

-48V Return

Ground to the power supply

� System ground conductor: 8 AWG.

� Cable insulation rating: minimum of 75 C, low smoke fume (LSF), flame

retardant.

� Branch circuit cable insulation color: per applicable national electrical

codes.

� Cable type: UL style 1028, UL 1581(VW-1), IEEE 383 compliant, or IEEE

1202-1991 compliant.

� Grounding insulation color: green/yellow.

Optional DC Hot Swappable Power Supplies



Cooling Fan Module

The cooling system consists of two high-performance (80-CFM) cooling fans

mounted in a single fan module which slides into a bay at the rear of the

enclosure. The design of the fan module provides for an easy-to-install user-

replaceable component in a live environment without interruption of service.

If any one fan should fail, cooling redundancy and efficiency are degraded. The

cooling fans and enclosure temperature are constantly monitored by the SAF-TE

processor for fault conditions. In the event of a fault condition the front panel Fan

Status LED will change from a green state to a solid amber state in the case of a fan

failure, or to a blinking amber green state in the case of an over-temperature

condition. In both cases an audible alarm sounds. The SAF-TE processor will also

provide notification data to monitoring software, such as StorView.

WARNING: Do not operate the enclosure for extended periods of time (greater

than 5 minutes) with the cooling fan module removed.

Cooling Fan Module

The enclosure has temperature sensors in three different areas, the drive bay, the

imageRAID Controllers, and the power supplies. There are several processes the

storage system takes to prevent component damage due to over temperature

conditions.

Fan Speed Override ControlJumpers JP1 (Fan 0)and JP2 (Fan 1)

Cooling Fan Module 7


8


If the drive bay area reaches a temperature of 50°C (122°F) an audible alarm will

sound, the front panel Fan Status LED will toggle amber green, and the monitoring

software will post a warning message. These notifications give the user a warning

that some condition is causing the enclosure temperature to exceed the preset

value, and an action is required by the user to determine the cause and take

corrective measures. It may be due to a blockage of air flow or a low fan speed.

If any controller reaches a temperature of 50°C (122°F) an audible alarm will

sound, the front panel Fan Status LED will alternate amber and green, and the

monitoring software will post a warning message. If the temperature on any

controller continues to rise, the controller will flush its cache and shutdown. If it is

the only controller (Simplex mode) or the only remaining controller (surviving

controller from a failed over operation) then the controller will also spin down the

disk drives at this temperature.

If any power supply reaches 85°C (185°F) the power supply will shut down.

The SAF-TE Disk I/O card has a firmware-based VT-100 interface which provides

an option to manage fan speed. This option provides a whisper mode fan

operation for noise sensitive environments. When enabled (default), and based on

a set of conditions, the software will manage the cooling fans RPM speed to

maintain the enclosure temperature while minimizing noise levels. Refer to

“Enclosure Fan Speed Control” on page 105 for more details on using this option.

A manual override of the fan speed control is available for special circumstance

environments. Referring to the illustration on the preceding page, two jumpers are

provided on the fan module printed circuit board to override the software control

of the fan speeds. This hardware setting routes full power voltage to the fans for

maximum operational speed, which is greater than the maximum speed set by the

automatic software control. This configuration is normally used when fan speed

noises are not an issue, and the ambient operating temperature is at or above 30°C

(86°F), thus ensuring that maximum available cooling is being provided.

The jumpers JP1 and JP2 by default are offset, which enables the automatic fan

speed control. The jumper JP1 controls Fan 0 and JP2 controls Fan 1. Placing the

jumper on both pins for each jumper will override the automatic setting and

configure the fans to maximum power.

Cooling Fan Module



SAF-TE Disk I/O Card

WARNING: The SAF-TE Disk I/O card is NOT HOT SWAPPABLE. You must

POWER DOWN the enclosure prior to removing or installing this card.

The SAF-TE Disk I/O card provides the built-in environmental and system status

monitoring, as well as, host connectivity to the disk drives, It also houses the

switches for setting SCSI IDs, VT-100 communication protocols, and drive spin up

options.

This card has two SAF-TE processors (SEPs) that continuously monitors the

enclosure for temperature status, fan status, power supply status, and SCSI

channel status. The SEPs are responsible for reporting environmentals and system

status to the front bezel LEDs/audible alarms and external monitoring software.

The monitoring system is fully compliant with SAF-TE specification protocol

version 1.0.

At power up, the SAF-TE processors read the SCSI switch settings and configures

the system for the appropriate addresses. It then executes instructions from

firmware performing a self-test diagnostics. The firmware is flash upgradeable

using the SAF-TE RS-232 Service port located below the I/O card slots at the rear

of the enclosure. The firmware also contains the necessary functions for

enclosure management via a VT-100 interface.

NOTE: Specific switch settings are discussed later in the Installation chapter.

SAF-TE Disk I/O Card

JP7

ADD JUMPER

TO DISABLE

TERMINATION

JP8

CNFG 1CNFG 2RAID

SPARE 1SPARE 2

BAUD SELDLY STRT

RMT STRT

ADD JUMPER

TO DISABLE

TERMINATION

CHANNEL -1

CHANNEL -2

RD

A0

1 2 3 4 5 6 7 8

A1

S0

S1

BD

DL

RM

UP

Channel 2Termination Jumper


Channel 1

Channel 2

DOWN

Confi

gurat

ion1

Confi

gurat

ion2

RAID

Spare

1Sp

are2

BAUD

Rate

Selec

t

Delay

Drive

Star

t

Remote

Drive

Star

t

SAF-TE Disk I/O Card 9


10


The SAF-TE Disk I/O card has two 68-pin VHD/CI SCSI connectors which

provides the connectivity from the host computer to the disk drives and drive

connectivity to the expansion JBOD enclosures. The connectors are labeled

“Channel 1” and “Channel 2.”

In JBOD dual-bus mode, the Channel 1 connector provides SCSI bus access

to drive slots 1 through 6, and the Channel 2 connector provides access to

the drives in slots 7 through 12.

In JBOD single-bus mode, the Channel 1 connector provides SCSI bus access

to all the drives, slots 1 through 12.

NOTE: Termination is automatic and provided from the drive mid-plane circuit

board. Termination is configured using two sets of jumpers on the card.

These jumpers enable and disable the automatic termination. Add the jumper

(installed on both pins) for JP8 on Channel 1 and JP7 for Channel 2 which

disables the automatic termination feature. (The default position is the jumper is

offset or unjumpered.)

In daisy-chain configurations, you must make changes to the jumper settings in

the enclosure’s SAF-TE Disk I/O card in that appears at the end of the

daisy-chain. In each supported configuration, a IRS-JBOD enclosure will be the

enclosure at the end of the daisy chain. In some configurations multiple

IRS-JBOD enclosures can appear at the end of the chain. Those enclosures will

need to have their jumper settings, JP7 and JP8, set to the jumpered position or

installed on both pins. During installation, instructions are provided to correctly

configure the daisy-chain enclosure settings.

SCSI SAF-TE Cluster Card

WARNING: The SCSI SAF-TE Cluster card is NOT HOT SWAPPABLE. You must

POWER DOWN the enclosure prior to removing or installing this card.

The SCSI SAF-TE Cluster card provides the host connectivity to the disk drives and

the built-in environmental and system status monitoring. The card incorporates

dual Ultra320 SCSI bus expanders to couple and isolate bus segments without

any impact to the protocol.




The card provides switches for setting the SCSI IDs, VT-100 communication

protocols, and drive spin up options. Two jumpers are provided to control the

ability to enable or disable the clustering bus isolation capabilities.


The Ultra320 bus expanders re-time the SCSI signals as necessary to guarantee

SCSI bus signal timings. They provide precise delay control which maintains

precise SCSI bus timings.

The use of the Ultra320 bus expanders allows the full support of clustering

environments where a system can be removed in a live environment without

bringing down the bus, therefore ensuring an ideal solution for high availability

clustering systems.

The SCSI SAF-TE Cluster card has two SAF-TE processors (SEPs) that continuously

monitor the enclosure for temperature status, fan status, power supply status, and

SCSI channel status. The SEPs are responsible for controlling the front bezel LEDs

and audible alarms. The data is also sent to any external monitoring software.

This monitoring system is fully compliant with SAF-TE specification protocol

version 1.0.

At power up, the SAF-TE processors read the SCSI switch settings and configures

the system for the appropriate addresses. It then executes instructions from

firmware performing a self-test diagnostics.

The SAF-TE processor firmware is flash upgradeable using the RS-232 Service

port located below the IO card slots at the rear of the enclosure. The firmware

also contains the necessary functions for enclosure management via a VT-100

interface.

JP7

ADD JUMPER

TO DISABLE

TERMINATION

JP8

CNFG 1CNFG 2RAID

SPARE 1SPARE 2

BAUD SELDLY STRT

RMT STRT

ADD JUMPER

TO DISABLE

TERMINATION

CHANNEL -1

CHANNEL -2

RD

A0

1 2 3 4 5 6 7 8

A1

S0

S1

BD

DL

RM

UP



Channel 1

Channel 2

DOWN

Confi

gurat

ion1

Confi

gurat

ion2

RAID

Spare

1Sp

are2

BAUD

Rate

Selec

t

Delay

Drive

Star

t

Remote

Drive

Star

t

SCSI SAF-TE Cluster Card 11


12


The SCSI SAF-TE Cluster card has two 68-pin VHD/CI SCSI connectors which

provides the connectivity from the host computer(s) to the disk drives and drive

connectivity to expansion JBOD enclosures. The connectors are labeled “Channel

1” and “Channel 2.”

In JBOD single-bus mode, the Channel 1 connector provides SCSI bus access to

all the drives, slots 1 through 12.

NOTE: Termination is automatic and provided internally.

To enable fault-tolerant clustering support the jumpers, JP7 and JP8, should be

offset (default setting). During installation setup, instructions are provided to

correctly configure the jumper settings. If the jumpers are installed on both pins

you will loose the clustering support capabilities. And removing the cables or

bringing down the system from one side will cause loss of access to the disk

drives and the other systems. Refer to the illustration “SCSI SAF-TE Cluster Card”

on page 11.

Spin-Up Settings

Switches 7 and 8 control the drive spin-up functions. The switches are directly

attached to all of the drive slot start signals. Switch 7 controls the “Start_1” signal

(Delay Spin-up) and switch 8 controls the “Start_2” signal (Remote Spin-up).

The table below describes the function of each switch.

“DL” Switch 7 “RM” Switch 8 Drive Spin-up Mode

Down (0)* Down (0)* Drive motor spins up at DC power on.

Down (0) Up (1) Drive motor spins up only on SCSI “start” commands.

Up (1) Down (0) Drive motor spins up after a delay of 12 (may vary depending on drive type) seconds times the numeric ID setting of the associated drive.

Up (1) Up (1) Drive motor will not spin-up.

* Default setting for proper operation.

Spin-Up Settings



Host SCSI I/O Card

WARNING: The Host SCSI I/O card is NOT HOT SWAPPABLE. You must POWER

DOWN the enclosure prior to removing or installing this card.

The Host SCSI I/O cards, also known as I/O cards, are installed IRS-1U160/

IRS-2U160 Series Storage systems. Each card has two 68-pin VHD/CI SCSI

connectors which provides the connectivity from the host computer to Channel 0

and Channel 3 of each imageRAID Controller. The connectors are labeled

“Channel 0” and “Channel 3.”

The Host SCSI I/O cards are not associated to one controller or the other, and

therefore, host connections can be made via either cards’ channel connector.

Under some configurations, Channel 3 can be configured as a drive channel. This

allows further expansion of the drive channels, which are in addition to the two

channels provided on the SAF-TE Disk I/O card.

NOTE: The SAF-TE Disk I/O card provides Channels 1 and 2 SCSI drive ports.

Cabling diagrams are provided in the Installation chapter for each supported

topology. To ensure proper failover and failback operations and LUN

presentation, cable your system based on the diagram for your selected topology.

Host SCSI I/O Card

The Host SCSI I/O cards incorporate an automatic termination feature and does

not require external terminators.

JP1 ADD JUMPER

TO DISABLE

TERMINATION

ADD JUMPER

TO SUPPLY

TERM POWER

JP3

JP2JP4

Termination Jumpersfor Host Channels 0 and 3

Channel 0

Channel 3

I/O

Host SCSI I/O Card 13


14


Jumpers on the card are provided to configure Term Power and Termination,

however their settings do not require any changes for the RAID enclosure. The

default settings are: JP1 and JP2 unjumpered or offset, and JP3 and JP4 installed

on both pins.

NOTE: In some circumstances, if the host system does not see the imageRAID

Controllers, remove the Host SCSI I/O card and install the jumpers JP1 and

JP2 on both pins to disable termination. This should resolve the problem.

Single Bus Module

The IRS-JBOD enclosure can be configured as a continuous single SCSI bus. This

option is provided to meet the application needs to address all of the disk drives

on one SCSI bus.

Removing the cover plate and installing the Single Bus Module configures the

internal bus from a split-bus to a single continuous bus.

Installing the Single Bus Module and Cover Plate

JP7

ADD JUMPER

TO DISABLE

TERMINATION

ADD JUMPER

TO SUPPLY

TERM POWER

JP6

JP5

CNFG 1CNFG 2RAID

SPARE 1SPARE 2

BAUD SELDLY STRT

RMT STRT

JP8ADD JUMPER

TO DISABLE

TERMINATION

ADD JUMPER

TO SUPPLY

TERM POWER

CHANNEL -1

CHANNEL -2

JP1

ADD JUMPER

TO DISABLE

TERMINATION

ADD JUMPER

TO SUPPLY

TERM POWER

JP3

JP2JP4

JP1

ADD JUMPER

TO DISABLE

TERMINATION

ADD JUMPER

TO SUPPLY

TERM POWER

JP3

JP2JP4

Cover Plate

Single-BusModule

Single Bus Module

Single Bus Module



imageRAID Controllers

The enclosure houses one or two imageRAID Controllers. It supports

configurations for single controller Stand-Alone topologies and dual controller

Active-Active/Active-Passive topologies.

The imageRAID Controller is a Ultra160-to-Ultra160 SCSI RAID controller. It has

four Ultra160 host ports and two Ultra160 SCSI disk channel ports. This controller

is occasionally referred to throughout this manual and in the software as a JSS122

model.

The controller operates in one of three different modes: Stand-Alone, Active-Active.

or Active-Passive. In the Stand-Alone mode, the controller operates autonomously.

In the Active-Active/Active-Passive mode, the two controllers operate as a pair. If

one controller fails in the Active-Active/Active-Passive mode, the other can take

over the failed controller’s work.

imageRAID Controller

The Disk Array Administrator software is embedded in the controller firmware,

and requires no specific software drivers for the host operating system. These

utilities are accessed through the Java-based AdminiStor storage management

software or a VT-100 terminal. (See either the AdminiStor Software Guide or the

VT-100 Software Guide.)

Ejector Handles

imageRAID Controllers 15


16


RS-232 Service Ports

Located below the I/O card slots is the SAF-TE service port and two imageRAID

Controller service ports. Refer to the illustration under “At a Glance” for the port

locations on the rear panel.

SAF-TE Service and imageRAID Controller Service Ports

The SAF-TE Service port provides an RS-232 serial interface to the SAF-TE Disk

I/O card allowing firmware uploads, and maintenance/service monitoring of the

SEPs. This port is labeled “SAF-TE.”

The two imageRAID Controller service ports, which are labeled “CTRL 1” and

“CTRL 2,” provide an interface to each imageRAID Controller. They provide

access to the firmware-based Disk Array Administration software and provide

options to update the firmware. The ports are standard DB9 connectors which

provides a connection using a null-modem serial cable for VT-100 terminal and

host serial port communication via emulation software.

CTRL 1

CTRL 2

SAF-TEController 1: Service Port

SAF-TE Service Port

Controller 2: Service Port

RS-232 Service Ports



Control and Monitoring

An integral part of the imageRAID SCSI Series Storage System is its control and

monitor capabilities.

The SAF-TE processors provide monitoring data for the enclosure environmental

conditions such as enclosure temperature, cooling fans, power supplies, and SCSI

bus status. This data is reported to the monitoring system to provide LED and

audible alarm notifications. This monitored information is also communicated to

external monitoring software.

Refer to “VT-100 Interface Enclosure Monitoring” on page 110 for complete

details.

The imageRAID Controllers provide monitoring data for its environmental

condition and logical arrays. They communicate that data to the front bezel LEDs,

third-party configuration and monitoring software, and the VT-100 Disk Array

Administration firmware-based software interface for management and

monitoring. (Refer to the software user’s guide for configuration, management,

and monitoring of the controllers and logical arrays.)

Front Bezel LEDs and Reset Button Identification

Reset Alarm

Drive Status LEDs(left column of LEDs)

Fan Status LED

Drive Activity LEDs(right column of LEDs)

Power On LED

Channel Status LEDPower Supply Status LED

Alarm Reset Button

Control and Monitoring 17


18


The imageRAID SCSI Series incorporates a “One-Touch Annunciation” which

provides an LED readout of the current switch configuration, host interface type,

bus configuration, communication BAUD setting, drive spin-up settings, and

controller status. Refer to “One-Touch Annunciation” on page 95 for more details.

Status Indicator LEDs

The Status Indicator LEDs comprise the Power-On LED, Channel Status LED,

Power Supply Status LED, and Fan Status LED. These series of LEDs are grouped

on the right side of the front bezel directly above the Alarm Reset button. The

following is an description of each LED.

Power-On LED

The Power-On LED signifies that the enclosure is powered on and will be

illuminated green when power has been applied.

Channel Status LED

The Channel Status LED will remain green at all times when the enclosure is

setup in JBOD mode. However, the LED will indicate the status of the logical

array(s), when enclosure is setup in a RAID configuration.

Power Supply Status

The Power Supply Status LED indicates the condition of the power supplies. The

LED will illuminate steady green when both power supplies are functioning

normally and will change to amber if one power supply should fail or is turned off.

Fan Status

The Fan Status LED indicates the condition of the cooling fans. The LED will

illuminate green when both fans are functioning normally and will change to

amber if any of the fans fail.




Drive LEDs

The Drive LEDs are located on the left side of the front bezel in between the

ventilation ribs and comprise the Drive Status LEDs and Drive Activity LEDs. The

Drive LEDs are grouped in pairs and are in the general location of the disk drive

slot. There are 12 Drive Status and Drive Activity LEDs, one group or pair for

each disk drive.

Refer to “Drive LEDs” on page 91 for detailed information.

Audible Alarm

An audible alarm will sound when any of the enclosure’s component condition

changes to an abnormal state. To silence the alarm, press the Alarm Reset button

located on the front bezel. The corresponding alarms’ LED will remain

illuminated until the condition returns to a normal state.

Drive LEDs 19


20


Audible Alarm

Chapter 2


Theory of Controller Operation

This chapter provides a functional overview and understanding of the supported

topologies and operating modes for the imageRAID SCSI Series Storage System.

With this information, you will be able to make the best choice based on the

supported topologies, to set up your storage solution.

The IRS-JBOD is the JBOD SCSI and Clustering enclosure storage system. The

IRS-1U160xx-xx model with its single imageRAID controller supports the

Stand-Alone operating mode, and the IRS-2U160xx-xx with its dual imageRAID

controllers supports the active-active or active-passive operating modes. There

are three operating modes for these two imageRAID SCSI Series models:

Stand-Alone, Active-Active, and Active-Passive. Either mode can function in

single or dual port configurations.

Operating Modes Overview

These operating modes let you configure the enclosure to support a variety of

host environments.

� JBOD – Use this mode for single or multiple enclosures without

imageRAID Controllers (IRS-JBOD), and clustering configurations.

� Stand-Alone Single Port – Use this mode when you have the

IRS-1U160xx-xx (single imageRAID controller) and require single-HBA host

access. There will be several cabling schemes to choose from when you

setup this operating mode.

21

Chapter 2 - Theory of Controller Operation

22


� Stand-Alone Dual Port – Use this mode when you have a IRS-1U160xx-xx

(single imageRAID controller) and require dual-HBA host access, or two

independent host access. There will be several cabling schemes to choose

from when you setup this operating mode.

� Active-Active Single Port – Use this mode when you have a

IRS-2U160xx-xx (dual imageRAID controllers) and require both controllers

to be active and processing host I/O operations. This operating mode uses

one of the host ports of each imageRAID controller and supports single or

dual host system connections. There are several cabling schemes when

setting up the single host system or dual host systems.

� Active-Passive Dual Port – Use this mode when you have IRS-2U160xx-xx

(dual imageRAID controllers) and require only one imageRAID controller

to be active. while the other controller is in a passive mode as a “hot”

standby. This operating mode supports single or dual host system with

several cabling schemes. It does not provide the performance compared to

either of the Active-Active modes.

The naming conventions are broken down into two parts: the first part refers to

the number of controllers and their state, and the second part refers to the state

of the controller’s host ports (not to be confused with the physical I/O ports).

Stand-Alone designates a single controller system, and Active-Active or

Active-Passive designates a dual controller system.

The Single Port or Dual Port component of the name convention refers to the

number of enabled Host ports on the active controller. Note that there are two

host ports on each controller (internally).

Operating Mode Number of Controllers

Number of Active Host Ports per Controller

Number of Disk Channels

Stand-Alone:Single Port(IRS-1U160xx-xx)

1 1 3

Stand-Alone:Dual Port(IRS-1U160xx-xx)

1 2 2

Active-Active:Single Port(IRS-2U160xx-xx

2 1 2

Active-Passive:Dual Port(IRS-2U160xx-xx)

2 2 (active controllers only) 2

Operating Modes Overview



Stand-Alone Mode

In Stand-Alone mode, the imageRAID controller operates autonomously. The

controller has two SCSI Host I/O connector ports. They are labeled in the

diagrams as “CH 0” and “CH 3.” In Single Port mode, the “CH 3” connector

becomes a drive channel providing one additional drive channel for expansion.

Advantages:

� Low cost entry-level RAID storage solution that is field upgradeable.

� Allows the use of dual host ports to maximize bandwidth and host IOPs.

(For example: this configuration is ideal for sequential access patterns,

where disks can supply more than 160 MB/sec of data to a host.)

� Host system has multiple paths to each array (with host driver).

� All arrays appear on both host ports at the same LUN positions in Dual Port

mode. (If both ports are connected to the same host, the host will see a

given array twice unless it does special processing to detect duplicate paths

to array. A host device driver may provide this functionality.)

� Hosts can detect redundant paths to an array by matching array serial

numbers from SCSI inquiry data.

Disadvantages:

� The controller is a single point of failure.

� Third-party software is required for upstream path fail-over.

On the following two pages are diagrams which depicts the logical function of

this operating mode.

Stand-Alone:Single Port with Single Host

T

Host I/O Connectors

Host SystemHBA 1

Drive I/O ConnectorsController Host Ports


T SEP

T

T= Location of internal termination

T

T

T

T

T

Controller 1SAF-TE Disk I/O

DiskCH1

Drives 7 - 12

Drives 1 - 6

DiskCH2

(CH3)

(CH0)CH 0

CH 3

CH

1C

H 2

CH 0

CH 3

Active

I/O Card

I/O Card

DiskChannel

Controller Disk Ports

SEP

Stand-Alone Mode 23


24


Stand-Alone:Single Port with Two Hosts

Stand-Alone:Dual Port with Single Host

T

Host I/O Connectors

Host System #!HBA 1



T SEP

T


T

T

T

T

T


DiskCH1

Drives 7 - 12

Drives 1 - 6

DiskCH2

(CH3)

(CH0)CH 0

CH 3

CH

1C

H 2

CH 0

CH 3

Active

I/O Card

I/O Card

DiskChannel


SEP

Host System #2HBA 1

T

Host I/O Connectors

Host System #1HBA 1



T SEP

T


T

T

T

T

T


DiskCH1

Drives 7 - 12

Drives 1 - 6

DiskCH2

(CH3)

(CH0)CH 0

CH 3

CH

1C

H 2

CH 0

CH 3

Active

Active

I/O Card

I/O Card


SEP

Host System #1HBA 2

Stand-Alone Mode



Stand-Alone:Dual Port with Two Hosts

Stand-Alone:Dual Port with Dual Host (Quad Cabling)

T

Host I/O Connectors

Host System #1HBA 1



T SEP

T


T

T

T

T

T


DiskCH1

Drives 7 - 12

Drives 1 - 6

DiskCH2

(CH3)

(CH0)CH 0

CH 3

CH

1C

H 2

CH 0

CH 3

Active

Active

I/O Card

I/O Card


SEP

Host System #2HBA 1

T

Host I/O Connectors

Host System #1HBA 1



T SEP

T


T

T

T

T

T


DiskCH1

Drives 7 - 12

Drives 1 - 6

DiskCH2

(CH3)

(CH0)CH 0

CH 3

CH

1C

H 2

CH 0

CH 3

Active

Active

I/O Card

I/O Card


SEP

Host System #1HBA 2

Host System #2HBA 1

Host System #2HBA 2

Stand-Alone Mode 25


26


Active-Active Mode

In the Active-Active mode, the two imageRAID Controllers cooperate to provide

redundancy. If one controller fails, the remaining controller will take over the

failed controller’s functionality. Each controller has two SCSI Host ports, they are

labeled in the diagrams as “CH 0” and “CH 3.”

In the Active-Active:Single Port mode, one Host port is normally active, and the

other is normally passive. In a failed over condition, the passive port of the

surviving controller becomes active and assumes the identity of the failed

controller. This failover process occurs without user intervention.

Arrays can only be accessed by the controller that currently owns them. One

controller will have no visibility to the others’ arrays. If one controller fails, the

surviving controller will take ownership of all arrays. Pool spares and unassigned

disks are visible to both controllers.

The two controllers communicate via the back-end disk buses. Although many

different message types are sent between the two controllers, the majority of the

data is write cache data. In the default write-back caching mode, any data that the

host writes to one controller is copied to the other controller before a good status

is returned to the host. By mirroring the data, if a controller fails, the surviving

controller will have a copy of all data that has not been written to the disk.

WARNING: The controllers communicate with each other using SCSI Initiator IDs

6 and 7 on each of the disk channels,. You should not change these

ID settings.

Each controller sends heartbeat messages to its partner controller. If a controller

does not receive a heartbeat message within a set time period, it will kill the

other controller assuming that it has malfunctioned.

Presentation of LUNs in Active-Active:Single Port Mode

Controller Status Controller 1Channel 0

Controller 1Channel 3



Both controllers online Controller 1 LUNs

Passive Controller 2 LUNs

Passive

Controller 1 Fails Inactive Inactive Controller 2 LUNs

Controller 1 LUNs

Controller 2 Fails Controller 1 LUNs

Controller 2 LUNs

Inactive Inactive

Active-Active Mode



After killing the other controller, it will take ownership of the arrays and will

activate its passive host port to assume the defunct controller’s identity.

The following diagrams illustrate the logical function of the controllers when both

are active and then again when one controller has failed.

Active-Active Single Port Mode Both Controllers Active

Active-Active Single Port Mode Controller 1 Failed

Host I/O Connectors

Host System #2 orHost System #1 HBA #2

Host System #1 HBA #1

Drive I/O Connectors

Controller Host Ports

SEP



DiskCH1

DiskCH2

(CH3)

(CH0)CH 0

CH 3

CH

1C

H 2

CH 0

CH 3

Passive

HOST I/O

HOST I/O

Active

Controller 2

DiskCH1

DiskCH2

(CH3)

(CH0) Passive

Active

SEP

T

T

T

T

T

T

T

T

Drives 7 - 12

Drives 1 - 6




Host I/O Connectors





SEP



DiskCH1

DiskCH2

(CH3)

(CH0)CH 0

CH 3

CH

1C

H 2

CH 0

CH 3

Failed

HOST I/O

HOST I/O

Failed

Controller 2

DiskCH1

DiskCH2

(CH3)

(CH0)

Active

Active

SEP

T

T

T

T

T

T

T

T

Drives 7 - 12

Drives 1 - 6




Active-Active Mode 27


28


In the failed-over condition, the active controller will present its native identity on

one Host port, and the failed-over controller’s identity on its other Host port.

After the controller has failed-over, the user can replace the failed controller with

a new controller, and the arrays will fail-back to the new controller without

intervention. If you want to retry the failed controller, it’s necessary to release the

killed status that the survivor asserts. This is accomplished via the VT-100 —

Other Controller Menu – Unkill Other menu option.

If you replace a failed controller with a new controller, the new controller will

attempt to retrieve its configuration (see “Understanding Mirrored Operations” on

page 31) from the surviving controller. This means that the replacement

controller will boot up with the same configuration as the controller it replaced.

If the surviving controller for some reason does not contain a valid mirrored

configuration, then the user must manually configure the replacement controller.

The correct host target ID must be set, and the Active-Active operating mode

must be enabled.

The Active-Active controller system makes some assumptions about the host

operating system’s SCSI processing. Specifically, the host must retry incomplete

commands after a specific time period. This retry is necessary because a host may

issue a command to a controller, the controller fails over, and the new controller

does not have a copy of the command.

Advantages:

� LUN isolation with the single port-single host system.

� Access to all LUNs with the quad cabling configuration.

� Provides transparent fail-over and fail-back.

Disadvantages:

� Host HBA or the Host SCSI bus are single points of failure.

� In a single host configuration, the host system is also a single point of

failure.

� No upstream fail-over with a single host dual HBA configuration. Upstream

fail-over requires dual host with quad cabling and third party file share/file

lock software.

� Protected LUN sharing between two host systems is not supported without

the use of third party file share/file lock software.

Active-Active Mode



Active-Passive Mode

In the Active-Passive mode, there is one active and one passive imageRAID

Controller. The primary (active) controller operates with both of its Host ports

enabled and presents all LUNs on both ports to maximize bandwidth. The

secondary (passive) controller keeps both its Host ports passive, and does not

service any LUNs. Both controllers monitor each other’s heartbeats and the

passive controller receives write data and parity logs from the active controller.

If the active controller fails, normal fail-over occurs to the passive controller,

which becomes active by enabling both of its Host ports and takes ownership of

all arrays.

Controller 1 is the default active controller. Controller 2 is always passive unless

controller 1 fails. The default active controller is not selectable.

Because the active controller does not have to mirror the passive controllers data,

more write-back cache memory can be made available to the active controller.

This means that half the cache memory can be dedicated to writes and half to

reads. This is the same allocation used in Stand-Alone mode.

Each controller sends heartbeat messages via the SCSI buses to its partner

controller. If a controller does not receive a heartbeat message within a set time

period, it will kill the other controller assuming that it has malfunctioned. After

killing the other controller, it will take ownership of the arrays and will activate

its passive host port to assume the defunct controller’s identity.

WARNING: The controllers communicate with each other using SCSI Initiator IDs

6 and 7 on each of the disk channels,. You should not change these

ID settings.

On the following page, you will find diagrams which illustrates the Active-Passive

mode logical functions when the controllers are functioning in a normal

condition and then in a failed condition.

Controller 1Host Port 0 (FC1)




Controller 1LUNs

Both ControllersOnline

Controller 1Failed

Controller 2Failed

Inactive Inactive Controller 2LUNs

Inactive Inactive Controller 1LUNs

Controller 2LUNs

Controller 1LUNs

Controller 2LUNs

Inactive Inactive

Active-Passive Mode 29


30


Advantages:

� Transparent fail-over and fail-back.

� Single point of failure is the host system. (There are no single points of failure when dual host systems are configured with clustering software.)

� Upstream fail-over.

Disadvantages:

� Lower performance than the Active-Active mode.

� Upstream fail-over requires third party software.

� Careful administration is necessary, since all the arrays are reported twice to the host operating system which requires the use of third party file share/file lock software to prevent data overwrites.

Active-Passive Dual Port Controller 1 Active

Active-Passive Dual Port Controller 1 Failed

Host I/O Connectors





SEP



DiskCH1

DiskCH2

(CH3)

(CH0)CH 0

CH 3

CH

1C

H 2

CH 0

CH 3

HOST I/O

HOST I/O

Active

Controller 2

DiskCH1

DiskCH2

(CH3)

(CH0) Passive

Active

SEP

T

T

T

T

T

T

T

T

Drives 7 - 12

Drives 1 - 6


Passive



Host I/O Connectors





SEP



DiskCH1

DiskCH2

(CH3)

(CH0)CH 0

CH 3

CH

1C

H 2

CH 0

CH 3

HOST I/O

HOST I/O

Failed

Controller 2

DiskCH1

DiskCH2

(CH3)

(CH0) Active

Failed

SEP

T

T

T

T

T

T

T

T

Drives 7 - 12

Drives 1 - 6


Active



Active-Passive Mode



Understanding Mirrored Operations

The mirroring feature causes configuration changes to be mirrored to the

opposite controller in an Active-Active configuration. The mirrored configuration

is stored in the other controller’s firmware (Flash). If a controller fails and is

replaced, then on boot up, it attempts to retrieve this configuration data from the

opposite controller. The intent is that the user will not need to reconfigure a new

controller when it is replaced.

NOTE: Dual imageRAID controller operations require that both controllers must

have the same version firmware installed.

If a replacement controller uses its mirrored configuration, you will see it print a

message during boot (saying it’s using the mirrored configuration), and then it

will reboot (rebooting is necessary for the mirrored configuration to take effect).

Here’s how the mirrored configuration works in different scenarios:

� Stand-Alone mode – The feature is not active.

� Active-Active mode where both controllers are operating normally – Each

controller uses its own local configuration.

� Active-Active mode where one controller boots and the other controller

does not boot due to some problem – The controller that boots uses its

local configuration.

� Active-Active mode where one controller is up when a new replacement

controller boots – the new controller attempts to get its mirrored

configuration from the other controller. If it is not available, it will try to

use its local configuration. If that is not available, then it will use the

default settings.

NOTE: When Clear Configuration is selected in the Flash Utility menu, both the

local Flash configuration and the other controller’s mirrored configuration

image are cleared. Also, there is an option (J) in the Flash Utility menu

that can be used to tell a booting controller to temporarily ignore the

mirrored configuration. This can be used, if for whatever reason, the

mirrored configuration should not be used by a booting controller. This is

primarily a safeguard, because a retrieved mirrored configuration is

checked extensively before it is used.

Understanding Mirrored Operations 31


32


A Word about Clustering

Minimizing Downtime for Maximum Data Availability

So-called open systems, such as Windows NT servers, just don’t provide the level

of availability that IS managers are familiar with on mainframes. A partial solution

to this problem is server clustering.

Clusters consist of two or more loosely coupled systems with a shared-disk

subsystem and software that handles failover in the case of a node (host) failure.

In most cases, hardware/software failover is performed automatically and is

transparent to users, although users will experience performance degradation as

processing is shifted to another cluster node. In some cases this failover can

occur in a matter of seconds.

High availability of data and applications is by far the most compelling reason to

go with clustering technology. For example, the accepted rule is that stand-alone

UNIX systems can provide 99.5% uptime. Adding a RAID subsystem can increase

the uptime to 99.9%. The goal of clustering is 99.99% availability.

Beyond clustering, fault-tolerant systems can provide 99.9999% uptime. At the

high end, continuous-processing systems offer virtually 100% uptime.

Although the increase from 99.5% to 99.99% availability may seem insignificantly

small, it adds up in terms of minutes per year of downtime. For example,

assuming a 7x24 operation, 99.5% uptime translates into 2,628 minutes — or

more than 43 hours of downtime per year. In contrast, 99.99% uptime translates

into less than one hour (52 minutes) of downtime per year.

Availability figures relate primarily to unplanned downtime. But the advantages

of clusters in terms of planned or scheduled downtime are even more significant.

If you figure two to sixteen hours per month for a server in a large shop.

Planned downtime requires shutting down stand-alone systems entirely. Result:

100% loss of processing for the duration of the downtime. But, with cluster, you

can shut down one node and off-load the processing to other nodes in the cluster

with no interruption of processing.

A Word about Clustering



High availability is not the only benefit of clustering. In some cases, users may

see advantages in the areas of performance, scalability, and manageability. In

reality, you can expect a 1.6x (80% efficiency) to 1.8x (90% efficiency)

performance increase as you go from one node to two nodes. Going from one

node to a four node cluster generally yields a 2.5x or 3x performance boost.

However, the cluster performance is application dependent. For example, READ

operations may yield a 1.8x performance increase going from one to two nodes,

but in a WRITE intensive application, you may only see a 1.4-1.6x improvement.

Although clusters seem to be relatively simple, they involve complex technology

that can be implemented in a variety of ways. The number of nodes supported

and type of interconnection used, and a number of other features differentiate

cluster implementations. One area of implementation is the manner in which

distributed lock manager is implemented. Some perform this at the user level and

others in the kernel, with the latter enhancing performance.

In addition to the differing features you should consider the following:

Does the cluster:

• have the ability to hot load new nodes without bringing down the

whole cluster?

• provide automatic or manual failover?

• load balance?

• use a journalized file system?

• provide a fast cluster failover?

• allow for the nodes to be geographically located?

Minimizing Downtime for Maximum Data Availability 33


34


How Available are Clusters?

The following tables outlines the maximum availability per downtime in the

different architectures:

Application of Availability

The imageRAID SCSI Series Storage System implementation of availability within

its supported topologies are as follows:

Architecture Maximum Availability Downtime per Failure Downtime per Year(in minutes)

Continuous Processing

100.00% None 0

Fault-Tolerant 99.9999% Cycles 0.5 - 5

Clusters 99.9 - 99.999% Seconds to minutes

5 - 500

High Availability 99.9% Minutes 500 - 10,000 (disk mirroring)

Stand Alone System

99.5% Hours 2,600 - 10, 000 (without disk mirroring)

Architecture Corresponding Topology

Continuous Processing Not Available

Fault-Tolerant Active-Passive:Dual Port

Cluster Active-Active:Dual Port or Single Bus Clustering

High Availability Active-Active:Single Port

Stand Alone System Stand-Alone:Dual Port

How Available are Clusters?

Chapter 3


Setup and Installation

Overview

This chapter describes the procedures to install and setup the imageRAID SCSI

Series Storage System. Each section will step you through the hardware

installation, cabling and topology configurations, and upgrades.

It is important to thoroughly review this information and perform the steps of

procedures in each applicable section, in the order in which they are presented.

This will ensure a smooth and trouble-free installation.

The installation is divided into three sections. The first section describes installing

the enclosure(s) into the rack cabinet. The second section is “Enclosure

Configuration” which describes setting the SAF-TE Disk I/O card or the SCSI

SAF-TE Cluster card switches and the enclosure-to-enclosure cabling. (These

configurations are categorized by the number of disk drives. For example, a

IRS-JBOD (single enclosure) is described as the “JBOD - 12 Drive Configuration,”

where a imageRAID IRS-1U160/IRS-2U160 with two daisy-chained IRS-JBOD

enclosures will be described as the “RAID - 36 Drive Configuration.” The third

section, “Topology Host Cabling,” describes the cabling of the primary RAID

storage enclosure to the host system(s). The topologies are based on the operating

modes: JBOD, Stand-Alone Single Port, Stand-Alone Dual Port, Active-Active

Single Port, Active-Passive Dual Port or Single Bus Clustering.

35

Chapter 3 - Setup and Installation

36


Storage System Detailed Installation

This section describes preparing and installing the imageRAID SCSI Series Storage

System enclosure(s) into the rack cabinet or the enclosure into its tower stand

(“Installing the Storage System into the Tower Stand” on page 39).

After installing the hardware components, go to the Enclosure Configuration

section and set the switches on the SAF-TE Disk I/O card and omplete the

cabling for your configuration.

Installing the Storage System Enclosure into the Rack Cabinet

1 Select an appropriate location within your rack cabinet.

Consider the location of the enclosures in relationship to each other and the

host server to ensure the cables will easily reach between them.

CAUTION: The power supplies should be removed prior to installing the

enclosure into the rack cabinet. The enclosure chassis could be

damaged during installation due to the added unbalaced weight of

the power supplies.

NOTE: Make sure the selected location in the rack cabinet has adequate air

flow for the front to side and side to side areas.

2 Remove the storage system from its shipping carton and inspect for obvious

damage.

Remove and open the accessory kit, and remove the contents. Open the left

and right flaps, and remove the bezel and mounting rails.

Remove the drives from the foam tray, then remove the foam tray from the

box.

Lift the enclosure from the box. Remove the foam from around the it and

place the enclosure on a flat surface to work from.

3 Remove the power supplies.

Grasp the power supply handle and slide the release latch to the right with

your thumb as you pull the power supply from the enclosure. Repeat for the

other power supply.

Storage System Detailed Installation



4 Locate the mounting rails and mounting hardware in the accessory kit (some

installations require cage nuts and others use standard nuts).

NOTE: It will be helpful to have an assistant available during the installation.

5 Install the rear mounting rails.

Secure the left and right mounting rail to the vertical members using the

screws and nuts provided.

Attaching the Rails

6 Lift the enclosure into the rack cabinet and align the rear mounting rails with

the slots at the rear of the enclosure sliding the enclosure onto the rails.

7 Secure each front mounting ear to the vertical member using the supplied

screws and nuts.

NOTE: Ensure the enclosure is level.

Rear Rack Vertical Member

Nut

Nut

MountingScrews

Rail Slot

Rail Slot

CTRL 1

CTRL 2

SAFTE

P-1

Tx

Rx

P-2

Tx

Rx

P-1

Tx

Rx

P-2

Tx

Rx

JP1

ADD JUMPER

TO DISABLE

TERMINATION

ADD JUMPER

TO SUPPLY

TERM POWER

JP3

JP2JP4

Channel 1

Channel 2

Channel 0

Channel 3

JP1

ADD JUMPER

TO DISABLE

TERMINATION

ADD JUMPER

TO SUPPLY

TERM POWER

JP3

JP2JP4


Installing the Storage System Enclosure into the Rack Cabinet 37


38


Attaching the Chassis Ears

8 Re-install the power supplies.

Slide each power supply into its empty bay and ensure it seats completely,

and that the release latch resets.

9 Continue now with “Completing the Installation” on page 41.

Front Rack VerticalMember

MountingScrew

Chassis Ear

Nut

Nut

MountingScrew

Installing the Storage System Enclosure into the Rack Cabinet



Installing the Storage System into the Tower Stand

1 Remove the storage system from its shipping carton and inspect for obvious

damage.

Remove and open the accessory kit, and remove the contents. Open the left

and right flaps, and remove the bezel and mounting rails.

Remove the drives from the foam tray, then remove the foam tray from the

box.

Lift the enclosure from the box. Remove the foam from around the it and

place the enclosure on a flat surface to work from.

2 Remove the power supplies.

Grasp the power supply handle and slide the release latch to the right with

your thumb as you pull the power supply from the enclosure. Repeat for the

other power supply.

3 Remove the cooling fan module.

Place your finger in the handle and slide the release latch to the right with

your thumb while pulling it from the enclosure.

4 Remove the tower stand case from its shipping carton and inspect for

obvious damage.

5 Locate the accessory kit in the tower shipping carton. It should contain eight

10-32 pan head screws and conversion instructions. (The Conversion

Instruction enclosed in the box are applicable to converting an existing rack

mount installation to a deskside tower system.)

6 Rotate the enclosure chassis so that the power supply bays are on the top.

7 Carefully slide the enclosure chassis into the tower stand until it fits flush as

indicated by (A) in the illustration on the following page.

8 Secure the top and bottom front mounting ears to the tower stand using two

each 10-32 pan head screws as indicated by (B) in the illustration on the

following page.

9 Install the rear mounting rails into the slots at the rear of the chassis as

indicated by (C) in the illustration on the following page.

Installing the Storage System into the Tower Stand 39


40


10 Secure the top and bottom slide rails using the remaining two sets (4) of

10-32 pan head screws.

Inserting and Securing the Chassis

MountingScrews

MountingScrews

MountingScrew

AB

C

Installing the Storage System into the Tower Stand



11 Re-install the cooling fan module. Slide it into its open bay and ensure it

seats completely, and the release latch resets.

12 Re-install the power supplies. Slide each power supply into its open bay and

ensure it seats completely, and the release latch resets.

13 Continue now with “Completing the Installation” on page 41.

Completing the Installation

1 Install the disk drives.

a Remove each drive from its anti-static protective packaging. Inspect for

obvious damage.

b Install each disk drive into a drive slot by aligning the drive carrier rails

with the grooves in the drive bay wall.

The drive carrier tension clips to ensure that it fits snug, so it requires

some force to seat the drive. Repeat this step to populate all the required

drive slots.

Installing Disk Drives

c Install the front bezel. The bezel mounts to the two front post stud, one

on each mounting ear, and the bezel lip fits under the chassis top.

Completing the Installation 41


42


d Secure the front bezel using a Phillips screwdriver by rotating the

fasteners clockwise one-quarter turn.

Attaching the Front Bezel (Rack and Tower Models)

CAUTION: Verify that the power supply On/Off switches are in their OFF

position.

2 (AC Power Supplies Only) Install the power cords and secure them using the

power cord bales.

NOTE: For DC Power Supplies, skip to “Cabling the DC Power Supplies” on

page 43.

a Ensure that the orientation is such that when the power cord is inserted,

the bale will be on top of the cord and will fit over and onto the cord.

Reset Alarm

RES

ET A

LAR

M

Completing the Installation



Attaching the Power Cord Bales

b Connect the other end of the power cord into a three-hole grounded

outlet or UPS power system. A UPS is highly recommended.

c Repeat steps 2(a) and 2(b) for the other power cord.

NOTE: For DC Power Supply Systems refer to Cabling the DC Power

Supplies below.

3 Repeat the above steps for each additional storage system enclosure you will

be installing.

This completes the physical hardware installation.

Cabling the DC Power Supplies

NOTE: Refer to “DC Power Supply Connector Pinout” on page 90 for wiring and

connector details.

If you are using the DC Power Supply system, refer to the following procedures

to properly connect the cables.

1 Plug the connector into the power supply, it is keyed to install only one way.

2 Connect the two Red pair wires to the DC Feed +48VDC connection.

3 Connect the two Green/Yellow pair wires to the DC Feed ground

connection.

4 Connect the two Black pair wires to the DC Feed -48VDC connection.

Bale fits over and onto the power cord.

Cabling the DC Power Supplies 43


44


Attaching the DC Cable

5 Repeat the above steps (1 - 4) for the second power supply, if this option

was ordered.

This completes the physical hardware installation.

Red (2x)

Red (2x)Top two pair

Black (2x)

Black (2x)Middle two pair

Green/Yellow (2x)

Green/Yellow (2x)Bottom two pair

Cabling the DC Power Supplies



Before You Continue...

The next section, Enclosure Configuration, includes steps and diagrams for

setting the SAF-TE Disk I/O card/SCSI SAF-TE Cluster card switches and attaching

the required SCSI data cables for each drive configuration. Locate the applicable

configuration and refer to the steps and diagrams to set the card switches and

cable your system.

The Topology Host Cabling section includes steps and diagrams for cabling the

primary RAID storage enclosure to the host computer(s). Review the procedure

steps, then locate the applicable topology and cable your system based on the

diagrams.




The last section of this chapter provides the steps to properly power on or power

off your storage system.

Special Note for Microsoft Windows 2000/2003 Installations

At startup you will see the “Found New Hardware Wizard” appear. Although a

driver is not required for the storage system, a driver .inf file is provided on the

Software/Documentation Disc which is installed to satisfy this requirement.

Refer to the ReadMe file located in the Drivers directory on the Software/

Documentation Disc for instructions, then follow the on screen wizard to

complete the driver installation.

Before You Continue... 45


46


Enclosure Configuration

In this section, configurations are determined by the enclosure model type

(IRS-JBOD or imageRAID IRS-1U160/IRS-2U160), SCSI bus configuration, number

of enclosures and the available number of drives. Follow the steps of procedure for

your configuration to set the switches, jumpers, and connect the SCSI data cables.

imageRAID IRS-JBOD - 12 Drive Configuration

The IRS-JBOD can be setup as a Single-Bus or a Dual-Bus JBOD (Just a Bunch of

Drives) configuration using a single enclosure which provides up to a 12 disk

drive storage solution.

Logical View of Drive Connectivity - Single-Bus Mode

In Single-Bus Mode, Channel 1 on the SAF-TE Disk I/O card assesses all the

drives 1 through 12. In this mode, a “Single-Bus Module” must be installed in the

Controller 1 slot. This Single-Bus Module connects Channel 1 and Channel 2

creating a single continuous SCSI bus.

Logical View of Drive Connectivity - Dual-Bus Mode

Connectors

Single BusModule

SEP


(autosense allows the physical connection

to disable termination)

T

T

T

T

SCSI SAF-TE Clustering Card/SAF-TE Disk I/O Card

Drives 7 - 12

Drives 1 - 6

CH 1CH 2

HostHost

SEP

SBE

SBE


SEP




T

T

SAF-TE Disk I/O

Drives 7 - 12

Drives 1 - 6

CH 1CH 2

SEP

T

T

Enclosure Configuration



In Dual-Bus Mode, the Channel 1 connector on the SAF-TE Disk I/O card

provides access to drives 1 through 6 and the Channel 2 connector provides

access to drives 7 through 12.

NOTE: In the preceding logical view diagrams, the drive slots are used to

indicate which drives are connected to which channel. They should not

be confused with the disk drive SCSI IDs. Those IDs are pre-determined

by the SCSI Disk I/O card switch settings.

1 Remove the SAF-TE Disk I/O card installed in the enclosure. Loosen the two

thumb screws and pull the card from its slot location.

2 Locate the switches on the card and set them as described in the switch

setting diagrams.

Some configurations have multiple switch setting options available, choose

the setting that is appropriate for your system.

SAF-TE Disk I/O Card Switch and Jumper Locations

There is one switch setting for Single-Bus mode and two possible settings for

Dual-Bus mode. Refer to the switch setting appropriate for your

configuration and set the switches accordingly. (Refer to the illustrations on

the following page.)

JP7

ADD JUMPER

TO DISABLE

TERMINATION

JP8

CNFG 1CNFG 2RAID

SPARE 1SPARE 2

BAUD SELDLY STRT

RMT STRT

ADD JUMPER

TO DISABLE

TERMINATION

CHANNEL -1

CHANNEL -2

RD

A0

1 2 3 4 5 6 7 8

A1

S0

S1

BD

DL

RM

UP



Channel 1

Channel 2

DOWN

Confi

gurat

ion1

Confi

gurat

ion2

RAID

Spare

1Sp

are2

BAUD

Rate

Selec

t

Delay

Drive

Star

t

Remote

Drive

Star

t

imageRAID IRS-JBOD - 12 Drive Configuration 47


48


Single-Bus JBOD Switch Setting

Dual-Bus JBOD Switch Setting - Option 1

Dual-Bus JBOD Switch Setting - Option 2

3 Re-install the SAF-TE Disk I/O card. Slide the card into the slot and ensure

that it seats completely. Secure the card by tighten the two thumb screws.

RD

A0

1 2 3 4 5 6 7 8

A1

S0

S1

BD

DL

RM

Swi tch Set t ingsID 1

Slo t 1

S lo t 2

S lo t 4

S lo t 5

S lo t 7

S lo t 8

S lo t 10

S lo t 11

ID 2

ID 3 ID 4

ID 9 ID 10

ID 11 ID 12

Slo t 3 S lo t 6 S lo t 9 S lo t 12ID 5 ID 6 ID 13 ID 14UP (1)

DOWN (0) Dr ive IDs o f the Dr ive S lo ts (Dr ive Channe l S ide)

SAF-TE ID = 15

Sing le -Bus Mode

RD

A0

1 2 3 4 5 6 7 8

A1

S0

S1

BD

DL

RM

Swi tch Set t ings ID 1Slo t 1

S lo t 2

S lo t 4

S lo t 5

S lo t 7

S lo t 8

S lo t 10

S lo t 11

ID 2

ID 3 ID 4

Slo t 3 S lo t 6 S lo t 9 S lo t 12ID 5 ID 6

ID 1 ID 2

ID 3 ID 4

ID 5 ID 6UP (1)


SAF-TE ID = 15 /15Host HBA ( ID 0 o r 7 ) Dua l -Bus Mode

RD

A0

1 2 3 4 5 6 7 8

A1

S0

S1

BD

DL

RM


S lo t 2

S lo t 4

S lo t 5

S lo t 7

S lo t 8

S lo t 10

S lo t 11

ID 10

ID 11 ID 12


ID 9 ID 10

ID 11 ID 12

ID 13 ID 14UP (1)


SAF-TE ID = 15 /15Host HBA ( ID 0 o r 7 ) Dua l -Bus Mode




4 (Single-Bus Mode Installations Only) Install the Single-Bus Module in the

Controller 1 slot.

a Remove the Controller Cover plate. Loosen the four thumb screws and

pull the cover plate from the enclosure.

Single-Bus Module Installation

b Slide the Single-Bus Module in the Controller 1 (lower) slot, and secure it

by pressing the latches into place.

c Re-install the Controller Cover plate. Tighten the four thumb screws, do

not overtighten.

5 Connect the SCSI data cable(s) from the host system HBAs to the SAF-TE

Disk I/O card Channel connector(s). Refer to the diagrams on the following

page for cabling details for each mode.

JP7

ADD JUMPER

TO DISABLE

TERMINATION

ADD JUMPER

TO SUPPLY

TERM POWER

JP6

JP5

CNFG 1CNFG 2RAID

SPARE 1SPARE 2

BAUD SELDLY STRT

RMT STRT

JP8ADD JUMPER

TO DISABLE

TERMINATION

ADD JUMPER

TO SUPPLY

TERM POWER

CHANNEL -1

CHANNEL -2

JP1

ADD JUMPER

TO DISABLE

TERMINATION

ADD JUMPER

TO SUPPLY

TERM POWER

JP3

JP2JP4

JP1

ADD JUMPER

TO DISABLE

TERMINATION

ADD JUMPER

TO SUPPLY

TERM POWER

JP3

JP2JP4

Cover Plate

Single-BusModule



50


Cabling Diagrams JBOD Single Enclosure - Single-Bus Mode

Cabling Diagrams JBOD Single Enclosure - Dual-Bus Mode

This completes the imageRAID IRS-JBOD - 12 Drive Configuration setup, refer to

“Powering On the Storage System” on page 80. Follow your operating system

requirements for preparing new disk drives.

SCSI Data Cable

Ethernet Cables Ethernet Cables

Switches

SCSI Data Cable

SAFTE Disk I/O

Host Computer

imageRAID IRS-JBOD

Chl 1

Ctlr 1 Ctlr 2SAF-TE

Chl 2

Single BusModule

PowerSupply

PowerSupply

CoolingFans

Host Computer

SCSI Data Cable

SCSI Data Cable

SAFTE Disk I/O

Host Computer

imageRAID IRS-JBODDual-Bus Mode

Chl 1

Ctlr 1 Ctlr 2SAF-TE

Chl 2

PowerSupply

PowerSupply

CoolingFans





The imageRAID IRS-JBOD can also be setup as a Single-Bus JBOD (Just a Bunch

of Drives) configuration with two enclosure which will provide up to a 24 disk

drive (12 per channel) storage solution. In this configuration you can have a

single host system with a single HBA that has dual independent ports or a single

host system with two single port HBAs.

In this configuration both enclosures will be in single-bus mode. Channel 1 on

the SAF-TE Disk I/O card will assess all of the drives 1 through 12. A Single-Bus

Module must be installed in the Controller 1 slot. This Single-Bus Module

connects Channel 1 and Channel 2 together to create a single continuous SCSI

bus.

Logical View of Connectivity - Single-Bus Mode

NOTE: In the preceding logical diagram, the drive slots are used to indicate

which drives are connected to which channel. They should not be

confused with the disk drive SCSI IDs. Those IDs are pre-determined by

the SCSI Disk I/O card switch settings.

1 Remove the SAF-TE Disk I/O card installed in both enclosures. Loosen the

two thumb screws and pull the card from its slot location.

2 Locate the switches on each card and set them as described in the switch

setting diagram.

Connectors

Single BusModule

SEP




T

T

T

T


Drives 7 - 12

Drives 1 - 6

CH 1CH 2

HostHost

SEP

SBE

SBE



52



There is one switch setting for both enclosures.

Single-Bus JBOD Switch Setting

3 Re-install the SAF-TE Disk I/O card in each enclosure. Slide the card into the

slot and ensure that it seats completely. Secure the card by tighten the two

thumb screws.

4 Install the Single-Bus Module in the Controller 1 slot in both enclosures.

a Remove the Controller Cover plate. Loosen the four thumb screws and

pull the cover plate from the enclosure.



c Re-install the Controller Cover plate. Tighten the four thumb screws, do

not overtighten. Repeat for the second enclosure.

JP7

ADD JUMPER

TO DISABLE

TERMINATION

JP8

CNFG 1CNFG 2RAID

SPARE 1SPARE 2

BAUD SELDLY STRT

RMT STRT

ADD JUMPER

TO DISABLE

TERMINATION

CHANNEL -1

CHANNEL -2

RD

A0

1 2 3 4 5 6 7 8

A1

S0

S1

BD

DL

RM

UP



Channel 1

Channel 2

DOWN

Confi

gurat

ion1

Confi

gurat

ion2

RAID

Spare

1Sp

are2

BAUD

Rate

Selec

t

Delay

Drive

Star

t

Remote

Drive

Star

t

RD

A0

1 2 3 4 5 6 7 8

A1

S0

S1

BD

DL

RM


Slo t 1

S lo t 2

S lo t 4

S lo t 5

S lo t 7

S lo t 8

S lo t 10

S lo t 11

ID 2

ID 3 ID 4

ID 9 ID 10

ID 11 ID 12



SAF-TE ID = 15

Sing le -Bus Mode




NOTE: Refer to the illustration “Single-Bus Module Installation” on page 49.

5 Connect a SCSI data cable from the host system HBA(s) to the SAF-TE Disk

I/O card Channel 1 connectors on each enclosure.

Cabling Diagram JBOD Dual Enclosures

This completes the imageRAID IRS-JBOD - 24 Drive Configuration setup, refer to

“Powering On the Storage System” on page 80. Follow your operating system

requirements for preparing new disk drives.

SAFTE Disk I/O

imageRAID IRS-JBODSingle-Bus Mode

Chl 1

Ctlr 1 Ctlr 2SAF-TE

Chl 2

Single BusModule

PowerSupply

PowerSupply

CoolingFans

SAFTE Disk I/O

imageRAID IRS-JBODSingle-Bus Mode

Chl 1

Ctlr 1 Ctlr 2SAF-TE

Chl 2

Single BusModule

PowerSupply

PowerSupply

CoolingFans

SCSI Data Cable

SCSI Data Cable

Host Computer



54


imageRAID IRS-1U160/IRS-2U160 - 12 Drive Configuration

The imageRAID Storage System can be setup to provide up to a 12 disk drive

storage solution using the primary RAID enclosure only.

1 Remove the SAF-TE Disk I/O card installed in the enclosure. Loosen the two

thumb screws and pull the card from its slot location.


2 Locate the switches on the card and set them as described in the following

switch setting diagrams.

There are two possible switch settings for this configuration.

Switch Setting - Option 1

JP7

ADD JUMPER

TO DISABLE

TERMINATION

JP8

CNFG 1CNFG 2RAID

SPARE 1SPARE 2

BAUD SELDLY STRT

RMT STRT

ADD JUMPER

TO DISABLE

TERMINATION

CHANNEL -1

CHANNEL -2

RD

A0

1 2 3 4 5 6 7 8

A1

S0

S1

BD

DL

RM

UP



Channel 1

Channel 2

DOWN

Confi

gurat

ion1

Confi

gurat

ion2

RAID

Spare

1Sp

are2

BAUD

Rate

Selec

t

Delay

Drive

Star

t

Remote

Drive

Star

t

RD

A0

1 2 3 4 5 6 7 8

A1

S0

S1

BD

DL

RM


S lo t 2

S lo t 4

S lo t 5

S lo t 7

S lo t 8

S lo t 10

S lo t 11

ID 2

ID 3 ID 4


ID 1 ID 2

ID 3 ID 4

ID 5 ID 0UP (1)


SAF-TE ID = 8 /8RAID Cont ro l le rs = 6 & 7 Dua l -Bus Mode




Switch Setting - Option 2

The switch settings will assign specific SCSI IDs to the drive slots as

indicated, and reserve IDs 6 and 7 for the RAID Controller(s), and IDs 8 or 15

for the SAF-TE processors.

3 Re-install the SAF-TE Disk I/O card. Slide the card into the slot and ensure

that it seats completely. Secure the card by tighten the two thumb screws.

4 Connect a SCSI data cable(s) from the host system(s) HBA(s) to the Host I/O

card as indicated in “Topology Host Cabling” on page 63.

This completes the imageRAID IRS-1U160/IRS-2U160 -12 Drive Configuration

setup, refer to “Topology Host Cabling” on page 63 and “Powering On the

Storage System” on page 80. Also, refer to the AdminiStor software guide or the

VT-100 software guide for instructions on setting up and configuring the disk

arrays.

RD

A0

1 2 3 4 5 6 7 8

A1

S0

S1

BD

DL

RM


S lo t 2

S lo t 4

S lo t 5

S lo t 7

S lo t 8

S lo t 10

S lo t 11

ID 10

ID 11 ID 12


ID 9 ID 10

ID 11 ID 12

ID 13 ID 14UP (1)


SAF-TE ID = 15 /15RAID Cont ro l le rs = 6 & 7

Dua l -Bus Mode

imageRAID IRS-1U160/IRS-2U160 - 12 Drive Configuration 55


56



The imageRAID Storage System can be setup to provide up to a 24 disk drive

storage solution (12 per channel).

1 Remove the SAF-TE Disk I/O card installed in the primary RAID enclosure.

Loosen the two thumb screws and pull the card from its slot location.



switch setting diagram.




Switch Setting - Primary RAID Enclosure (IRS-1U160xx-xx/IRS-2U160xx-xx)

JP7

ADD JUMPER

TO DISABLE

TERMINATION

JP8

CNFG 1CNFG 2RAID

SPARE 1SPARE 2

BAUD SELDLY STRT

RMT STRT

ADD JUMPER

TO DISABLE

TERMINATION

CHANNEL -1

CHANNEL -2

RD

A0

1 2 3 4 5 6 7 8

A1

S0

S1

BD

DL

RM

UP



Channel 1

Channel 2

DOWN

Confi

gurat

ion1

Confi

gurat

ion2

RAID

Spare

1Sp

are2

BAUD

Rate

Selec

t

Delay

Drive

Star

t

Remote

Drive

Star

t

RD

A0

1 2 3 4 5 6 7 8

A1

S0

S1

BD

DL

RM


S lo t 2

S lo t 4

S lo t 5

S lo t 7

S lo t 8

S lo t 10

S lo t 11

ID 2

ID 3 ID 4


ID 1 ID 2

ID 3 ID 4

ID 5 ID 0UP (1)






3 Re-install the SAF-TE Disk I/O card into the primary RAID enclosure. Slide

the card into the slot and ensure that it seats completely. Secure the card by

tighten the two thumb screws.

4 Remove the SAF-TE Disk I/O card installed in the daisy-chain enclosure

(imageRAID IRS-JBOD). Loosen the two thumb screws and pull the card

from its slot location.

The daisy-chain enclosure will be configured to dual-bus mode. This

provides the drive channel expansion from the primary enclosures’ Disk I/O

channels. Set the switches as described in the following diagram.

Switch Setting - Dual-Bus Daisy-Chain Enclosure (IRS-JBOD)

5 (Daisy-chain enclosure - IRS-JBOD Only) Change the jumper settings on the

SAF-TE Disk I/O card JP7 and JP8 as described.

Locate and configure the two jumpers (JP7 and JP8), refer to the illustration

on the previous page. Add a jumper (installed on both pins) to JP8 for

Channel 1 and JP7 for Channel 2.

This will ensure that the automatic termination feature functions properly.

6 Re-install the SAF-TE Disk I/O card into the daisy-chain enclosure. Slide the

card into the slot and ensure that it seats completely. Secure the card by


7 Connect the SCSI data cables from the imageRAID IRS-1U160/IRS-2U160

enclosure to the imageRAID IRS-JBOD enclosures’ SAF-TE Disk I/O card as

indicated in the following cabling diagram.

RD

A0

1 2 3 4 5 6 7 8

A1

S0

S1

BD

DL

RM


S lo t 2

S lo t 4

S lo t 5

S lo t 7

S lo t 8

S lo t 10

S lo t 11

ID 10

ID 11 ID 12


ID 9 ID 10

ID 11 ID 12

ID 13 ID 14UP (1)



Dua l -Bus Mode

imageRAID IRS-1U160/IRS-2U160 - 24 Drive Configuration 57


58


Enclosure Cabling Diagram

8 Connect a SCSI data cable(s) from the host system(s) HBA(s) to the Host I/O

card as indicated in “Topology Host Cabling” on page 63.

This completes the imageRAID IRS-1U160/IRS-2U160 - 24 Drive Configuration

setup, refer to “Topology Host Cabling” on page 63 and “Powering On the

Storage System” on page 80. Also refer to the AdminiStor software guide or the

VT-100 software guide for instructions on setting up and configuring the disk

arrays.

SAFTE Disk I/O

SCSI Data Cable SCSI Data Cable

Chl 1

Ctlr 1 Ctlr 2SAF-TE

Chl 2

PowerSupply

PowerSupply

CoolingFans

SAFTE Disk I/O

imageRAID IRS-JBOD

imageRAID IRS-1U160

Chl 1

Ctlr 1 Ctlr 2SAF-TE

Chl 2

Chl 0 Chl 3

Chl 0 Chl 3

I/O

RAID Controller

PowerSupply

PowerSupply

CoolingFans

Host I/O




imageRAID IRS-1U160 - 36 Drive Configuration

Only the imageRAID IRS-1U160 model Storage System can be setup in this

Stand-Alone Single Port mode configuration. It provides up to a 36 disk drive

storage solution (12 per channel). This is due to one of the Host SCSI I/O ports

(CH 3) is used as a drive channel to provide the additional connectivity for the

second imageRAID IRS-JBOD enclosure.

1 Remove the SAF-TE Disk I/O card installed in the primary RAID enclosure.

Loosen the two thumb screws and pull the card from its slot location.







Switch Setting - Primary RAID Enclosure (IRS-1U160xx-xx)

JP7

ADD JUMPER

TO DISABLE

TERMINATION

JP8

CNFG 1CNFG 2RAID

SPARE 1SPARE 2

BAUD SELDLY STRT

RMT STRT

ADD JUMPER

TO DISABLE

TERMINATION

CHANNEL -1

CHANNEL -2

RD

A0

1 2 3 4 5 6 7 8

A1

S0

S1

BD

DL

RM

UP



Channel 1

Channel 2

DOWN

Confi

gurat

ion1

Confi

gurat

ion2

RAID

Spare

1Sp

are2

BAUD

Rate

Selec

t

Delay

Drive

Star

t

Remote

Drive

Star

t

RD

A0

1 2 3 4 5 6 7 8

A1

S0

S1

BD

DL

RM


S lo t 2

S lo t 4

S lo t 5

S lo t 7

S lo t 8

S lo t 10

S lo t 11

ID 2

ID 3 ID 4


ID 1 ID 2

ID 3 ID 4

ID 5 ID 0UP (1)



imageRAID IRS-1U160 - 36 Drive Configuration 59


60


3 Re-install the SAF-TE Disk I/O card in the primary RAID enclosure. Slide the

card into the slot and ensure that it seats completely. Secure the card by


4 Remove the SAF-TE Disk I/O card installed in the first daisy-chain enclosure

(imageRAID IRS-JBOD). Loosen the two thumb screws and pull the card

from its slot location.

The first daisy-chain enclosure will be configured to dual-bus mode. This

provides the drive channel expansion from the primary enclosures’ Disk I/O

channels. Set the switches as described in the following diagram.

Switch Setting - Dual-Bus Daisy-Chain Enclosure (IRS-JBOD)

5 Configure the jumper settings on this first daisy-chain enclosure SAF-TE Disk

I/O card.

Locate and add (installed on both pins) the two jumpers at JP7 and JP8, refer

to the illustration on the previous page. The default position of the jumpers

are offset (installed on one pin only).

This will ensure that the automatic termination feature functions properly.

6 Re-install the SAF-TE Disk I/O card into the first daisy-chain enclosure. Slide

the card into the slot and ensure that it seats completely. Secure the card by


7 Remove the SAF-TE Disk I/O card installed in the second daisy-chain

enclosure (imageRAID IRS-JBOD). Loosen the two thumb screws and pull

the card from its slot location.



9 Configure the jumper settings on this second daisy-chain enclosure SAF-TE

Disk I/O card.

RD

A0

1 2 3 4 5 6 7 8

A1

S0

S1

BD

DL

RM


S lo t 2

S lo t 4

S lo t 5

S lo t 7

S lo t 8

S lo t 10

S lo t 11

ID 10

ID 11 ID 12


ID 9 ID 10

ID 11 ID 12

ID 13 ID 14UP (1)



Dua l -Bus Mode




Switch Setting - Single-Bus Daisy-Chain Enclosure (IRS-JBOD)

Locate and add (installed on both pins) the two jumpers at JP7 and JP8. The

default position of the jumpers are offset.

10 Re-install the SAF-TE Disk I/O card into the second daisy-chain enclosure.

Slide the card into the slot and ensure that it seats completely. Secure the

card by tighten the two thumb screws.

11 Connect the SCSI data cables from the imageRAID IRS-1U160 to the

imageRAID IRS-JBOD enclosures as indicated in the following cabling

diagram.

Enclosure Cabling Diagram

RD

A0

1 2 3 4 5 6 7 8

A1

S0

S1

BD

DL

RM

Swi tch Set t ings

UP (1)

DOWN (0)

SAF-TE ID = 15RAID Cont ro l le rs = 6 & 7

ID 1Slo t 1

S lo t 2

S lo t 4

S lo t 5

S lo t 7

S lo t 8

S lo t 10

S lo t 11

ID 2

ID 3 ID 4

ID 9 ID 10

ID 11 ID 12

Slo t 3 S lo t 6 S lo t 9 S lo t 12ID 5 ID 0 ID 13 ID 14

Dr ive IDs o f the Dr ive S lo ts (Dr ive Channe l S ide)

S ing le -Bus Mode

SAFTE Disk I/O


SCSI Data Cable

Chl 1

Ctlr 1 Ctlr 2SAF-TE

Chl 2

PowerSupply

PowerSupply

CoolingFans

SAFTE Disk I/O

imageRAID IRS-JBOD

SAFTE Disk I/OChl 1

Ctlr 1 Ctlr 2SAF-TE

Chl 2

PowerSupply

PowerSupply

CoolingFans

imageRAID IRS-JBOD

imageRAID IRS-1U160

Chl 1

Ctlr 1 Ctlr 2SAF-TE

Chl 2

Chl 0 Chl 3

Chl 0 Chl 3

Host I/O

RAID Controller

Single Bus

Module

PowerSupply

PowerSupply

CoolingFans

Host I/O

imageRAID IRS-1U160 - 36 Drive Configuration 61


62


12 Connect a SCSI data cable(s) from the host system(s) HBA(s) to the Host SCSI

I/O card as indicated in “Topology Host Cabling” on page 63.

This completes the imageRAID IRS-1U160 - 36 Drive Configuration setup, refer to

“Topology Host Cabling” on page 63 and “Powering On the Storage System” on

page 80. Also, refer to the AdminiStor software guide or the VT-100 software

guide for instructions on setting up and configuring the disk arrays.




Topology Host Cabling

This section provides instructions for the physical cabling between the primary

imageRAID enclosure and your host system(s). The topologies are determined by

the number of imageRAID Controllers installed and the operating modes of the

imageRAID Controllers. Refer to “Theory of Controller Operation” on page 21 for

detailed information describing each operating mode.




Basic Connection Instructions

1 Install your host bus adapter(s) into the host system(s). Refer to your HBA

user’s guide and any applicable nStor Attach Kit for specific details.

2 For multiple LUN support, ensure that your host operating system is properly

configured to support this feature. Refer to your host operating system user’s

guide for information on how to perform this procedure.

3 Connect the SCSI data cables. Refer to the topology described for your

solution on the following pages, and cable your system based on the

diagrams shown.

a Connect the required SCSI data cable(s) to the host system’s SCSI host

bus adapter port connector(s).

b Connect the other end of those SCSI data cable(s) to the storage

enclosure Host Channel ports on the Host SCSI I/O card(s) as indicated.

4 Continue now with “Powering On the Storage System” on page 80.

5 After powering up all the system(s), you may need to set the operating mode.

By default the imageRAID Controller’s operating mode are set to

“Active-Active Single Port.” Access the AdminiStor software or VT-100

on-board software and make the necessary changes to the operating mode.

The selections will be:

• Stand-Alone Single Port

• Stand-Alone Dual Port

• Active-Active Single Port

• Active-Passive Dual Port

6 Using either AdminiStor or VT-100, configure the disk arrays as desired.

Topology Host Cabling 63


64


Stand-Alone Single Port:Host Cabling

This topology is chosen when the desired application requires a low cost entry

level, fault-tolerant disk storage solution. This solution provides a single controller

configuration that supports a single or dual host(s), and up to three disk channels.

Setup for a Single Host (One HBA)

Connect the SCSI data cables as described in the following diagrams.

Stand-Alone Single Port Logical Diagram

Host Cabling Diagram - Single Host with a Single HBA

T

Host I/O Connectors

Host SystemHBA 1



T SEP

T


T

T

T

T

T


DiskCH1

Drives 7 - 12

Drives 1 - 6

DiskCH2

(CH3)

(CH0)CH 0

CH 3

CH

1C

H 2

CH 0

CH 3

Active

I/O Card

I/O Card

DiskChannel


SEP

SCSI Data Cable

SAFTE Disk I/O

Host Computer

imageRAID IRS-1U160

Chl 1

Ctlr 1 Ctlr 2SAF-TE

Chl 2

Chl 0 Chl 3

Chl 0 Chl 3

I/O

RAID Controller

PowerSupply

PowerSupply

CoolingFans

I/O

Stand-Alone Single Port:Host Cabling



Setup for a Dual Hosts (Single HBAs)


Stand-Alone Single Port Logical Diagram

Host Cabling Diagram - Dual Host (Single HBAs)

T

Host I/O Connectors

Host System #!HBA 1



T SEP

T


T

T

T

T

T


DiskCH1

Drives 7 - 12

Drives 1 - 6

DiskCH2

(CH3)

(CH0)CH 0

CH 3

CH

1C

H 2

CH 0

CH 3

Active

I/O Card

I/O Card

DiskChannel


SEP

Host System #2HBA 1

SCSI Data CableSCSI Data Cable

SAFTE Disk I/O

Host Computer #1 Host Computer #2

imageRAID IRS-1U160

Chl 1

Ctlr 1 Ctlr 2SAF-TE

Chl 2

Chl 0 Chl 3

Chl 0 Chl 3

I/O

RAID Controller

PowerSupply

PowerSupply

CoolingFans

I/O

Stand-Alone Single Port:Host Cabling 65


66


Stand-Alone Dual Port:Host Cabling

This topology is chosen when the desired application requires a low cost

high-performance, fault-tolerant disk storage solution with multiple paths to

storage. This solution provides a single controller configuration that supports

multiple or dual ported access to one or more host system computers.

Setup for a Single Host (Two HBAs)


Stand-Alone Dual Port Logical Diagram

Host Cabling Diagram - Single Host (Two HBAs)

T

Host I/O Connectors

Host System #1HBA 1



T SEP

T


T

T

T

T

T


DiskCH1

Drives 7 - 12

Drives 1 - 6

DiskCH2

(CH3)

(CH0)CH 0

CH 3

CH

1C

H 2

CH 0

CH 3

Active

Active

I/O Card

I/O Card


SEP

Host System #1HBA 2


SAFTE Disk I/O

Host Computer #1

imageRAID IRS-1U160

Chl 1

Ctlr 1 Ctlr 2SAF-TE

Chl 2

Chl 0 Chl 3

Chl 0 Chl 3

I/O

RAID Controller

PowerSupply

PowerSupply

CoolingFans

I/O




Setup for a Dual Hosts (Single HBAs)




T

Host I/O Connectors

Host System #1HBA 1



T SEP

T


T

T

T

T

T


DiskCH1

Drives 7 - 12

Drives 1 - 6

DiskCH2

(CH3)

(CH0)CH 0

CH 3

CH

1C

H 2

CH 0

CH 3

Active

Active

I/O Card

I/O Card


SEP

Host System #2HBA 1


SAFTE Disk I/O


imageRAID IRS-1U160

Chl 1

Ctlr 1 Ctlr 2SAF-TE

Chl 2

Chl 0 Chl 3

Chl 0 Chl 3

I/O

RAID Controller

PowerSupply

PowerSupply

CoolingFans

I/O

Stand-Alone Dual Port:Host Cabling 67


68


Setup for a Dual Host - Quad Cabling (Two HBAs) - Shared SCSI Bus



Host Cabling Diagram - Dual Host - Quad Cabling (Two HBAs)

T

Host I/O Connectors

Host System #1HBA 1



T SEP

T


T

T

T

T

T


DiskCH1

Drives 7 - 12

Drives 1 - 6

DiskCH2

(CH3)

(CH0)CH 0

CH 3

CH

1C

H 2

CH 0

CH 3

Active

Active

I/O Card

I/O Card


SEP

Host System #1HBA 2

Host System #2HBA 1

Host System #2HBA 2



SAFTE Disk I/O


imageRAID IRS-1U160

Chl 1

Ctlr 1 Ctlr 2SAF-TE

Chl 2

Chl 0 Chl 3

Chl 0 Chl 3

I/O

RAID Controller

PowerSupply

PowerSupply

CoolingFans

I/O




Active-Active Single Port:Host Cabling

This topology is chosen when the desired application requires a high-performance

robust full system level fault-tolerant disk storage solution and transparent

controller failover/failback. This dual controller configuration supports a host

with a single port HBA and is ideal when the host driver software will not

support LUNs that appear twice.

Setup for Single Host (One HBA)


Active-Active Single Port Logical Diagram

Host Cabling Diagram - Single Host (One HBA)

Host I/O Connectors

Jum

per C

able




SEP



DiskCH1

DiskCH2

(CH3)

(CH0)CH 0

CH 3

CH

1C

H 2

CH 0

CH 3

Passive

I/O Card

I/O Card

Active

Controller 2

DiskCH1

DiskCH2

(CH3)

(CH0) Passive

Active

SEP

T

T

T

T

T

T

T

T

Drives 7 - 12

Drives 1 - 6


RAID Controller

RAID Controller

SCSI Data Cable

SCSI Jumper Cable

SAFTE Disk I/O

imageRAID IRS-2U160

Chl 1

Ctlr 1 Ctlr 2SAF-TE

Chl 2

Chl 0 Chl 3

Chl 0 Chl 3

I/O

RAID Controller

RAID ControllerPowerSupply

PowerSupply

CoolingFans

I/O

Host Computer

Active-Active Single Port:Host Cabling 69


70


Setup for Single Host (Two HBAs)




Host I/O Connectors




SEP



DiskCH1

DiskCH2

(CH3)

(CH0)CH 0

CH 3

CH

1C

H 2

CH 0

CH 3

Passive

I/O Card

I/O Card

Active

Controller 2

DiskCH1

DiskCH2

(CH3)

(CH0) Passive

Active

SEP

T

T

T

T

T

T

T

T

Drives 7 - 12

Drives 1 - 6


RAID Controller

RAID Controller


SCSI Data Cable

SCSI Data Cable

SAFTE Disk I/O

Host Computer

imageRAID IRS-2U160

Chl 1

Ctlr 1 Ctlr 2SAF-TE

Chl 2

Chl 0 Chl 3

Chl 0 Chl 3

I/O RAID Controller

RAID Controller

PowerSupply

PowerSupply

CoolingFans

I/O




Setup for Dual Host (Single HBAs)




Host I/O Connectors




SEP



DiskCH1

DiskCH2

(CH3)

(CH0)CH 0

CH 3

CH

1C

H 2

CH 0

CH 3

Passive

I/O Card

I/O Card

Active

Controller 2

DiskCH1

DiskCH2

(CH3)

(CH0) Passive

Active

SEP

T

T

T

T

T

T

T

T

Drives 7 - 12

Drives 1 - 6


RAID Controller

RAID Controller



SAFTE Disk I/O


imageRAID IRS-2U160

Chl 1

Ctlr 1 Ctlr 2SAF-TE

Chl 2

Chl 0 Chl 3

Chl 0 Chl 3

I/O

RAID Controller


PowerSupply

CoolingFans

I/O



72


Setup for Dual Host -Dual HBAs (Quad Cabling)

This setup will provide an isolated SCSI bus. Connect the SCSI data cables as

described in the following diagrams.


Host Cabling Diagram - Dual Host - Dual HBAs

Host I/O Connectors




SEP



DiskCH1

DiskCH2

(CH3)

(CH0)CH 0

CH 3

CH

1C

H 2

CH 0

CH 3

Passive

I/O Card

I/O Card

Active

Controller 2

DiskCH1

DiskCH2

(CH3)

(CH0) Passive

Active

SEP

T

T

T

T

T

T

T

T

Drives 7 - 12

Drives 1 - 6


RAID Controller

RAID Controller






SAFTE Disk I/O


imageRAID IRS-2U160

Chl 1

Ctlr 1 Ctlr 2SAF-TE

Chl 2

Chl 0 Chl 3

Chl 0 Chl 3

I/O

RAID Controller


PowerSupply

CoolingFans

I/O




Setup for Dual Host -Dual HBAs (Quad Cabling)

This setup is ideal for clustering configurations. Connect the SCSI data cables as

described in the following diagrams.


Host Cabling Diagram - Dual Host - Dual HBAs

Host I/O Connectors




SEP



DiskCH1

DiskCH2

(CH3)

(CH0)CH 0

CH 3

CH

1C

H 2

CH 0

CH 3

Passive

I/O Card

I/O Card

Active

Controller 2

DiskCH1

DiskCH2

(CH3)

(CH0) Passive

Active

SEP

T

T

T

T

T

T

T

T

Drives 7 - 12

Drives 1 - 6


RAID Controller

RAID Controller




SCSI Data Cable

SCSI Data Cable

SCSI Data Cable

HBA 1HBA 2 HBA 1HBA 2

SCSI Data Cable

SAFTE Disk I/O


imageRAID IRS-2U160

Chl 1

Ctlr 1 Ctlr 2SAF-TE

Chl 2

Chl 0 Chl 3

Chl 0 Chl 3

I/O

RAID Controller


PowerSupply

CoolingFans

I/O



74


Active-Passive Dual Port:Host Cabling

This topology is chosen when the desired application requires a high-performance

robust full system level fault-tolerant disk storage solution. This dual controller

configuration supports multiple hosts and failover and failback operations. All

LUNs are available to all hosts.

Setup for Single Host (Two HBAs)


Active-Passive Dual Port Logical Diagram


Host I/O Connectors





SEP



DiskCH1

DiskCH2

(CH3)

(CH0)CH 0

CH 3

CH

1C

H 2

CH 0

CH 3

I/O Card

I/O Card

Active

Controller 2

DiskCH1

DiskCH2

(CH3)

(CH0) Passive

Active

SEP

T

T

T

T

T

T

T

T

Drives 7 - 12

Drives 1 - 6


RAID Controller

RAID Controller

Passive

SCSI Data Cable

SCSI Data Cable

SAFTE Disk I/O

imageRAID IRS-2U160

Chl 1

Ctlr 1 Ctlr 2SAF-TE

Chl 2

Chl 0 Chl 3

Chl 0 Chl 3

I/O

RAID Controller


PowerSupply

CoolingFans

I/O

Host Computer

Active-Passive Dual Port:Host Cabling



Setup for Dual Host (Single HBAs)


Active-Passive Dual Port Logical Diagram


Host I/O Connectors





SEP



DiskCH1

DiskCH2

(CH3)

(CH0)CH 0

CH 3

CH

1C

H 2

CH 0

CH 3

I/O Card

I/O Card

Active

Controller 2

DiskCH1

DiskCH2

(CH3)

(CH0) Passive

Active

SEP

T

T

T

T

T

T

T

T

Drives 7 - 12

Drives 1 - 6


RAID Controller

RAID Controller

Passive


SAFTE Disk I/O


imageRAID IRS-2U160

Chl 1

Ctlr 1 Ctlr 2SAF-TE

Chl 2

Chl 0 Chl 3

Chl 0 Chl 3

I/O

RAID Controller


PowerSupply

CoolingFans

I/O

Active-Passive Dual Port:Host Cabling 75


76


Single Bus Clustering Configuration

The enclosure is setup as a Single-Bus configuration using a single enclosure

which provides up to a 12 disk drive storage solution in a clustered environment.

Logical View of Drive Connectivity - Single-Bus Mode

In Single-Bus Mode access to the drives can occur through Channel 1 or Channel

2. A “Single-Bus Module” must be installed in the Controller 1 (lower) slot. This

module connects Channel 1 and Channel 2 creating a single continuous SCSI bus.

NOTE: In the preceding logical diagram, the drive slots are used to indicate

which drives are connected to which channel. They should not be

confused with the disk drive SCSI IDs. Those IDs are pre-determined by

the SCSI SAF-TE Cluster card switch settings.

1 Remove the SCSI SAF-TE Clustering card installed in the enclosure. Loosen

the two thumb screws and remove the card from its slot location.

2 Locate the switches on the card and set them as described in the switch

setting diagrams.

Some configurations have multiple switch setting options available, choose

the setting that is appropriate for your system.

Connectors

Single BusModule

SEP




T

T

T

T


Drives 7 - 12

Drives 1 - 6

CH 1CH 2

HostHost

SEP

SBE

SBE




SCSI SAF-TE Clustering Card Switch and Jumper Locations

There is one switch setting, refer to the switch setting illustration below and

verify the switches are set as illustrated.

Single-Bus Switch Setting

3 Re-install the SCSI SAF-TE Clustering card. Slide the card into the slot and

ensure that it seats completely. Secure the card by tighten the two thumb

screws.

4 Install the Single-Bus Module in the Controller 1 slot.

a Remove the Cover plate. Loosen the six thumb screws and pull the cover

plate from the enclosure.



c Re-install the Cover plate. Tighten the six thumb screws, do not

overtighten.

JP7

ADD JUMPER

TO DISABLE

TERMINATION

JP8

CNFG 1CNFG 2RAID

SPARE 1SPARE 2

BAUD SELDLY STRT

RMT STRT

ADD JUMPER

TO DISABLE

TERMINATION

CHANNEL -1

CHANNEL -2

RD

A0

1 2 3 4 5 6 7 8

A1

S0

S1

BD

DL

RM

UP



Channel 1

Channel 2

DOWN

Confi

gurat

ion1

Confi

gurat

ion2

RAID

Spare

1Sp

are2

BAUD

Rate

Selec

t

Delay

Drive

Star

t

Remote

Drive

Star

t

RD

A0

1 2 3 4 5 6 7 8

A1

S0

S1

BD

DL

RM


Slo t 1

S lo t 2

S lo t 4

S lo t 5

S lo t 7

S lo t 8

S lo t 10

S lo t 11

ID 2

ID 3 ID 4

ID 9 ID 10

ID 11 ID 12



SAF-TE ID = 15

Sing le -Bus Mode

Single Bus Clustering Configuration 77


78


Single-Bus Module Installation

5 Connect the SCSI data cable(s) from the host system HBAs to the SCSI

SAF-TE Clustering card.

Cabling Diagrams Single Enclosure - Single-Bus Mode

This completes the setup, refer to “Powering On the Storage System” on page 80.

Follow your operating system requirements for preparing new disk drives.

JP7

ADD JUMPER

TO DISABLE

TERMINATION

ADD JUMPER

TO SUPPLY

TERM POWER

JP6

JP5

CNFG 1CNFG 2RAID

SPARE 1SPARE 2

BAUD SELDLY STRT

RMT STRT

JP8ADD JUMPER

TO DISABLE

TERMINATION

ADD JUMPER

TO SUPPLY

TERM POWER

CHANNEL -1

CHANNEL -2

JP1

ADD JUMPER

TO DISABLE

TERMINATION

ADD JUMPER

TO SUPPLY

TERM POWER

JP3

JP2JP4

JP1

ADD JUMPER

TO DISABLE

TERMINATION

ADD JUMPER

TO SUPPLY

TERM POWER

JP3

JP2JP4

Cover Plate

Single-BusModule

SCSI Data Cable

Ethernet Cables Ethernet Cables

Switches

SCSI Data Cable

SAFTE Disk I/O

Host Computer

imageRAID IRS-JBOD

Chl 1

Ctlr 1 Ctlr 2SAF-TE

Chl 2

Single BusModule

PowerSupply

PowerSupply

CoolingFans

Host Computer




Upgrades

At some point you may have a need to upgrade your storage system to increase

the storage capacities and/or the RAID capabilities. The imageRAID SCSI Series

Storage System provides you with this ability to meet your expanding data

storage requirements.

The imageRAID controllers support a feature know as “drive roaming,” where the

controllers can keep track of which drive belong to which logical arrays. In the

event the drives’ enclosure is changed or they are moved to another enclosure

attached to the same set of controllers, the arrays will not be lost or damaged.

The upgrade process is relatively easy, you simply refer to the new Enclosure

Configuration section to find the new configuration that supports the number of

enclosures/drives you will be adding. Set the enclosure SAF-TE Disk I/O card(s)

switch settings for the new configuration and cabling the storage system enclosures

as indicated. Then, if applicable, refer to the Topology Host Cabling section to

locate the new topology and re-cable your new configuration as indicated.

NOTE: Changing operating mode topologies may have an effect on which

configuration you may use. Refer to the Enclosure Configuration section

and the Topology Host Cabling section to ensure that you have selected

a configurations that is supported. Refer to “Operating Modes Overview”

on page 21 for more information.

NOTE: You will not be required to move disk drives around in the enclosure(s),

the Drive Roaming feature will locate those drives when the entire

system is powered back up.

Upgrades 79


80


Powering On the Storage System

After you have the system setup and installed, you are ready to power on the

storage system enclosure(s).

NOTE: Ensure that none of the data cables or power cables are obstructing the

air flow exiting the cooling fan module.

1 Locate the power supply On/Off switches at the rear of the enclosure(s).

2 Press each power supply switch to its “On” position. (Repeat this step for

each of the attached storage system enclosure(s).)

All enclosures will perform a power on self test during their initial start.

3 Next power on the host computer(s) which is connected to the storage

system.

Powering Off the Storage System

NOTE: If you are planning to completely shut down the entire system, power

down the host system first.

1 If applicable, ensure that the controller(s) have been gracefully shut down.

Refer to “Shutdown Both” in the VT-100 or AdminiStor software guides.

2 Press each enclosure’s power supply On/Off switches to their “Off” position.

3 Repeat the above step for each of the attached storage system enclosure(s).

Powering On the Storage System

Chapter 4


Accessing the imageRAID Controllers

There are two types of software user interfaces provided to access, configure and

manage the imageRAID Controllers; they are AdminiStor Storage Management

software and the controller’s onboard Disk Array Administrator software.

AdminiStor is a HTML/Java application that provides a GUI interface through a

standard web browser for configuration and management of the disk arrays.

The onboard firmware-based Disk Array Administrator software provides a

VT-100 terminal interface which is accessed by directly attaching to either one or

both controllers service ports.

For detailed software information. refer to the AdminiStor Software Guide or the

VT-100 Software Guide.

With either software product, you can:

� View component status.

� Create and manage disk arrays.

� Monitor system status.

� Manage drive spares.

� Configure the controller.

� Manage disk drives and enclosure components.

At the end of this chapter are procedures for updating the imageRAID

Controller’s onboard firmware.

81

Chapter 4 - Accessing the imageRAID Controllers

82


Accessing the Disk Array Administrator Software/VT-100

You can gain access to the imageRAID Controller firmware-based Disk Array

Administrator software using a VT-100 terminal accessed through one of the RS-232

controller service ports located at the rear of the enclosure. You must use a

null-modem serial cable to connect the terminal to either the Controller 1 (CTRL 1)

or Controller 2 (CTRL 2) service ports. It is recommended to connect to the specific

controller to which you wish to access. For example; in an active-active

configuration where Controller 1 is the primary controller, access the arrays and

utilities through the CTRL1 port.

Configure your host system or terminal RS-232 port to use the following settings:

Set the communications parameters for the terminal program as follows:

To access the controllers using a VT-100 terminal:

1 From the computer or terminal connected to one of the controller ports, start

your terminal or terminal emulation software.

Be sure that your terminal emulation software is set to use the correct COM

port on your computer. See Terminal Emulator and COM Port Problems in

chapter 6 for more details on how it can auto-detect the baud rate.

Setting Value

Terminal Emulation VT-100 or ANSI (for color support)

Font Terminal

Translations None

Columns 80

Setting Value

Baud Rate 115,200

Data Bits 8

Stop Bits 1

Parity None

Flow Control None

Connector COM1 (typically)

Accessing the Disk Array Administrator Software/VT-100



The initial Boot and POST screens are displayed.

Boot and POST Screen

2 Following the Boot and POST screens the System Menu is displayed.

System Menu Screen

3 You can now perform all of the functions described in the following

chapters. All steps start from the System Menu.

If an event has occurred, you will see a message about the problem. This

message will also be stored in the event log.

Accessing the Disk Array Administrator Software/VT-100 83


84


Menu System

Below and on the next page are charts of the menu system for the onboard Disk

Array Administrator software. These are provided to assist you with quickly

locating a specific software function within the menu system.

Disk Array Administrator Software Menu 1 of 2

System Menu

* Applicable only with dual controllers.

Array MenuAdd an ArrayDelete an ArrayPool Spare MenuDisplay DrivesAll Partitions MenuConfiguration MenuUtilities MenuEvent Log Menu* Other Controller MenuShutdown/Restart

Array Menu

Array StatusDrive StatusAbort InitializationVerify FunctionExpand FunctionAdd SpareDelete SpareChange Array nameTrust Array* Switch Array OwnerPartition MenuAdd a PartitionDelete a Partition

Verify Function

Start VerifyView Verify StatusAbort Verify

Expand Function

Start ExpandView Expand Status

Add an Array

Enter Array NameSingle PartitionEnter LUNSelect RAID TypeNumber of DrivesSelect DrivesChunk SizeNumber of Spares

Pool Spare Menu

Display Pool SpareAdd Pool SpareDelete Pool Spare

Partition Menu

Partition StatusPartition StatisticsExpand PartitionChange LUNChange Partition NameDelete This Partition

Partition Statistics

View StatisticsReset Statistics

Menu System



Menu System (continued)

Disk Array Administrator Software Menu 2 of 2

System Menu

* Applicable only with dual controllers.

Array MenuAdd an ArrayDelete an ArrayPool Spare MenuDisplay DrivesAll Partitions MenuConfiguration MenuUtilities MenuEvent Log Menu* Other Controller MenuShutdown/Restart

Configuration Menu

Set Date/TimeHost ConfigurationChannel ConfigurationSEP ConfigurationDisk ConfigurationBackoff PercentUtility PriorityAlarm MuteOption ConfigurationRestore Defaults

Set Date/Time

Set TimeSet Date

Channel Configuration

ChannelBus SpeedDisable Domain ValidationInitiator ID

SEP LUNs

SEP SettingsSEP LUN

Disk Configuration

Write-Back CacheSMART

Drive Utilities Menu

Blinik Drive LEDClear MetadataDown DriveTest Unit ReadyDisplay Drive Cache

Overall Statistics

View StatisticsView R/W HistogramReset All Statistics

Option Configuration

Operating ModeCache LockBatteryTrust ArrayDynamic Spare ConfigurationEnclosure Features

SEP Settings

Poll RateTemperatureSlot FlagsGlobal Flags

Host Configuration

Channel 0 or 1Enable/DisableTarget IDController LUNTopology (Loop or Point-to-Point)* Reset on Failover

Utilities Menu

RescanHot Swap PauseHardware InformationLUN InformationDrive Utilities MenuOverall Statistics

* Other Controller Menu

Other InformationKill OtherUnkill OtherShutdown OtherShutdown Both

Menu System 85


86


Updating imageRAID Controller Firmware

The following information describes the procedures to upload new firmware to

the imageRAID Controllers. The firmware is uploaded offline and during the boot

process.

1 Connect one end of the null-modem RS-232 cable to the imageRAID

Controller 1 Service port located on the rear panel of the enclosure.

Connecting the RS-232 Cable

The cable is a female-to-female DB-9 null-modem serial cable.

2 Connect the other end of the cable to either a host system’s serial

communication port or a VT-100 type terminal.

3 On a host system, run a terminal emulation program or start the terminal.

4 Verify the communication parameters are as follows:

• 115,200 Baud

This is the speed at which the controller is communicating.

• 8 Data bits• 1 Stop bit• None (parity)• Flow Control Off

5 Boot the imageRAID Controller Enclosure.

6 When the boot information appears on the screen press the <Space Bar>.

CTRL 1

CTRL 2


SAF-TE Service Port





FLASH Loader Screen

7 Select option “3” xmodem by pressing the <3> key.

FLASH Loader Waiting for Transfer Selection Screen

8 Using the mouse, click on the pull-down menu Transfers and select “Send.”

Updating imageRAID Controller Firmware 87


88


Send File Screen

9 Click the browse button and locate the new Firmware file and click “Send.”

The firmware file will have a “.fla” extension.

NOTE: Ensure that the protocol “Xmodem” is selected.

From the Xmodem send screen you can monitor the progress of the upload.

You can safely stop the transfer without affecting your existing firmware any

time during the transfer until it has been completed. The upload does not

overwrite the firmware during the upload process, it writes the new code

into unused EEPROM space until completed, then copies the new firmware

code to the EEPROM active region.

If you elect to stop an upload progress, ensure that the stop (abort)

command was completed by typing <Control-X> at the cursor.

10 After the upload is successful, the Flash Loader will reboot the controllers.

During the reboot it will bring the second controller offline, if applicable, and

update its firmware.


Chapter 5


Monitoring Systems

In this chapter you will find information about using the enclosure’s onboard

monitoring systems. Also you will find procedures to update the enclosure’s

SAF-TE Disk I/O card firmware.

Using a VT-100 terminal (or emulation), the SAF-TE RS-232 Service port provides

an interface to the enclosure’s monitoring system and firmware.

You should monitor your storage system regularly to ensure that the disk drives,

controllers, arrays, and enclosure components are working properly. The front

bezel LEDs provide monitoring information on enclosure components, fan status,

disk drive status, controller status, and array monitoring. The “One-Touch

Annunciation” Configuration Display provides information about switch settings,

I/O card and controller presence from the touch of a button.

NOTE: Refer to your software user’s guide that accompanied your product for

details on configuring and setting up the logical arrays and imageRAID

Controllers.

Enclosure Component Monitoring

This section covers notifications provided by the front bezel LEDs and a detailed

explanation of the “One-Touch Annunciation” monitoring system.

As part of the monitoring notifications, an audible alarm works in conjunction

with the enclosure’s LEDs, and will sound an alert for any fault that occurs with

an enclosure component, logical array, or disk drive. To silence the alarm, simply

press the Alarm Reset button.

89

Chapter 5 - Monitoring Systems

90



The Status Indicator LEDs located above the Alarm Reset button, comprise the

Power-On LED, Channel Status LED, Power Supply Status LED, and Fan Status

LED. The following are descriptions of each of the LEDs.

Power-On LED

The Power-On LED signifies that the enclosure is powered on and will be

illuminated green when power has been applied.

Channel Status LED

The Channel Status LED will remain green at all times when the enclosure is

setup in JBOD mode.

The LED will indicate the status of the logical array(s), when enclosure is setup in

a imageRAID configuration. It will also indicate a failed controller by alternately

blinking green and amber when a failure does occurs.

Power Supply Status

The Power Supply Status LED indicates the condition of the power supplies. The

LED will illuminate steady green when both power supplies are functioning

normally and will change to amber if one of the power supplies should fail or be

turned off.

A failed power supply can be identified by the illumination of the amber “Fault”

LED located on the power supply.

Fan Status

The Fan Status LED indicates the condition of the cooling fans. The LED will

illuminate green when bath fans are functioning normally and will change to

amber if any of the fans fail.




Drive LEDs

The Drive LEDs are located on the left side of the front bezel in between the

ventilation ribs and comprise the Drive Status LEDs and Drive Activity LEDs. The

Drive LEDs are grouped in pairs and are in the general location of the drive slot.

These Drive LEDs assist with identifying which drive is experiencing I/O activity,

array status, and the presence of a drive in a drive slot.

The Drive Status LEDs comprise the “One-Touch Annunciation” monitoring

system which can display the status of controllers and SAF-TE Disk I/O or SCSI

SAF-TE Cluster card switch settings from the touch of the Alarm Reset button.

Refer to “One-Touch Annunciation” on page 95 for more information.

Front Bezel LED and Component Identification

Also, on each disk drive carrier are “LitePipes.” They are located on the lower

right side of each drive carrier. The LitePipes present the some of the information

provided by the front bezel Drive LEDs, that is drive activity information and

drive fault (failure) or data rebuilding notifications when the front bezel is

removed.

RESET ALARM

Drive LEDs

Alarm Reset Button(Press-to-Display Annunciation)

Power On LED

Channel Status LED


Cooling Fan Status LED

Status LEDs

Activity LEDs

Status LEDs

Activity LEDs

Status LEDs

Activity LEDs

Status LEDs

Activity LEDs

Drive Slot 1 Drive Slot 4 Drive Slot 7 Drive Slot 10



Drive LEDs 91


92


Drive Carrier LitePipes

Drive Status LEDs

There are twelve Drive Status LEDs. The Drive Status LED is the left LED of each

pair of Drive LEDs. This LED will illuminate steady green when a drive is present

in the slot and powered on. If a drive is not present the LED will be off.

Drive Activity LEDs

There are twelve Drive Activity LEDs. These LEDs will flash on to indicate no

activity or a read operation, while when the LED is off it indicates a write

operation. The Drive Activity LED is the right LED of each pair of Drive LEDs.

Audible Alarm

An audible alarm will sound when any of the enclosure’s component condition

changes to an abnormal state. To silence the alarm, press the Alarm Reset button

located on the front bezel. The corresponding alarms’ LED will remain

illuminated until the condition returns to a normal state.

Act iv i t y LED

Fau l t LED

Li teP ipes

Drive Status LEDs



LED Matrix

When the RAID Controllers are installed, they have control of the Drive Status

and Drive Activity LEDs.

Front Bezel LEDs

These LEDs are located on the front bezel. Refer to the table below for a list of the

LED conditions and their meaning:

imageRAID SCSI Series Front Bezel LED Matrix

Condition Drive Status LED

At power up. Steady Green

DRIVE READY Not assigned to an array.

Blinking Green

DRIVE READY Assigned to an array.

Steady Green

DRIVE ERROR - FAULT Not assigned to an array.

Blinking Green

DRIVE ERROR - FAULT (Failed) Assigned to an array.

Fast Blinking Amber(3 blinks per second)

ARRAY CRITICAL (Remaining good drive LEDs) Assigned to an array.

Slow Blinking Amber(1 blink per second)

RESET ALARM

Drive LEDs

Alarm Reset Button(Press-to-Display Annunciation)

Power On LED

Channel Status LED


Cooling Fan Status LED

Status LEDs

Activity LEDs

Status LEDs

Activity LEDs

Status LEDs

Activity LEDs

Status LEDs

Activity LEDs




LED Matrix 93


94


POOL SPARE Blinking Green

HOT SPARE Rebuild mode (All Drive Status LEDs)

Steady Amber

HOT SPARE READY Assigned to an array.

Steady Green

EMPTY DRIVE SLOT Off

Channel Status LED

Array is Fault-Tolerant Steady Green

Array is in Rebuild Mode Steady Amber

Array has a failed drive. Steady Amber

Controller Failure Blinking Amber and Green

imageRAID SCSI Series Front Bezel LED Matrix

Condition Drive Status LED

LED Matrix



One-Touch Annunciation

The imageRAID SCSI Series “One-Touch Annunciation” monitoring system is an

easily accessible press-to-touch display of the SAF-TE Disk I/O or SCSI SAF-TE

Cluster card switch settings, enclosure bus mode, type of host interface, serial

communication BAUD rate, and controller status using the Drive Status LEDs and

the Alarm Reset button.

By pressing and holding the Alarm Reset button, the Drive Activity LEDs will all

be extinguished and the Drive Status LEDs will illuminate in unique combinations

to indicate the settings and conditions. Below is an illustration and a table that

describes the Drive Status LEDs and their meanings:

Status LED Call-Outs

Status LED Conditions

RESET ALARM

Bus Configuration

Host TypeInterface

NotApplicable

SAF-TE CardSwitch 1

SAF-TE CardSwitch 6Baud Rate

NotApplicable

SAF-TE CardSwitch 2

SAF-TE CardSwitch 7Delay Start

Controller 1Status

Press and Holdto display settings

SAF-TE CardSwitch 3 RAID Addressing

SAF-TE CardSwitch 8Remote Start

Controller 2Status

One-Touch Annunciation Configuration Display

Slot 1Bus Configuration

Slot 4SAF-TE Card Switch 1 (A0)

Slot 7SAF-TE Card Switch 2 (A1)

Slot 10Fan Speed Control

Slot 2Host Interface Type

Slot 5SAF-TE Card Switch 6

Baud Rate


Delay Start


Remote Start

Slot 3Not Applicable

Slot 6Not Applicable

Slot 9Lower Controller Present

Slot 12Upper Controller Present

LED On = Dual BusLED Off = Single Bus

LED On = Up (Enabled)LED Off = Down (Disabled)

LED On = Up (Enabled)LED Off = Down (Disabled)

LED On = Enabled (RAID)LED Off = Disabled (JBOD)

LED On = SCSI HostLED Off = Fibre Host

LED On = 19,200 BAUDLED Off = 9,600 BAUD

LED On = Delay Start DisalbedLED Off = Delay Start Enabled

LED On = Remote Start DisabledLED Off = Remote Start Enabled

LED On "Green" = OK LED On "Amber" = FailedLED Off = Missing

LED On "Green" = OK LED On "Amber" = FailedLED Off = Missing

One-Touch Annunciation 95


96


The following are examples of the One-Touch Annunciation LEDs for switch

settings, controller and bus configurations when the Alarm Reset button is pressed.

IRS-JBOD Single-Bus Configuration Annunciation LED Sample

NOTE: SAF-TE switches 1 (A0) and 2 (A1) work in combinations to create a

specific range of SCSI IDs.

When you press and hold the Alarm Reset button, and you get the following

conditions, then you will know:

IRS-JBOD Single-Bus Example

Drive Slot Status LED LED Condition Indication

Drive Slot 1 Off Enclosure in single-bus mode.

Drive Slot 2 On SCSI Host Interface.

Drive Slot 3 Off N/A

Drive Slot 4 Off Switch 1 (A0) is in the DOWN position. This will set the Drive Slot SCSI IDs to ID 1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 13, and 14. It reserves IDs 0 and 7 for the HBAs, and ID 15 for the SAF-TE processor.

Drive Slot 5 Off Indicates that Switch 6 is in the DOWN position which sets the BAUD rate for the SAF-TE RS-232 service port to 9,600.


Status LEDs

Activity LEDs

Status LEDs

Activity LEDs

Status LEDs

Activity LEDs

Status LEDs

Activity LEDs

Drive Slot 1 Drive Slot 4

Example of LEDs

Drive Slot 7 Drive Slot 10


Drive Slot 3

LED ON Condition (Green)

LED OFF Condition

Drive Slot 6 Drive Slot 9 Drive Slot 12

RD

A0

1 2 3 4 5 6 7 8

A1

S0

S1

BD

DL

RM

UP (1)

DOWN (0)

SAF-TE D isk I /O CardSwi tch Set t ings




Active-Active/Active-Passive Dual-Bus Configuration Annunciation LED Sample

NOTE: SAF-TE switches 1 (A0) and 2 (A1) work in combinations to create a

specific range of SCSI IDs.

When you press and hold the Alarm Reset button, and you get the following

conditions, then you will know:

Active-Active/Active-Passive Dual-Bus Example

Drive Slot 7 Off Switch 2 (A1) is in the DOWN position. This will set the Drive SCSI IDs of the slots to IDs 1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 13, 14. It reserves IDs 0 and 7 for the host bus adapter, and SCSI ID 15 for the SAF-TE processor.

Drive Slot 8 On Switch 7 is in the UP position which sets the Delay Start mode to be disabled.

Drive Slot 9 Off Controller is not installed.

Drive Slot 10 Off Switch 3 (RD) is in the DOWN position which disabled RAID addressing and is used when configuring JBOD mode.

Drive Slot 11 On Switch 8 is in the UP position which sets the Remote Start mode to be disabled.

Drive Slot 12 Off Controller is not installed.

Drive Slot Status LED LED Condition Indication

Status LEDs

Activity LEDs

Status LEDs

Activity LEDs

Status LEDs

Activity LEDs

Status LEDs

Activity LEDs



Drive Slot 3

LED ON Condition (Green)

LED OFF Condition

Drive Slot 6 Drive Slot 9 Drive Slot 12

RD

A0

1 2 3 4 5 6 7 8

A1

S0

S1

BD

DL

RM

SAF-TE D isk I /O CardSwi tch Set t ings

UP (1)

DOWN (0)

Example of LEDs

One-Touch Annunciation 97


98


Drive Slot Status LED LED Condition Description

Drive Slot 1 On Enclosure in dual-bus mode.

Drive Slot 2 On SCSI Host Interface.



Drive Slot 5 Off Indicates that Switch 6 is in the DOWN position which sets the BAUD rate for the SAF-TE RS-232 service port to 9,600.



Drive Slot 8 On Switch 7 is in the UP position which sets the Delay Start mode to be disabled.

Drive Slot 9 On Controller is present.

Drive Slot 10 On Switch 3 (RD) is in the UP position which enables RAID addressing and is used when configuring RAID mode (NexStor 4110S or NexStor 4120S).

Drive Slot 11 On Switch 8 is in the UP position which sets the Remote Start mode to be disabled.

Drive Slot 12 On Controller is present.




Enclosure SAF-TE Monitoring

Another feature of the imageRAID SCSI Series storage system is the enclosure

monitoring capabilities. The firmware-based monitoring program allows users to

view storage system component status and information about the firmware. You

may access this program by connecting a VT-100 terminal to the SAF-TE Service

port.

To access the monitoring program:

1 Connect one end of the null-modem RS-232 cable to the SAF-TE Service port

located on the rear panel of the enclosure.







• 9600 Baud (optional 19,200)

Baud rate set by Switch 6 – up for 19,200 and down for 9,600 (verify the setting by pressing the Alarm Reset button and noting the condition of the Drive Status LED for Drive slot 5.


CTRL 1

CTRL 2


SAF-TE Service Port


Enclosure SAF-TE Monitoring 99


100


5 At the screen cursor, type <Control-E>. The Enclosure Terminal Utility menu will appear.

Enclosure Terminal Utility Screen

6 To monitor the enclosure components, select option “1” Show Enclosure Environment Status by pressing the <1> key.

The screen provides a status list of the internal components such as disk drives in a specific slot, temperature of the thermal sensors, cooling fan status, power supply status, and statistics on enclosure “up time.”

Enclosure Environment Status Screen

NOTE: System degradation will occur if the display is left in the “Show Enclosure Environment Status” mode. After you have viewed the information press the <Esc> key to remain idle in the main Enclosure Terminal Utility screen.

7 Press the <Esc> key to return to the Main menu.

NOTE: Options 2 through 4 are factory and technical support features. Do not access these features unless instructed to do so by a support technician.

Enclosure SAF-TE Monitoring



Uploading SAF-TE Disk I/O & SCSI SAF-TE Cluster Card Firmware

The following information describes the procedures to upload new firmware to

the SAF-TE Disk I/O or SCSI SAF-TE Cluster card. The firmware can be uploaded

in a “live” environment. There is no need to down the system to perform this

function.

1 Connect one end of the null-modem RS-232 cable to the SAF-TE Service port

located on the rear panel of the enclosure.







• 9600 Baud (optional 19,200)

Baud rate set by Switch 6 – up for 19,200 and down for 9,600 (verify the setting by pressing the Alarm Reset button and noting the condition of the Drive Status LED for Drive slot 5.


5 At the cursor, type <Control-E>.

CTRL 1

CTRL 2


SAF-TE Service Port


Uploading SAF-TE Disk I/O & SCSI SAF-TE Cluster Card Firmware 101


102


The Enclosure Terminal Utility menu will appear.

Enclosure Terminal Utility Screen

6 Select option “5” Firmware Upload by pressing the <5> key.

Upload Firmware Screen

7 Press the <u> key (lower case) to start the upload. Using the mouse, click on

the pull-down menu Transfers and select “Send.”

Send File Screen




8 Click the browse button and locate the new Firmware file and click “Send.”

The firmware file will have a “.S3R” extension.

NOTE: Ensure that the protocol “Xmodem” is selected.

From the Xmodem send screen you can monitor the progress of the upload.

You can safely stop the transfer without affecting your existing firmware any

time during the transfer until it has been completed. The upload does not

overwrite the firmware during the upload process, it writes the new code

into unused EEPROM space until completed, then copies the new firmware

code to the EEPROM active region.

If you elect to stop an upload progress, ensure that the stop (abort)

command was completed by typing <Control-X> at the cursor.

Xmodem Transfer Screen

9 After the upload is successful, the Upload Program will then update the

second SAF-TE processor.

Transfer to Second Controller Processor Screen

Uploading SAF-TE Disk I/O & SCSI SAF-TE Cluster Card Firmware 103


104


A progress status screen will appear. At 100% the following screen will

appear.

Update Confirmation Screen

After the confirmation is complete, the following screen will appear.

Update Status Screen

10 Verify the new firmware has successfully loaded, type <Control-E>.

11 Press the <Esc> key to return to the Main menu.




Enclosure Fan Speed Control

The SAF-TE Disk I/O or SCSI SAF-TE Cluster card has a firmware-based VT-100

interface which provides an option for fan speed control. This allows the user with

the choice to enable or disable the automatic control feature. It provides for more

efficient management of the cooling fans and a whisper mode fan operation for

noise sensitive environments where it significantly reduces the noise created by the

cooling fans running constantly at full speed. Under normal conditions it is not

necessary to run the cooling fans at full speed.

When this option is enabled, the software will control the RPM of the cooling

fans based on enclosure temperature parameters and its installed components.

For example, if any one or a combination of the following occurs, the cooling fan

RPMs will be set to the maximum software controlled RPM: a disk drive is

removed from any of the drive slots 4 through 9, a power supply is removed, one

of the cooling fans in the cooling fan module fails, a temperature sensor fails, or

a SAF-TE processor fails.

Fan Speed Setup Screen

A manual override of the fan speed control is available for special circumstance

environments. Referring to the illustration on the following page, two jumpers are

provided on the fan module printed circuit board to override the firmware

control of the fan speeds.

Enclosure Fan Speed Control 105


106


This hardware setting provides full voltage to the fans for maximum operational

speed, which is greater than the maximum speed set by the automatic software

control. This configuration is normally used when fan speed noises are not an

issue, and the ambient operating temperature is at or above 30°C (86°F), thus

ensuring that maximum available cooling is being provided.

Cooling Fan Module

The jumpers JP1 and JP2 are by default are offset which enables the use of the

automatic fan speed control. The jumper JP1 controls Fan 0 and JP2 controls Fan 1.

Placing the included jumper on both pins of each jumper will override the

automatic setting and set the fans to maximum power.

Fan Speed Override ControlJumpers JP1 (Fan 0)and JP2 (Fan 1)

Enclosure Fan Speed Control



SAFTE Commands Debug

This feature (Option 2) provides manufacturers and developers the ability to

monitor “read and write” command buffers for both SAF-TE processors. The

interface allows the user to scroll back through the buffer data, or select the

“Transfer>Capture Text” to save the buffer captures to a text file.

SAFTE Commands Debug Screen

NOTE: Options “2 - SAFTE Commands Debug”, “3 - Environment Testing Menu”,

and “4 - Cycle Test” are made available for manufacturers and OEMs for

development purposes. They are not intended as normal user’s options.

SAFTE Commands Debug 107


108


SAFTE Commands Debug

Chapter 6


Troubleshooting

This chapter provides typical solutions for problems you may encounter while

using the imageRAID SCSI Series Storage System.

General Enclosure Problems

Common SCSI Bus Problems

SCSI Bus problems can usually be attributed to cabling issues or a faulty SAF-TE Disk

I/O or SCSI SAF-TE Cluster card. Refer to the chart below and review troubleshooting

and fault isolation procedures to assist you in identifying the suspect component.

Symptom Reason Solution

Fails to power on. Power cord(s) not connected properly.

Power not available at the outlet.

Power switch not in the proper position.

Faulty power cord.

Faulty power supply.

Verify that the power cord is properly connected to the power module.

If the enclosure is plugged into a three-hole grounded outlet, verify that power to the outlet has not been interrupted. This can be accomplished by testing the outlet with a known working appliance, like a lamp.

Be sure that the power switch is in the “On” position, labeled with an “I.”

Replace the power cord.

Identify the failed PSU, see “Replacing an AC Power Supply” on page 125.

If the enclosure is not responding, contact your service provider.

109

Chapter 6 - Troubleshooting

110


SCSI Bus Symptom Probable Cause Solution

Host SCSI BIOS scan hangs.

Possible termination or SCSI ID conflict.

Check the Host ID and proper system configuration.

Not all drives connected to the HBA channels are displayed during boot.

Possible termination or SCSI ID conflict.

Check that the SCSI connectors are properly connected. Check SCSI ID assignments.

If the enclosure is the daisy-chained enclosure, check the I/O card jumper settings in the last enclosure on the chain.

SCSI Bus hangs, SCSI Bus excessively retries, and/or drives drop offline.

Faulty connectivity.

Faulty SAF-TE Disk I/O & SCSI SAF-TE Cluster card (IRS-JBOD or Daisy-chained enclosure) or Host I/O card.

Re-check the cable connections to the SAF-TE Disk I/O & SCSI SAF-TE Cluster card and/or Host SCSI I/O card.

If you have daisy-chained storage systems connected on the SCSI bus, you will need to perform some fault isolation.

If all the drives on one bus are offline, start with the daisy-chain storage system. Disconnect the data cable. If the remaining drives return to a normal state it indicates that the isolated storage system has the faulty component.

If this does not return the remaining drives to a normal state, it is a good indication that the problem is in the first storage system and/or its SAF-TE Disk I/O & SCSI SAF-TE Cluster card.

You may use the SAF-TE Disk I/O & SCSI SAF-TE Cluster card from the other storage system or a “new” known good card. Substitute this card for the suspect card and it should return the storage system bus to a normal condition.

NOTE: A return to a normal condition is indicated by the drives coming back online.

After the faulty card is replaced, begin re-connecting the data cables on the SAF-TE Disk I/O & SCSI SAF-TE Cluster card, noting the SCSI bus and drives remain in a normal state.

Re-check the cables to the SAF-TE Disk I/O & SCSI SAF-TE Cluster card, Host SCSI I/O card, and the host adapter.

Common SCSI Bus Problems



Host system does not see the RAID Controllers.

Possible termination conflict.

Remove the Host SCSI I/O cards and install the jumper on both pins on JP1 and JP2.

SCSI Bus hangs, (continued).

Faulty SAF-TE Disk I/O & SCSI SAF-TE Cluster card (IRS-JBOD or Daisy-chained enclosure) or Host I/O card (continued).

Replace the SAF-TE Disk I/O & SCSI SAF-TE Cluster card or Host SCSI I/O card.

If the problem still exists in a RAID configuration, with the primary enclosure isolated to the host system, follow the procedures above to test the connectivity and operation of the Host SCSI I/O card. There are two Host SCSI I/O cards installed in RAID configurations, and you can move the cable to the second card, same channel connector to fault isolate the Host SCSI I/O card.

SCSI Bus Symptom Probable Cause Solution

Common SCSI Bus Problems 111


112


Terminal Emulator and COM Port Problems


Screen continuously puts out garbage characters.

The likely cause of this problem is a baud rate mismatch between the terminal emulator and the controller. The default baud rate is 115,200. Follow these steps if you set your terminal emulator to this rate and still get garbage characters:

1 If you are able, shut down the controller.

See “Rebooting the Controller” in the VT-100 or AdminiStor software guides. If you are unable to shut down the controller, continue with step 2.

2 Turn off the power to the enclosure containing the controller.

3 Press the spacebar of your terminal emulator.

4 Turn on the power while continuing to press the spacebar. This will allow the controller to auto-detect the baud rate setting.

5 When the Flash Utility appears, select option 5 to continue to boot the controller.

Note: Some terminal emulators do not immediately change to the new baud rate settings, and you have to exit and restart the emulator to use the new settings.

Nothing is displayed on the terminal emulator screen.

The probable cause of this problem is a bad RS-232 cable connection or swapped transmit/receive lines.

If the cable is properly connected on both ends, try another null modem cable.

Ensure that you are not using a straight through RS-232 cable.

Screen is updated, but will not respond to keystrokes.

Improper setting. Disable hardware flow control on the terminal or terminal emulator. The controller supports XON/XOFF flow control and works properly in most cases with no flow control.

Terminal Emulator and COM Port Problems



Host SCSI Channel Problems

Device SCSI Channel Problems

Symptom Solution

The host SCSI BIOS scan displays “Device name not available.”

The controller is properly installed, but no arrays have been created. Use AdminiStor or VT-100 Disk Array Administrator to create an array and reboot the host system.

The host SCSI BIOS scan hangs. Check that termination is set correctly in the Configuration Menu and the drive enclosure. Check that the device ID set in the software does not conflict with any other devices on the host SCSI channel. If you have a long SCSI cable, try a different or shorter cable.

Only one array is displayed during host SCSI BIOS scan.

Check to ensure that LUN support is enabled. Most SCSI host adapters ship with LUN support disabled by default. Use Display Array Status to check the LUN assignment for each array. If LUN 0 is not assigned to an array, or some other LUN numbers are skipped, use the Change LUN Assignment option for each array until you have LUN numbers starting at 0 with no LUNs skipped. You must reboot the host system to recognize the new LUN assignment.

All arrays are displayed during host SCSI BIOS scan, but only one array is seen by the operating system.

SCSI drivers for some operating systems require a parameter switch to enable LUN support. Check the driver documentation for your host SCSI channel. You may also need to compact the LUN mapping.

Problem Solution

Not all drives connected to the controller device channels are displayed during boot, or the controller hangs during display of connected drives.

Refer to chapter 3 to be sure that the enclosure is properly configured for use with a imageRAID controller. Check termination and ID assignment. If you have enabled Ultra/Ultra2 SCSI on any device channels, try disabling it.

Host SCSI Channel Problems 113


114


Problems During Bootup

The following sections describe problems you might encounter during Power On

Self-Test (POST) or during bootup sequence of the enclosure and explains how

to resolve those problems. POST shows problems related to the processor, logic,

and memory.

Symptom Solution

Controller failed the onboard memory test.

When this failure occurs, it means the internal CPU memory failed. Replace the controller to correct the problem.

System hangs at Loading Bridge during BFLU Loader Menu.

Re-flash the firmware to ensure you are using the latest version. See “Upgrading Firmware” in the VT-100 or AdminiStor software guides. If you cannot update the firmware or if the updated firmware does not correct the problem, replace the controller. Dual imageRAID controllers require the same version of firmware on both controllers.

One of the POST diagnostic tests failed.

Contact service provider.

The system hangs at CT_srv starting.

Follow these steps to resolve the problem:

1 Verify that there are no SCSI address conflicts.

2 Check the enclosure(s) to make sure everything is properly connected.

3 If the enclosure(s) and the drive work properly, replace the controller.

The system hangs during a drive scan.

Follow these steps to resolve the problem:

1 Check the enclosure(s) to make sure everything is properly connected.

2 Remove and replace the drive that failed the scan.

3 If the enclosure(s) and the drive work properly, replace the controller.

An Active-Active controller pair hangs during boot up drive scan (typically after displaying CT_Init on the RS-232 display).

Verify that all SCSI channels are connected, cabled, and terminated properly. Verify that the controllers are set to their default configuration (Active-Active:Single Port mode).

An Active-Active controller pair hangs the host system during normal operation or after failing over.

Verify that all SCSI channels are connected, cabled, and terminated properly.

An Active-Active controller pair always fails over after booting up.

Verify that the controller that is failed/killed is set to its default configuration (Active-Active:Single Port mode). Verify the same SDRAM DIMM sizes are in both controllers. Active-Active controllers require the same SDRAM DIMM size.

Problems During Bootup



Controller Problems

Common Problems and Interpreting the LEDs

Problem Solution

The controller’s STATUS LED is on, but there is no RS-232 display.

Check that the RS-232 cable is the correct type (null-modem). Check that the terminal emulation utility on the computer system is properly configured.

The controller reports a SDRAM memory error.

Check that the SDRAM DIMM is fully seated in the connector and the latches are fully engaged into the DIMM notches.

The controller reports a Battery error.

Verify that the correct NiMH battery pack is installed.


Power Supply Status LED is illuminated.

Power supply has failed.

Power supply turned off.

Power supply missing.

Loss of AC power to the power supply.

Replace the suspect faulty power supply.

Ensure that all the power supply switches are in their “On” position.

Replace the missing power supply and turn it on.

Verify that proper AC power is available to the power supplies. If the enclosure is plugged into a three-hole grounded outlet, verify that power to the outlet has not been interrupted. This can be accomplished by testing the outlet with a known working appliance, like a lamp.

Fan Status LED is illuminated.

Failed cooling fan. Replace cooling fan module.

Drive Status LED is not illuminated and a drive is present in the slot.

Fault on the SAF-TE Disk I/O & SCSI SAF-TE Cluster card.

Faulty disk drive.

Faulty SAF-TE Disk I/O & SCSI SAF-TE Cluster card.

Faulty Host SCSI I/O card.

Replace a faulty SAF-TE Disk I/O & SCSI SAF-TE Cluster card.

Replace the faulty disk drive.

Replace the faulty SAF-TE Disk I/O & SCSI SAF-TE Cluster card.

Replace the faulty Host SCSI I/O card.

Controller Problems 115


116


Warning and Error Events

There are a number of conditions that trigger warning or error events, activate

the alarm, and may affect the state of the STATUS and FAULT LEDs. The alarm

sounds mainly when the VT-100 or AdminiStor software displays a warning or

error event.

The alarm will silence when you acknowledged the event by pressing the alarm

reset button. The events in these categories are listed below.

Warnings

Warning events let you know that something related to the controller or an array

has a problem. You should correct the problem as soon as possible. The table

below defines each warning event and recommends the action you should take.

Occasionally, references are made in the “software guides,” of which there are

two manuals. They are the AdminiStor Software Guide and the VT-100 Software

Guide.

Event Definition Recommended Action

BATT FAIL INFO A warning condition in the battery pack and/or charging interface has been detected.

Replace the controller. Refer to “Replacing a Controller” in the VT-100,or AdminiStor software guides.

REPLACE BATTERY The battery is approaching its 3-year life span.

Replace the controller. Refer to “Replacing a Controller” in the VT-100 or AdminiStor software guides.

ARRAY CRITICAL One or more drives were downed and the array is online, but is no longer fault tolerant.

Add a spare to the array or the spare pool. Then replace the bad drives. See “Adding a Dedicated Spare” or “Adding a Spare to the Spare Pool” in the VT-100 or AdminiStor software guides.

DRIVE DOWN An error occurred with the drive and it was downed, removing it from the active array.

Add a spare to the array or the spare pool. Then replace the bad drive. See “Adding a Dedicated Spare” or “Adding a Spare to the Spare Pool” in the VT-100,or AdminiStor software guides.

SPARE UNUSABLE The drive still contains metadata that must be cleared.

Clear the metadata from the spare drive. See “Clearing Metadata from a Drive” in the VT-100 or AdminiStor software guides.

Warning and Error Events



Errors

Error events let you know that something related the enclosure, controller, or

disk drives has failed and requires immediate attention. The table below defines

each error event and recommends the action you should take.

SMART EVENT A disk drive informational exceptions page control (IEPC) predictive failure message was received. No actions by the controller are taken on the drive for these events.

Run diagnostics available from your operating system on the affected drive. Replace the drive, if necessary.

ARRAY OFFLINE More than one drive in a RAID 0 or volume set went down bringing the array to an offline state. This array is no longer accessible by the host.

Replace the bad drive and restore the data from backup.

VOLT/TEMP WARN The analog-to-digital converter monitored a temperature and/or voltage in the warning range.

Check that the controller’s fan is running. Check that the ambient temperature is not too warm. See “Technical Information” on page 141.

UNWRITABLE CACHE

The SDRAM cache has battery backed-up data, and the arrays assigned to this data are not present.

Either determine which drives are missing and reinstall them, or select Yes when asked if you want to discard this data.

SDRAM CORR ECC A correctable single-bit SDRAM ECC error occurred.

If this error occurs frequently, replace the memory.


VOLT/TEMP FAIL

The analog-to-digital convertor monitored a temperature and/or voltage in the failure range.

Check that the enclosure fans are running. Check that the ambient temperature is not too warm. See “Technical Information” on page 141.

ENCLOSURE FAIL

Enclosure specific general purpose I/O triggered a failure condition.

Check the status of the enclosure.

BATTERY FAILED

A failure in the battery pack and/or charging interface has been detected.

Replace the controller.

DISK CHAN FAILED

An error has occurred in communicating on the disk channel.

Check the cables on the channel.


Errors 117


118


Disk Errors

If a disk detects an error, it reports the error, which is recorded in the event log.

The following is an example of a disk-detected error.

Disk-Detected Error Example

Using the information in the Sense Key and ASC tables, you can see that this is a

medium error, unrecovered read error – recommended reassignment.

SDRAM UNCORR ECC

A noncorrectable multiple-bit SDRAM ECC error occurred.

Reseat the memory. If the problem continues, replace the memory.

Sense Key Descriptions

Sense Key Description

0h No sense

1h Recovered error

2h Not ready

3h Medium error

4h Hardware error

5h Illegal request

6h Unit attention

7h Data protect

8h Blank check

9h Vendor-specific

Ah Copy aborted

Bh Aborted command


Disk ChannelSCSI ID Sense Code Qualifier

Sense CodeSense Key

Disk Errors



Disk Channel Errors

Disk channel errors are similar to disk-detected errors, except they are detected

by the controller, instead of the disk drive. Some disk channel errors are

displayed as text strings, others are displayed as hexadecimal values.

The illustration on the following page shows a disk channel error displaying the

hexadecimal codes. Most disk channel errors are informational because the

controller issues retries to correct any problem. Errors that cannot be corrected

with retries will result in another critical event describing the affected disk array

(if any).

Bh Aborted command

Ch Obsolete

Dh Volumes overflow

Eh Miscompare

Fh Reserved

ASC and ASCQ Descriptions

ASC ASCQ Description

0C 02 Write error - auto-reallocation failed.

0C 03 Write error - recommend reassignment.

11 00 Unrecovered read error.

11 01 Read retries exhausted.

11 02 Error too long to correct.

11 03 Multiple read errors.

11 04 Unrecovered read error - auto-reallocation failed.

11 0B Unrecovered read error - recommend reassignment.

11 0C Unrecovered rear error - recommend rewrite data.

47 00 SCSI parity error.

48 00 Initiator-detected error message received.

Sense Key Descriptions

Sense Key Description

Disk Channel Errors 119


120


Disk-Detected Error Example

Disk Channel Error Codes

Error Code Description

04 Data overrun or underrun occurred while getting sense data.

05 Request for sense data failed.

20 Selection time-out occurred (displayed as Sel Timeout).

21 Controller detected an unrecoverable protocol error on the part of the target.

22 Unexpected bus-free condition occurred (displayed as Unex Bsfree).

23 Parity error on data was received from a target displayed as Parity Err).

24 Data overrun or underrun has been detected (displayed as Data OvUnRn).

30 Target reported busy status (displayed as Device Busy).

31 Target reported queue full status (displayed as Queue Full).

32 Target has been reserved by another initiator.

40 Controller aborted an I/O request to this target because it timed out (displayed as I/O Timeout).

41 I/O request was aborted because of a channel reset.

42 I/O request was aborted because of controller’s decision to reset the channel.

43 I/O request was aborted because of third-party channel reset (displayed as Abort 3PRST).

44 Controller decided to abort I/O request for reasons other than bus or target reset.

45 I/O request was aborted because of target reset requested by controller.

46 Target did not get response properly to abort sequence.

4B I/O aborted due to operating mode change (such as LVD to SE or SE to LVD) (displayed as Abort MdChg).

50 Disk channel hardware failure (displayed as DskChn Fail). This may be the result of bad termination or cabling.

Disk ChannelSCSI ID Error Code

Disk Channel Errors

Chapter 7


Maintenance

In this chapter you will find the maintenance procedures to replace individual

components, as well as the entire storage system enclosure.

Removing the Front Bezel

1 Using a Phillips screwdriver, unlock the two front bezel fasteners.

Unlocking the Front Bezel

Rotate the fasteners counterclockwise one-quarter turn to unlock.

Reset Alarm

121

Chapter 7 - Maintenance

122


2 Grasp and pull the front bezel from the enclosure. Refer to the illustration

below.


Reset Alarm




Replacing the Cooling Fans

NOTE: The cooling fan module is hot swappable.

WARNING: Do not operate the enclosure for extended periods of time, greater

than five (5) minutes, with the cooling fan module removed. No

cooling is available while the fan module is removed.

1 The cooling fan module is located at the rear of the enclosure. Place your

fingers in the fan module handle and press with your thumb to release the

latch while pulling the module from the enclosure.

Removing the Cooling Fan Module

JP7

ADD JUMPER

TO DISABLE

TERMINATION

ADD JUMPER

TO SUPPLY

TERM POWER

JP6

JP5

CNFG 1CNFG 2RAID

SPARE 1SPARE 2

BAUD SELDLY STRT

RMT STRT

JP8ADD JUMPER

TO DISABLE

TERMINATION

ADD JUMPER

TO SUPPLY

TERM POWER

CHANNEL -1

CHANNEL -2

JP1

ADD JUMPER

TO DISABLE

TERMINATION

ADD JUMPER

TO SUPPLY

TERM POWER

JP3

JP2JP4

JP1

ADD JUMPER

TO DISABLE

TERMINATION

ADD JUMPER

TO SUPPLY

TERM POWER

JP3

JP2JP4

Channel 3


Channel 1

CH 3Channel 0

CH 0

Channel 2

JP7

ADD JUMPER

TO DISABLE

TERMINATION

ADD JUMPER

TO SUPPLY

TERM POWER

JP6

JP5

CNFG 1CNFG 2RAID

SPARE 1SPARE 2

BAUD SELDLY STRT

RMT STRT

JP8ADD JUMPER

TO DISABLE

TERMINATION

ADD JUMPER

TO SUPPLY

TERM POWER

CHANNEL -1

CHANNEL -2

JP1

ADD JUMPER

TO DISABLE

TERMINATION

ADD JUMPER

TO SUPPLY

TERM POWER

JP3

JP2JP4

JP1

ADD JUMPER

TO DISABLE

TERMINATION

ADD JUMPER

TO SUPPLY

TERM POWER

JP3

JP2JP4

Controller 1

Controller 2

Release latch and pull cooling fan module

from the enclosure.


Channel 1

Channel 3

CH 3Channel 0

CH 0

Channel 2

Replacing the Cooling Fans 123


124


2 Remove the replacement cooling fan module from the shipping container

and inspect for obvious damage. Save the packaging material.

3 Verify that the jumper settings are the same as the cooling fan module being

replaced.

4 Align the cooling fan module with the open fan bay and push the module

into the enclosure until it completely seats.

The latch will reset when the module is completely seated.

The front bezel Fan Status LED will return to a normal state (green).

5 Using the packaging material from the replacement cooling fan module,

re-package and return the failed cooling fan module per your RMA

instructions.

Replacing the Cooling Fans



Replacing an AC Power Supply

1 Turn the On/Off switch to the “Off” position on the power supply.

If the dual power supply option is installed, the working power supply will

continue to supply sufficient power to keep the system operational while

you replace the failed power supply.

2 Disconnect the AC power cord. Release the power cord bale and pull the

cord from the AC power cord module on the power supply.

Releasing the Power Supply

JP7

ADD JUMPER

TO DISABLE

TERMINATION

ADD JUMPER

TO SUPPLY

TERM POWER

JP6

JP5

CNFG 1CNFG 2RAID

SPARE 1SPARE 2

BAUD SELDLY STRT

RMT STRT

JP8

ADD JUMPER

TO DISABLE

TERMINATION

ADD JUMPER

TO SUPPLY

TERM POWER

CHANNEL -1

CHANNEL -2

JP1

ADD JUMPER

TO DISABLE

TERMINATION

ADD JUMPER

TO SUPPLY

TERM POWER

JP3

JP2JP4

JP1

ADD JUMPER

TO DISABLE

TERMINATION

ADD JUMPER

TO SUPPLY

TERM POWER

JP3

JP2JP4

Channel 3

Controller 1

Controller 2


Channel 1

CH 3Channel 0

CH 0

Channel 2

JP7

ADD JUMPER

TO DISABLE

TERMINATION

ADD JUMPER

TO SUPPLY

TERM POWER

JP6

JP5

CNFG 1CNFG 2RAID

SPARE 1SPARE 2

BAUD SELDLY STRT

RMT STRT

JP8ADD JUMPER

TO DISABLE

TERMINATION

ADD JUMPER

TO SUPPLY

TERM POWER

CHANNEL -1

CHANNEL -2

JP1

ADD JUMPER

TO DISABLE

TERMINATION

ADD JUMPER

TO SUPPLY

TERM POWER

JP3

JP2JP4

JP1

ADD JUMPER

TO DISABLE

TERMINATION

ADD JUMPER

TO SUPPLY

TERM POWER

JP3

JP2JP4

Channel 3

Controller 1

Controller 2

Release latch and pull power supply

from the enclosure.Controller 2Controller 1

Channel 1

CH 3Channel 0

CH 0

Channel 2

Replacing an AC Power Supply 125


126


3 Using your thumb and fore finger, squeeze the power supply release latch

while pulling the power supply from the enclosure.

4 Remove the replacement power supply from the shipping container and

inspect for obvious damage. Save the packaging material.

5 Install the new power supply by sliding it into its open bay and ensuring it

seats completely and the release latch resets.

6 Re-connect the power cord.

Insert the power cord into the AC power cord module and secure it with the

power cord bale.

7 Turn the On/Off switch to the “On” position on the replacement power

supply.

NOTE: The front bezel Power Supply Status LED will return to a normal

state (steady green).

8 Using the packaging material from the replacement power supply, repackage

and return the failed power supply per your RMA instructions.

Replacing an AC Power Supply



Replacing a DC Power Supply

1 Turn the On/Off switch to the “Off” position on the affected power supply.

If the dual power supply option is installed, the working power supply will

continue to supply sufficient power to keep the system operational while

you replace the failed power supply.

2 Disconnect the DC power cable. Squeeze the connector latches and pull the

power cable from the DC power cable module on the power supply.

Releasing the Power Supply

JP7

ADD JUMPER

TO DISABLE

TERMINATION

ADD JUMPER

TO SUPPLY

TERM POWER

JP6

JP5

CNFG 1CNFG 2RAID

SPARE 1SPARE 2

BAUD SELDLY STRT

RMT STRT

JP8ADD JUMPER

TO DISABLE

TERMINATION

ADD JUMPER

TO SUPPLY

TERM POWER

CHANNEL -1

CHANNEL -2

JP1

ADD JUMPER

TO DISABLE

TERMINATION

ADD JUMPER

TO SUPPLY

TERM POWER

JP3

JP2JP4

JP1

ADD JUMPER

TO DISABLE

TERMINATION

ADD JUMPER

TO SUPPLY

TERM POWER

JP3

JP2JP4

Channel 3

Controller 1

Controller 2


Channel 1

CH 3Channel 0

CH 0

Channel 2

JP7

ADD JUMPER

TO DISABLE

TERMINATION

ADD JUMPER

TO SUPPLY

TERM POWER

JP6

JP5

CNFG 1CNFG 2RAID

SPARE 1SPARE 2

BAUD SELDLY STRT

RMT STRT

JP8ADD JUMPER

TO DISABLE

TERMINATION

ADD JUMPER

TO SUPPLY

TERM POWER

CHANNEL -1

CHANNEL -2

JP1

ADD JUMPER

TO DISABLE

TERMINATION

ADD JUMPER

TO SUPPLY

TERM POWER

JP3

JP2JP4

JP1

ADD JUMPER

TO DISABLE

TERMINATION

ADD JUMPER

TO SUPPLY

TERM POWER

JP3

JP2JP4

Channel 3

Controller 1

Controller 2

Release latch and pull power supply

from the enclosure.Controller 2Controller 1

Channel 1

CH 3Channel 0

CH 0

Channel 2

Replacing a DC Power Supply 127


128


3 Using your thumb and fore finger, squeeze the power supply release latch

while pulling the power supply from the enclosure.

4 Remove the replacement power supply from the shipping container and

inspect for obvious damage. Save the packaging material.

5 Install the new power supply by sliding it into its open bay and ensuring it

seats completely and the release latch resets.

6 Re-connect the DC power cable. Insert the power cable connector into the

DC power cable module. It secures when the connector’s latches reset.

7 Turn the On/Off switch to the “On” position on the replacement power

supply.

NOTE: The front bezel Power Supply Status LED will return to a normal

state (steady green).

8 Using the packaging material from the replacement power supply, repackage

and return the failed power supply per your RMA instructions.

Replacing a DC Power Supply



Replacing a Disk Drive

WARNING: To prevent operating failure or damage, observe the following:

Establish a ground for yourself by using the wrist grounding strap, or

by touching the metal chassis prior to handling or installing the

drives.

NOTE: There is no need to power Off the enclosure or the host computer

system. The drives are hot-swappable. Be careful of the “P-factor” effect

when removing a disk drive, which is the twisting of the drive in your

hand as a result of the spinning disk. Allow the drive to completely spin

down before removing it. Do this by pulling the drive slightly from its

locked position and allowing it to spin down, then remove the drive.

1 Identify the failed disk drive using the Drive Status LED. Refer to

“Troubleshooting” on page 109 and “Drive LEDs” on page 91.

2 Remove the front bezel.

3 Grasp the drive carrier handle and pull the disk drive from the enclosure.

Removing/Installing the Disk Drive

Sta tus andAct iv i t y LEDLi teP ipe

Tens ion C l ips

DiskDr ive

Dr ive Car r ie rLock

Car r ie r

Replacing a Disk Drive 129


130


The drive carrier has tension clips which ensures that the drive fits very tight.

It requires some force to remove or install the drive.

4 Remove the replacement disk drive from its shipping container and remove

the anti-static protection packaging.

Inspect the drive for obvious damage. Save the packaging material.

5 Install the replacement disk drive.

a Align the drive carrier with the rail grooves in the drive bay.

b Ensure that the drive seats completely. The drive carrier tension clips

ensure that the disk drive fits very tight, so it requires some force to push

the drive into its bay.

Installing the Disk Drive

6 Re-install and secure the front bezel. Using a Phillips screwdriver, rotate the

fasteners clockwise one-quarter turn to lock.

7 Using the packaging materials from the replacement disk drive, repackage

the failed drive and return it per your RMA instructions.

Replacing a Disk Drive



Replacing the SAF-TE Disk I/O or SCSI SAF-TE Clustering Card

WARNING: The SAF-TE Disk I/O or SCSI SAF-TE Cluster card is NOT HOT

SWAPPABLE. You must POWER DOWN the storage system to

replace this card.

1 Power down the storage enclosure, refer to “Powering Off the Storage

System” on page 80.

2 Locate the faulty SAF-TE Disk I/O or SCSI SAF-TE Cluster card.

3 Disconnect the SCSI data cables attached to the faulty card.

4 Loosen the two thumb screws that secure the card.

SAF-TE Disk I/O Card or SCSI SAF-TE Clustering Card

5 Using the handle, gently pull the card from the enclosure.

6 Note the position of the jumpers and the switch settings on the faulty card.

7 Remove the new replacement SAF-TE Disk I/O or SCSI SAF-TE Cluster card

from the shipping container and inspect for obvious damage. Save the

packaging materials.

8 Set the jumpers and switches to match the faulty card being replaced.

9 Insert the replacement card by aligning it into the rail guides and pushing the

card until it fully seats.

Tighten the two thumb screws. Do not overtighten the screws.

JP7

ADD JUMPER

TO DISABLE

TERMINATION

JP8

CNFG 1CNFG 2RAID

SPARE 1SPARE 2

BAUD SELDLY STRT

RMT STRT

ADD JUMPER

TO DISABLE

TERMINATION

CHANNEL -1

CHANNEL -2

RD

A0

1 2 3 4 5 6 7 8

A1

S0

S1

BD

DL

RM

UP



Channel 1

Channel 2

DOWN

Confi

gurat

ion1

Confi

gurat

ion2

RAID

Spare

1Sp

are2

BAUD

Rate

Selec

t

Delay

Drive

Start

Remote

Drive

Start

Replacing the SAF-TE Disk I/O or SCSI SAF-TE Clustering Card 131


132


Re-installing the SAF-TE Disk I/O Card or SCSI SAF-TE Clustering Card

10 Re-connect the SCSI data cables to the replacement SAF-TE Disk I/O or SCSI

SAF-TE Cluster card.

11 Power-on the enclosure. Refer to “Powering On the Storage System” on

page 80.

12 Using the packaging materials from the replacement card, repackage the

failed card and return it per your RMA instructions.

JP7

ADD JUMPER

TO DISABLE

TERMINATION

ADD JUMPER

TO SUPPLY

TERM POWER

JP6

JP5

CNFG 1CNFG 2RAID

SPARE 1SPARE 2

BAUD SELDLY STRT

RMT STRT

JP8ADD JUMPER

TO DISABLE

TERMINATION

ADD JUMPER

TO SUPPLY

TERM POWER

CHANNEL -1

CHANNEL -2

JP1

ADD JUMPER

TO DISABLE

TERMINATION

ADD JUMPER

TO SUPPLY

TERM POWER

JP3

JP2JP4

JP7

ADD JUMPER

TO DISABLE

TERMINATION

JP8

CNFG 1CNFG 2RAID

SPARE 1SPARE 2

BAUD SELDLY STRT

RMT STRT

ADD JUMPER

TO DISABLE

TERMINATION

CHANNEL -1

CHANNEL -2

Channel 1

Channel 2Controller 1

Controller 2


Channel 1

CH 0

Replacing the SAF-TE Disk I/O or SCSI SAF-TE Clustering Card



Replacing the Host SCSI I/O Card

WARNING: The Host SCSI I/O card is NOT HOT SWAPPABLE. You must POWER

DOWN the storage system to replace this card.

1 Power down the storage enclosure, refer to “Powering Off the Storage

System” on page 80.

2 Locate the faulty Host SCSI I/O card. Refer to “Troubleshooting” on page 109

for information on identifying the suspect card.

3 Disconnect the SCSI data cables attached to the faulty Host SCSI I/O card.

4 Loosen the two thumb screws that secure the card.

Host SCSI I/O Card

5 Using the handle, gently pull the Host SCSI I/O card from the enclosure.

6 Note the position of the jumpers on the faulty card.

7 Remove the new replacement Host SCSI I/O card from the shipping

container and inspect for obvious damage. Save the packaging materials.

8 Set the jumpers to match that of the faulty card being replaced.

9 Insert the replacement card by aligning it into the rail guides and pushing the

card until it fully seats.

Tighten the two thumb screws. Do not overtighten the screws.

JP1 ADD JUMPER

TO DISABLE

TERMINATION

ADD JUMPER

TO SUPPLY

TERM POWER

JP3

JP2JP4

Termination Jumpersfor Host Channels 0 and 3

Channel 0

Channel 3

I/O

Replacing the Host SCSI I/O Card 133


134


Re-installing the Host SCSI I/O Card

10 Re-connect the SCSI data cables to the replacement Host SCSI I/O card.

11 Power-on the enclosure. Refer to “Powering On the Storage System” on

page 80.

12 Using the packaging materials from the replacement card, repackage the

failed card and return it per your RMA instructions.

JP7

ADD JUMPER

TO DISABLE

TERMINATION

ADD JUMPER

TO SUPPLY

TERM POWER

JP6

JP5

CNFG 1CNFG 2RAID

SPARE 1SPARE 2

BAUD SELDLY STRT

RMT STRT

JP8ADD JUMPER

TO DISABLE

TERMINATION

ADD JUMPER

TO SUPPLY

TERM POWER

CHANNEL -1

CHANNEL -2

JP1

ADD JUMPER

TO DISABLE

TERMINATION

ADD JUMPER

TO SUPPLY

TERM POWER

JP3

JP2JP4

CH 3

CH 0

JP1

ADD JUMPER

TO DISABLE

TERMINATION

ADD JUMPER

TO SUPPLY

TERM POWER

JP3

JP2JP4

Controller 1

Controller 2


Channel 1

Channel 2

Replacing the Host SCSI I/O Card



Replacing a imageRAID Controller

NOTE: The imageRAID Controller is hot swappable.

1 Identify and locate the failed imageRAID Controller. Refer to

“Troubleshooting” on page 109.

imageRAID Controller 1 is the lower controller and imageRAID Controller 2 is

the upper controller.

Component Location

2 Remove the Controller Cover plate. Loosen the four thumb screws and pull

the plate from the enclosure.

3 Remove the faulty imageRAID Controller.

Pull out on the two latches that secure the controller. Using the latches as

handles, carefully pull the controller from the enclosure.

4 Install the new replacement imageRAID Controller into the enclosure. Secure

the controller by pressing the latches until the lock into place.

JP7

ADD JUMPER

TO DISABLE

TERMINATION

ADD JUMPER

TO SUPPLY

TERM POWER

JP6

JP5

CNFG 1CNFG 2RAID

SPARE 1SPARE 2

BAUD SELDLY STRT

RMT STRT

JP8ADD JUMPER

TO DISABLE

TERMINATION

ADD JUMPER

TO SUPPLY

TERM POWER

CHANNEL -1

CHANNEL -2

JP1

ADD JUMPER

TO DISABLE

TERMINATION

ADD JUMPER

TO SUPPLY

TERM POWER

JP3

JP2JP4

JP1

ADD JUMPER

TO DISABLE

TERMINATION

ADD JUMPER

TO SUPPLY

TERM POWER

JP3

JP2JP4


ControllerCover Plate Optional Dual

SCSI-to-SCSIimageRAID Controllers

Channel 1

CH 3

CH 3CH 0

CH 0

Channel 2

Replacing a imageRAID Controller 135


136


5 Access the AdminiStor software or the Disk Array Administrator software

using the VT-100 terminal; verify the replacement imageRAID Controller has

the correct firmware.

NOTE: Active-Active and Active-Passive dual imageRAID Controller require

the same version firmware on both controllers.

6 (Active-Active Mode) Access the AdminiStor software or the Disk Array

Administrator software using the VT-100 terminal; relinquish the partner

controller.

7 Using the packaging materials from the replacement controller, repackage the

failed controller and return it per your RMA instructions.

Replacing a “Killed” Controller When in Active-Active/Active-Passive Mode

If one controller detects that the other has a problem, it will kill it. The system

will log an event. If it is determined that the controller has a permanent failure,

then it must be replaced. Simply replace the defective controller and ensure that

the firmware on it is at the same level as the surviving controller. If required,

upload the correct firmware.

The new controller will complete its boot cycle and go to an online status.

Replacing a “Killed” Controller When in Active-Active/Active-Passive Mode



Replacing the Enclosure

WARNING: Printed circuit board components are sensitive to electrostatic

discharge. To prevent operating failure or damage, observe the

following: Establish a ground for yourself by using a wrist grounding

strap, or by touching the metal chassis prior to handling or installing

a printed circuit board component.

1 Remove your replacement enclosure from the shipping container and inspect

the shipment. Save the packaging material.

2 Power down the host computer and the storage enclosure(s).

Refer to the procedures described to power down the host computer system

in your user’s guide and “Powering Off the Storage System” on page 80 for

the enclosure.

NOTE: Mark or make a notation of the location of the data cables prior to

disconnecting or removing these items. To facilitate correct

installation, you may want to tag the cables appropriately.

3 Disconnect the SCSI data cables and power cords from the faulty storage

enclosure.

4 Remove the front bezel. Refer to “Removing the Front Bezel” on page 121 for

procedures to properly remove the bezel.

5 Remove each power supply. Refer to “Replacing an AC Power Supply” on

page 125 or “Replacing a DC Power Supply” on page 127.

6 Remove the cooling fan module.

7 If applicable, remove each imageRAID Controller, noting its position. Again,

you may wish to tag the controllers for proper installation. Refer to

“Replacing a imageRAID Controller” on page 135.

8 Remove the SAF-TE Disk I/O or SCSI SAF-TE Cluster card and if applicable

remove the Host SCSI I/O cards.

Note the position of the jumper settings and switch settings.

Replacing the Enclosure 137


138


9 Remove the defective storage enclosure.

a For Rack Installations. Reverse the installation procedures in Chapter 3,

“Installing the Storage System Enclosure into the Rack Cabinet” on

page 36.

OR

b For Deskside Tower Installations. Reverse the installation procedures in

Chapter 3, “Installing the Storage System into the Tower Stand” on

page 39.

10 Install the replacement storage enclosure.

a For Rack Installations. Follow the installation procedures in Chapter 3,

“Installing the Storage System Enclosure into the Rack Cabinet” on

page 36.

OR

b For Deskside Tower Installations. Follow the installation procedures in

Chapter 3, “Installing the Storage System into the Tower Stand” on

page 39.

11 Re-install the SAF-TE Disk I/O or SCSI SAF-TE Cluster card and if applicable

the Host SCSI I/O cards.

Set the jumper settings and switch setting to match those on the cards being

replaced.

12 Re-install the power supplies. Refer to “Replacing an AC Power Supply” on

page 125 or “Replacing a DC Power Supply” on page 127.

13 Re-install the cooling fan module.

14 If applicable, re-install the imageRAID Controllers in their proper slot

position (Controller 1 lower slot and Controller 2 upper slot). Refer to

“Replacing a imageRAID Controller” on page 135.

WARNING: Carefully seat the controller’s connector. The connector is

sensitive to alignment due to the number of pins in the

connector. Secure the controller by latching the latches.




15 Reconnect the SCSI data cables and power cords. Refer to the notations made

prior to removing the cables for their proper connection location.

16 Power on the storage enclosure(s) and then the host computer(s). Refer to

“Powering Off the Storage System” on page 80.

17 Verify that all systems are operating normally.

18 Access the AdminiStor software or the Disk Array Administrator software

using a VT-100 terminal; verify the replacement imageRAID Controller has

the correct firmware.

NOTE: Active-Active and Active-Passive dual imageRAID Controllers require

the same version firmware on both controllers.

19 Using the packaging materials from the replacement storage enclosure,

repackage and return the defective enclosure per your RMA instructions.

Replacing the Enclosure 139


140



Appendix A


Technical Information

Specifications

Technical Specifications for the imageRAID SCSI Series Storage System

Operating Environment Operating Non-Operating

+40°F to +95°F (+5°C to +35°C)-4°F to +158°F (-20°C to +70°C)

Relative Humidity Operating/Non-Operating 5% - 95% (non-condensing)

Power Requirements 100 - 240 VAC (auto-sensing)3.0 Amperes (maximum)50-60 Hz2 x 350 Watts

Dimensions (HxWxD) 3.47" x 17.65" x 20.25"

Weight (w/2 power supplies) 38.55 lbs w/o drives58.00 lbs with twelve drives

Altitude -200 to 10,000 feet

Number of Drives Supported 12 per enclosure

Total Capacity 876 gigabytes (73 GB Drives)

Host Interface Ultra320/160 SCSI

Drive Interface SCA-80 Ultra320/160 SCSI

I/O Interface RS-232 (Power Supply, Temperature, and Fan monitoring)

Electromagnetic Emissions Requirements (EMI) FCC, Part 15, Class A CISPR 22 EN55022-AVCCI, BSMI, C-TICK

141

Appendix A - Technical Information

142


Safety Requirements(in compliance with)

CAN/CSA C22.2 #60950-00UL 60950 3rd EditionCB IEC 60950 Edition 3

CE Compliance (EMC) 89/336/EEC EMC Directive

Shock Operating Non-Operating

1.0 G, 2 - 50 ms20.0 G, 2 - 20ms

Vibration Operating Non-Operating

5 - 500 Hz, 0.25 G (pk to pk)5 - 500 Hz, 1.0 G (pk to pk)

SCSI imageRAID Controller (JSS122)

Onboard CPU Mobile Pentium II 333 MHz, 256-KB on-chip L2 cache

Host/device data rate 160-MB/sec Ultra160 SCSI

Host interface channels Two 160-MB/sec Ultra160 SCSI Channel (1x3 or 2x2), the default is two channels

Device interface channels Two or three 160-MB/sec Ultra160 SCSI device channels; the default is two channels

SCSI protocol Narrow (8-bit) or Wide (16-bit): Fast (20MB/sec), Ultra (40MB/sec), Ultra2 (80MB/sec), Ultra160 (160MB/sec)

Advanced RAID features Active-active, host-independent failover/failback in the 2x2 configuration

Write-back data cache memory bus, 800 MB/sec bandwidth

On-line capacity expansionUp to 24 independent logical arrays per subsystemSpare pooling and dedicated spares; array verificationController/drive hot swap supportedArray status monitoring; adjustable stripe width;

automatic sector remappingUser-settable priority for array Reconstruct, Verify, Create,

and Expand operationsRAID levels 0, 1, 3, 4, 5, 10, 50

Advanced hardware features 64 MB to 512 MB, PC-133 compatible SDRAM DIMM, ECC protected

16 MB ECC protected onboard SDRAM processor memory

2 MB onboard Flash memory for upgradable firmwareIntegrated Nickel Metal Hydride (NiMH) cache battery

backup interface

Technical Specifications for the imageRAID SCSI Series Storage System

Specifications



Advanced SCSI features Full backward SCSI compatibility70 simultaneous commands and Command Queuing

supportedReserve/Release (multihost ready, up to 15 initiators with

single controller)Ultra160 SCSI for data transfer up to 160 MB/secUltra160 SCSI connection for up to 15 devices per

channel (14 in active-active mode)Domain validation and CRC data protection with Ultra160

Configuration and management AdminiStor or RS-232 serial interface to ANSI terminal or terminal emulator

Performance statistics monitoring; event logging, rebuild, and verify utilities

SAF-TE and SMART environmental monitoring supportAdminiStor support

Board form factor 4.25 in x 9.0 in PCB outline (10.80 cm x 22.86 cm)1.1 in (2.79 cm) total height with unbuffered DIMM, 1.2 in (3.05cm) with registered DIMM

Backplane connector 376 I/O pin AMP Z-Pack HM series

Power requirements +5.0Vdc, 6.0A typical, 8.0A max, ±5% input tolerance+12.0Vdc, 0.2A max (normal operation), 0.6A max

(battery charging), ±10% input tolerance

Battery backup 3-cell NiMH Battery Pack, with integrated thermistor and overcurrent fuse.

Temperature Normal Degraded Non-Operating

+5oC to +45oC0oC to +5oC and +45oC to +50oC-40oC to +100oC

Humidity Operating Non-Operating

10% to 85% noncondensing5% to 90% noncondensing

Air flow 10.0 cubic-ft/min. (CFM)

SCSI imageRAID Controller (JSS122)

Specifications 143


144


Specifications

Appendix B


Port Information

This appendix contains pin signal information about the connectors on the SAF-TE

Disk I/O card, SCSI SAF-TE Cluster card, and Host SCSI I/O card, and RS-232

Service ports.

VHD/CI SCSI Connectors

On each SAF-TE Disk I/O, SCSI SAF-TE Cluster card, and Host SCSI I/O card are

two VHD/CI SCSI port connectors. These connectors provide the input/output

interface from the storage enclosure bus to the host system.

VHD/CI Connector

VHD/CI Connector Pin Signals

Connector P1 Connector P2

Signal Name Pin Number Signal Name Pin Number

+DB(12) 1 +DB(12) 1

+DB(13) 2 +DB(13) 2

+DB(14) 3 +DB(14) 3

+DB(15) 4 +DB(15) 4

+DB(P1) 5 +DB(P1) 5

1 34

35 68

145

Appendix B - Port Information

146


+DB(0) 6 +DB(0) 6

+DB(1) 7 +DB(1) 7

+DB(2) 8 +DB(2) 8

+DB(3) 9 +DB(3) 9

+DB(4) 10 +DB(4) 10

+DB(5) 11 +DB(5) 11

+DB(6) 12 +DB(6) 12

+DB(7) 13 +DB(7) 13

+DB(P0) 14 +DB(P0) 14

GROUND 15 GROUND 15

DIFFSENS 16 DIFFSENS 16

TERMPWR 17 TERMPWR 17


RESERVED 19 RESERVED 19

GROUND 20 GROUND 20

+ATN 21 +ATN 21

GROUND 22 GROUND 22

+BSY 23 +BSY 23

+ACK 24 +ACK 24

+RST 25 +RST 25

+MSG 26 +MSG 26

+SEL 27 +SEL 27

+C/D 28 +C/D 28

+REQ 29 +REQ 29

+I/O 30 +I/O 30

+DB(8) 31 +DB(8) 31

+DB(9) 32 +DB(9) 32

+DB(10) 33 +DB(10) 33

+DB(11) 34 +DB(11) 34

-DB(12) 35 -DB(12) 35

-DB(13) 36 -DB(13) 36

-DB(14) 37 -DB(14) 37

-DB(15) 38 -DB(15) 38

-DB(P1) 39 -DB(P1) 39

-DB(0) 40 -DB(0) 40

-DB(1) 41 -DB(1) 41

-DB(2) 42 -DB(2) 42

-DB(3) 43 -DB(3) 43

-DB(4) 44 -DB(4) 44




VHD/CI SCSI Connectors



-DB(5) 45 -DB(5) 45

-DB(6) 46 -DB(6) 46

-DB(7) 47 -DB(7) 47

-DB(P0) 48 -DB(P0) 48

GROUND 49 GROUND 49

GROUND 50 GROUND 50



RESERVED 53 RESERVED 53

GROUND 54 GROUND 54

-ATN 55 -ATN 55

GROUND 56 GROUND 56

-BSY 57 -BSY 57

-ACK 58 -ACK 58

-RST 59 -RST 59

-MSG 60 -MSG 60

-SEL 61 -SEL 61

-C/D 62 -C/D 62

-REQ 63 -REQ 63

-I/O 64 -I/O 64

-DB(8) 65 -DB(8) 65

-DB(9) 66 -DB(9) 66

-DB(10) 67 -DB(10) 67

-DB(11) 68 -DB(11) 68




VHD/CI SCSI Connectors 147


148


SAF-TE Service Port

A service port is provided to access the SAF-TE processors and firmware using a

standard null-modem cable. Through this RS-232 service port you can use a

VT-100 terminal or emulation such as HyperTerminal, to access the onboard

firmware for monitoring and maintenance, and firmware update operations.

SAF-TE Service Port Pin Signals

imageRAID Controller Service Ports

Also located below the I/O card slots are two imageRAID Controller service

ports. They provide the serial interface to each controller allowing for firmware

updates, and access to the firmware-based Disk Array Administration software

using VT-100 terminal or emulation such as HyperTerminal. They are labeled

“CTRL 1” and “CTRL 2.” Below is the pin signals for these ports.

imageRAID Controller Service Port Pin Signals

1

1 NC

2 Rx

3 Tx

4 NC

5 Gnd

6 NC

7 NC

8 NC

9 NC

Pin Number Signal Name

2 3 4 5

6 7 8 9

CTRL 1 CTRL 2

1

1 NC

2 Rx

3 Tx

4 NC

5 Gnd

6 NC

7 NC

8 NC

9 NC


2 3 4 5

6 7 8 9

1

1 NC

2 Rx

3 Tx

4 NC

5 Gnd

6 NC

7 NC

8 NC

9 NC


2 3 4 5

6 7 8 9

SAF-TE Service Port



Null-Modem Cable

This cable, used to connect a terminal to the SAF-TE service port or the

imageRAID Controller service ports, is a DB-9 (female) to DB-9 (female)

null-modem type. Below is a pin-out for this cable.

DB-9 to DB-9 Null-Modem Cable Pin Signals

1

2

3

4

5

6

7

8

9

1

2

3

4

5

6

7

8

9

Null-Modem Cable 149


150


DC Power Supply Connector Pinout

CAUTION: If the enclosure is connected to a DC power feed source that is not

within the designated -48VDC range, damage might occur to the unit.

A DC power cable is included with the 48VDC Power Supplies and is used to

connect to a DC power feed system.

NOTE: Use only the DC power cables provided with the system.

Before connecting the cable to the source, be sure the wiring has the correct pin

out as indicated below. The connectors are Molex t ype, plug P/N 50-84-1060 and

female socket P/N 02-08-1002.

DC Cable Wiring Signals

Top Left + 48 VDC

Top Right + 48 VDC

Middle Left - 48 VDC

Middle Right - 48 VDC

Lower Left GND

Lower Right GND

Pin Signal Name

RED RED48VDC 48VDC

BLACK BLACK-48VDC -48VDC

GREEN/YELLOW GREEN/YELLOWGND GND

DC Power Supply Connector Pinout

Appendix C


Regulatory Information

Compliance Information Statement

We,

Fujitsu Europe Limited

Hayes Park Central

Hayes End Road

Hayes, Middlesex, England UB4 8FE

44-208-573-4444

declare under our sole responsibility that the product,

Type of Equipment: 12 Bay, Storage System Enclosure

Model Numbers: IRS-JBOD (imageRAID)

IRS-1U160xx-xx (imageRAID)

IRS-2U160xx-xx (imageRAID)

to which this declaration relates is in conformity with the Title 47 of the US Code

of Federal Regulations, Part 15 covering Class A personal computers and

peripherals.

Operation is subject to the following two conditions:

1 This device may not cause harmful interference, and

2 This device must accept any interference received, including interference that

may cause undesired operation.

151

Appendix C - Regulatory Information

152


FCC Class A Radio Frequency Interference Statement

This equipment has been tested and found to comply with the limits for a Class A

digital device, pursuant to Part 15 of the FCC rules. These limits are designed to

provide reasonable protection against harmful interference when the equipment

is operated in a commercial environment. This equipment generates, uses and

can radiate radio frequency energy, and if not installed and used in accordance

with the instruction manual, may cause harmful interference to radio

communications. Operation of this equipment in a residential area is likely to

cause harmful interference in which case the user will be required to correct the

interference at his own expense.

nStor Technologies is not responsible for any interference caused by

unauthorized modifications to this equipment. It is the user’s responsibility to

correct such interference. You are also warned, that any changes to this certified

device will void your legal right to operate it.

WARNING: Drives and controller/adapter cards described in this manual should

only be installed in UL-listed and CSA certified computers that give

specific instructions on the installation and removal of accessory

cards (refer to your computer installation manual for proper

instructions).

ATTENTION: Les lecteurs et cartes contrôleurs décrits ici ne doivent être montés

que sur des ordinateurs homologués (UL et CSA) et livrés avec des

manuels contenant les instructions d’installation et de retrait des

accessoires. Reportez-vous au manuel d’installation de votre

ordinateur.

FCC Class A Radio Frequency Interference Statement



Class A Taiwanese Statement

Class A Japanese Statement

CE Notice

Marking by the “CE” symbol indicates compliance of the device to directives of

the European Community. A “Declaration of Conformity” in accordance with the

above standards has been made and is available from nStor Technologies upon

request.

Class A Taiwanese Statement 153


154


Power Cord Selection

� This enclosure is intended for indoor use only.

� This enclosure is intended to be plugged into a 6A branch circuit in

Europe.

� To select the proper power cord:

For 110 Volt Operation – Use a UL Listed/CSA Labeled cord set consisting of

a minimum 18 AWG, type SVT or SJT three conductor cord, terminating in a

molded connector body having an IEC CEE-22 female configuration on one

end and a molded-on parallel blade grounding type attachment plug rated

15A, 125V configuration (5 - 15P) at the other end.

For 230 Volt Operation (North America) – Use a UL Listed/CSA Labeled cord

set consisting of a minimum 18 AWG, type SVT or SJT three conductor cord,

terminating in a molded connector body having an IEC CEE-22 female

configuration on one end and a molded-on tandem blade grounding type

attachment plug rated 15A, 250V configuration (6 - 15P) at the other end.

For 230 Volt Operation (Europe) – Use a cord set marked “HAR”, consisting

of a H05VV-F cord that has a minimum 0.75 square mm diameter conductors

provided with an IEC 320 receptacle and a male plug for the country of

installation rated 6A, 250V.

NOTE: The enclosure automatically selects the proper settings for the input

voltage. Therefore, no additional adjustments are necessary to connect the

unit to any input voltage within the range marked on the drive.

� Das Laufwerk sollte nicht im Freien verwendet werden.

� In Europa, sollte das Laufwerk an einen 6A-Stromkreis angeschlossen

werden.

� Zur Wahl des korrekten Netzkabels beachten Sie bitte folgendes:

230V-Betrieb (Europa) – Verwenden Sie Netzkabel der Bezeichnung “HAR”

die H05VV-F-Kabel und einen Leitungsdurchmesser von mindestens 0,75

mm2 aufweisen. Verwenden Sie eine IEC 320-Buchse und einen für das

Installationsland passenden Stecker, der auf 6A und 250V gesichert ist.

Power Cord Selection

Index


AAC Hot Swappable Power Supplies 4Active-Active Mode 26Active-Passive Mode 29Advanced hardware features 142Advanced RAID features 142Alarm Speaker 19, 92Annunciation LED Sample 96Attaching the Chassis Ears

Rack mount 38Tower 40

Attaching the Front Bezel 42Attaching the Power Cord Bales 43Attaching the Rails

Rack mount 37Tower 40

BBasic Connection Instructions

Topologies 63Battery 143Boot and POST Screens 83

CCabling DC Power Supplies 43CE Notice 153Channel Status LED 18, 90Clustering 32Commands Debug 107Communications parameters

Terminal program 82Compliance 151Component Identification 2Components

Channel Status LED 18, 90Cooling Fans 7

Drive Activity LEDs 92Drive Status LEDs 92Fan Status LED 18, 90Front Bezel 3Host SCSI I/O Card 13Power Supply 4Power Supply Status LED 18, 90Power-On LED 18, 90RAID Controllers 15SAF-TE Disk I/O Card 9SCSI SAF-TE Cluster Card 10Single Bus Module 14

ControllerProblems with 115

Controller Service Ports 16Cooling Fan Module 7Cooling Fans 7

DData Availability 32DC Cable Wiring Signals 150DC Hot Swappable Power Supplies 5DC Power Supply 5DC Power Supply Connector Pinout 150Dimensions 141Disk Array Administrator Software 82Disk Channel Error Codes 120Disk Channel Errors 119Disk Errors 118Drive Activity LEDs 92Drive Configuration

imageRAID - 12 Drives 54imageRAID - 24 Drives 56imageRAID - 36 Drives 59IRS-JBOD - 12 46IRS-JBOD - 24 51

155

156


Drive LEDs 19, 91Drive Spin-up Mode 12Drive Status LED is illuminated amber 115Drive Status LEDs 92Drives Supported 141

EEMC 142EMI 141Enclosure Component Identification 2Enclosure Component Monitoring 89Enclosure Monitoring SAF-TE 99Error messages 117

FFails to power on 109Fan Speed Control 105Fan Status LED 18, 90Fan Status LED is illuminated 115FCC Radio Frequency Interference Statement 152Front Bezel 3Front Bezel LEDs 93

GGeneral 109

HHost Cabling 63

Active-Active Single Port 69Active-Passive Dual Port 74Single Bus Clustering 76Stand-Alone Dual Port 66Stand-Alone Single Port 64

Host SCSI Channel Problems 113Host SCSI I/O Card 13

Replacing 133

IimageRAID Controller (JSS122)

specifications 142imageRAID Controller Firmware 86imageRAID Controller ports 16imageRAID Controller Service Ports 148imageRAID Controllers 15Installation

Rack Cabinet 36Tower 39

Installing Disk Drives 41

Interface Transfer Rate 141Interpreting the LEDs 115IRS-1U160xx-xx 151IRS-2U160xx-xx 151IRS-JBOD 151IRS-JBOD Configuration 46, 51

JJapanese Statement

Class A 153

LLED

Channel Status 18, 90Fan Status 18, 90Power Supply Status 18, 90

LED Matrix 93

MMenu System 84Mirrored Operations 31Model Numbers 151

NNull-modem

Cable 149Null-Modem Cable 149

OOnboard CPU 142One-Touch Annunciation 95Operating Environment 141Operating Modes Overview 21

PPin outs

VHD Connector 145Pin Signals

Controller service port 148Null-modem cable 149SAF-TE Service Port 148VHDCI 145

POST Screen 83Power Cord Bales 43Power Cord Selection 154Power Requirements 141Power Supply 4

DC 5

Index


Power Supply Status LED 18, 90Power Suppy Status LED is illuminated 115Power System 4Powering Off

Storage System 80Powering On

Storage System 80Power-On LED 18, 90Product Identification v

RRack Cabinet Installation 36RAID Controllers 15Relative Humidity 141Removing the Front Bezel 121Replacing a DC Power Supply 127Replacing a Disk Drive 129Replacing a Down Controller in Active-Active/

Active-Passive Mode 136Replacing an AC Power Supply 125Replacing the Cooling Fans 123Replacing the Enclosure 137Replacing the Host SCSI I/O Card 133Replacing the imageRAID Controller 135Replacing the SAF-TE Disk I/O Card 131RS-232 Service Ports 16

SSAFTE Commands Debug 107SAF-TE Disk I/O Card 9

Replacing 131SAF-TE Firmware 101SAF-TE RS-232 Service Port 148SAF-TE Service Port 16SCSI Bus Hangs 110, 111SCSI Device Channel Problems 113SCSI protocol 142SCSI SAF-TE Clustering Card

Replacing 131Securing the Chassis

Tower 40Sense Key Descriptions 118Service Ports 16Single Bus Module 14Specifications

imageRAID IRS-1U160 enclosure 141imageRAID IRS-2U160 enclosure 141imageRAID IRS-JBOD enclosure 141

SSCSI SAF-TE Cluster Card 10Stand-Alone Mode 23Status Indicator LEDs 18, 90

TTaiwanese Statement

Class A 153Technical Specifications 141Terminal screen problems 112Theory 21Tower Stand 39Troubleshooting

Common Problems 115Interpreting the LEDs 115SCSI BIOS hangs 110SCSI Bus Problems 109SCSI ID conflict 110

UUnlocking the Front Bezel 121Updating imageRAID Controller Firmware 86Upgrades 79Uploading Firmware 101

VVHD SCSI connectors 145VHD/CI SCSI Connectors 145VHDCI SCSI Connectors 145

WWarning events 116Weight 141

Index 157

158


Index


www.fel.fujitsu.com 91-9-94632001 (Y1)November 2003

Fujitsu Europe LimitedHayes Park CentralHayes End RoadHayes, Middlesex, England UB4 8FE44.208.573.4444

imageraid scsi series user's guide - fujitsu

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