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Veritas Storage Foundation™Manager Health CheckAdd-on User's Guide

UNIX

2.1

Storage Foundation Manager Health Check Add-onUser's Guide

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Documentation version 2.1.0

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Technical Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Chapter 1 About the Health Check Add-on . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

About Health Check Add-on .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11How the Health Check Add-on works .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Chapter 2 Configuring datacenter health check options . . . . . . . . . . . . . . . 15

About Health Check templates ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16About health checks ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17Reviewing the list of Health Check report templates ... . . . . . . . . . . . . . . . . . . . . . . . . 19Creating Health Check templates ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

New Template options .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21New Template Summary options .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Modifying Health Check templates ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22Edit Template options .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23Edit Template Summary options .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Deleting Health Check templates ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23Delete Template confirmation panel ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Associating hosts with templates ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24Select Hosts to Add to Include List options .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25Add Host to Include List Summary options .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Removing hosts associated with templates ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26Select Hosts to Remove from Include List options .... . . . . . . . . . . . . . . . . . . . . 27Remove Hosts from Include List Summary options .... . . . . . . . . . . . . . . . . . . . 28

Adding hosts to Exclude List ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28Select Hosts to Add to Exclude List options .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29Add Hosts to Exclude List Summary options .... . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Removing hosts from Exclude List ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30Select Hosts to Remove from Exclude List options .... . . . . . . . . . . . . . . . . . . . . 31Remove Hosts from Exclude List Summary options .... . . . . . . . . . . . . . . . . . . 31

Reviewing health checks associated with a template ... . . . . . . . . . . . . . . . . . . . . . . . . 32Configuring options for the health checks associated with a

template ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33Set Options options .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Turning off health checks ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Contents

Disable Checks options .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35Turning on health checks ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Enable Checks options .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36Removing items from the Acceptable List ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Select Objects to Remove from Acceptable List options .... . . . . . . . . . . . . . 37Remove Items from Acceptable List Summary options .... . . . . . . . . . . . . . . 38

Chapter 3 Managing health check reports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

About Health Check reports ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39About health check violations .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41Starting a new Health Check report ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Create New Storage Foundation Health Check Reportoptions .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Creating a new Health Check report ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45Specify Host to Run Report On options .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46Create New Storage Foundation Health Check Report Summary

options .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46Viewing Health Check report status ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47Canceling a Health Check report ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Delete Pending Report confirmation panel ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49Viewing completed Health Check reports ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Viewing differences between two Health Check reports ... . . . . . . . . . . . . . . 52Viewing the similarities between two Health Check reports ... . . . . . . . . 53Deleting Health Check reports ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54Viewing details of health check violations occurred on a

host ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55Viewing details of health check violations occurred for a

check .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57Marking health check violations as acceptable ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

Set Acceptable confirmation panel ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

Appendix A Health checks present in the Health CheckAdd-on . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

Health checks that belong to Availability ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61Health checks that belong to Performance .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65Health checks that belong to Utilization .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66Health checks that belong to Best Practices ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68The health checks that support Windows managed hosts ... . . . . . . . . . . . . . . . . . 72

Contents8

Appendix B Examples for using Storage Foundation healthchecks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

Example 1 – Enabling all DMP paths in your datacenter ... . . . . . . . . . . . . . . . . . . . 75Example 2 – Improving access time to a Storage Foundation volume

in your datacenter ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80Example 3 – Optimizing file system utilization on your Storage

Foundation hosts ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84Example 4 – Upgrading the Storage Foundation disk groups in your

datacenter to the latest version .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90

Chapter 4 Storage Foundation Manager resources . . . . . . . . . . . . . . . . . . . . . . . . 95

Storage Foundation Manager on the Web .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95Getting help .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95Using the product documentation .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96

Commenting on product documentation .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96

Storage Foundation Manager Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97

Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111

9Contents

Contents10

About the Health CheckAdd-on

This chapter includes the following topics:

■ About Health Check Add-on

■ How the Health Check Add-on works

About Health Check Add-onStorage Foundation Health Check Add-on lets you view the details of theconfiguration status of the managed hosts in your datacenter. The add-on performschecks to validate whether the Storage Foundation configuration in yourdatacenter conforms to a predefined standard.

Health Check Add-on provides the following capabilities:

■ Lets you generate the Health Check report that lists the details of the healthcheck violations that occurred in your datacenter.

■ Lists the details of the objects and hosts on which the health check violationoccurred.

■ Recommends the actions that you can perform to address a health checkviolation.

■ Lists the number of checks that are passed and the number of checks that arefailed.

■ Lets you mark a health check violation as acceptable such that it is not listedas a violation when you generate the report again.

■ Lets you compare two Health Check reports that are created using the sametemplate.

1Chapter

Health Check Add-on lets you do the following using the Storage FoundationHealth Check Wizard:

■ Configure the checks that you want to perform.

■ Specify one or more managed hosts in your datacenter to perform the checkson (optional).

■ Create a new Health Check report.

■ View, manage, and compare the Health Check reports.

As part of customizing the checks, you must create a new template and set theoptions for the checks in that template. You can use this template when you createa new Health Check report.

You can set the Health Check report as public such that other users can view it.Also, Health Check Add-on lets you print the Health Check report, save the HealthCheck report on your computer, and email the details of the report.

You can do one of the following to specify the managed hosts on which you wantto run the Health Check report:

■ Include specific hosts to the template that you use to create the report.

■ Exclude specific hosts from the template to avoid using them while yougenerate the Health Check report.

■ Specify the hosts in the wizard while specifying the details of a Health Checkreport.

You need to start a Health Check report manually. The time that is required forcollecting data to generate a Health Check report depends on the number of hostson which you want to perform the health checks.

You can run only one Health Check report at a time. The Health Check reportsthat you start later are queued-up to be processed.

Health Check Add-on lets you view the progress of the report that is processedcurrently. You can also view the summary and details of each completed HealthCheck report.

You can compare two Health Check reports that are created using the sametemplate. You can view the difference between two reports to see the violationsthat are reported after you generate the first report. You can view the similaritiesbetween two reports to see the violations that are reported in the first HealthCheck report, but still not resolved.

See “How the Health Check Add-on works” on page 13.

See “About Health Check templates” on page 16.

See “About Health Check reports” on page 39.

About the Health Check Add-onAbout Health Check Add-on

12

See “About health checks” on page 17.

See “About health check violations” on page 41.

See “Creating Health Check templates” on page 20.

See “Starting a new Health Check report” on page 42.

See “Turning off health checks” on page 34.

See “Turning on health checks” on page 35.

See “Configuring options for the health checks associated with a template”on page 33.

See “Associating hosts with templates” on page 24.

See “Adding hosts to Exclude List” on page 28.

See “Marking health check violations as acceptable” on page 58.

See “Canceling a Health Check report” on page 48.

See “Health checks that belong to Availability” on page 61.

See “Health checks that belong to Performance” on page 65.

See “Health checks that belong to Utilization” on page 66.

See “Health checks that belong to Best Practices” on page 68.

See “Example 1 – Enabling all DMP paths in your datacenter” on page 75.

See “Example 2 – Improving access time to a Storage Foundation volume in yourdatacenter” on page 80.

See “Example 3 – Optimizing file system utilization on your Storage Foundationhosts” on page 84.

See “Example 4 – Upgrading the Storage Foundation disk groups in your datacenterto the latest version” on page 90.

How the Health Check Add-on worksIn a Health Check report, you can view the configuration status of managed hosts.Most of the information that is required to generate the Health Check report isgathered from managed hosts. The Storage Foundation Health Check discoverymodule that is installed on the managed hosts gathers the data to generate theHealth Check report. Also, the Health Check Add-on uses the data that SF Managerhas collected and stored in its database. The data is processed in the ManagementServer and presented to you as the Health Check report.

On each managed host, a configuration file is specifically created for the HealthCheck report that you initiate. The configuration file contains all the options for

13About the Health Check Add-onHow the Health Check Add-on works

the discovery cycle for that report. When you initiate a new Health Check reporton a specific managed host, the discovery module triggers a new discovery cycleon the managed host to gather the details of its configuration.

The discovery module uses Storage Foundation commands and system commandsto get the details of the configuration of the managed hosts. The discovery modulepushes the information that it gathered using the commands to the SF Managercentral database. After the discovery is completed on all of the managed hoststhat you have specified, the component on the Management Server processes thatinformation. Then the discovery module consolidates the information in the formof a report. This report is presented to you.

In a managed host, the Health Check Add-on runs in the background at low priority.So the Health Check Add-on has a low affect on the performance of any applicationthat runs on that managed host.

See “About Health Check Add-on” on page 11.





About the Health Check Add-onHow the Health Check Add-on works

14

Configuring datacenterhealth check options


■ About Health Check templates

■ About health checks

■ Reviewing the list of Health Check report templates

■ Creating Health Check templates

■ Modifying Health Check templates

■ Deleting Health Check templates

■ Associating hosts with templates

■ Removing hosts associated with templates

■ Adding hosts to Exclude List

■ Removing hosts from Exclude List

■ Reviewing health checks associated with a template

■ Configuring options for the health checks associated with a template

■ Turning off health checks

■ Turning on health checks

■ Removing items from the Acceptable List

2Chapter

About Health Check templatesA Health Check template is the collection of customized options for each availablecheck. By default, a new Health Check template lists all the available checks. Fromthese checks, you can specify the checks that you want to perform on the managedhosts.

A template lets you do the following:

■ Include the managed hosts on which you need to perform checks.

■ Exclude managed hosts on which you do not want to perform checks.

■ Set options specific to each check.

■ Enable the checks that you want to use in the template.

■ Disable the checks that you do not want to use in the template.

If you want to create multiple reports using the same set of configuration optionsfor the checks, you can associate the same template with those reports. Later, youcan verify those reports to ensure that the violations that occurred are addressed.Also, you can view the new violations that are occurred, if any.






See “Modifying Health Check templates” on page 22.

See “Deleting Health Check templates” on page 23.





See “Removing hosts associated with templates” on page 26.


See “Removing hosts from Exclude List” on page 30.

Configuring datacenter health check optionsAbout Health Check templates

16

About health checksA health check is a rule that validates whether the Storage Foundationconfiguration in your datacenter conforms to a predefined standard. The checksavailable with Health Check Add-on cover four areas of the Storage Foundationconfiguration in your datacenter. This categorization of the checks helps youunderstand the scope of each check and the area that it targets. The following arethe health checks available with Health Check Add-on and the categories to whichthey belong:

Checks that belong to this category verify thatthe storage resources in the Storage Foundationconfiguration are set up so that they are resistantto failures. These checks also verify that you canrecover the storage resources quickly if a failureoccurs.

The following are the examples for the checks inAvailability category:

■ Large DRL

Large DRL checks whether or not the plex styleDirty Region Log (DRL) is larger than 32 KB.

■ Disk and Controller Failures

Disk and Controller Failures checks for diskand controller failures.

Availability

Checks that belong to this category verify thatthe storage resources in the Storage Foundationconfiguration are set up to perform efficiently.

The following are the examples for the checks inPerformance category:

■ I/O Access Time

I/O Access Time checks the output from vxstatto verify whether any volume has experiencedlong access time.

■ I/O Fragment

I/O Fragment checks whether or not the VxVMbuffer size is set to 10MB.

Performance

17Configuring datacenter health check optionsAbout health checks

Checks that belong to this category verify thatthe storage resources in the SF configuration areset up to use the available space optimally.

The following are the examples for the checks inUtilization category:

■ Underutilized Disks

Underutilized Disks checks to see if Disks inuse by Volume Manager are used efficientlyto store data.

■ Disk group spare Space

Disk group spare Space checks the disk groupsto see if the amount of spare disk space isadequate.

Utilization

Checks that belong to this category verify thatthe general practices or rules that improve theoverall Storage Foundation configuration areemployed.

The following are the examples for the checks inBest Practices category:

■ Single LUN Striping

Single LUN Striping checks whether or notthe stripe subdisks are on a single LUN.

■ Cross Enclosure Mirroring

Cross Enclosure Mirroring checks whether ornot the mirrored volume is spread acrossmultiple enclosures.

Best Practices

The Health Check Add-on lets you set the options for each check. By default, allthe checks in the template are in Enabled state. You can disable the checks in atemplate, if required.



See “Reviewing health checks associated with a template” on page 32.






Configuring datacenter health check optionsAbout health checks

18



Reviewing the list of Health Check report templatesIn the Configuration Options view, under All Available Templates, you can viewthe list of Health Check report templates that you have created.

You can view the following details of the Health Check report template displayedin a table:

■ Name of the Health Check report template.

■ Description that you have provided to the Health Check report template.

You can sort the table by the name of the Health Check report template.

From the Configuration Options view, under All Available Templates, you canperform the following tasks:

■ Creating the new Health Check report template.

■ Modifying the Health Check report template.

■ Deleting the Health Check report template.

■ Associating hosts with templates.

■ Removing hosts associated with templates.

■ Adding hosts to Exclude List.

■ Removing hosts from Exclude List.









19Configuring datacenter health check optionsReviewing the list of Health Check report templates

To review the list of Health Check report template

1 In the Add-ons view, underStorage Foundation Health Check, click ConfigureOptions link.

2 In the Configuration Options view, under All Available Templates, view thelist of Health Check report templates.

Creating Health Check templatesA Health Check template is the collection of customized checks. You can create anew template, which you can use when you create new Health Check reports. Ifyou want to create multiple reports using the same set of configuration optionsfor the checks, you can use the template to create those reports. The Health CheckAdd-on lets you create a new template that is based on an existing one. Thisfunction lets you create a set of templates for different types of configurationsor different set of hosts.

Note: By default, the Health Check Add-on contains the User Default templatethat lists all the available checks. All the checks in this template are in enabledstate.

By default, a newly created template lists all the health checks available with theHealth Check Add-on. It retains the configuration settings of the template onwhich it is based. You can modify these settings after you create the new template.

Before you create a Health Check report based on a specific template, make surethat you have modified the template configuration settings as required.




See “Reviewing the list of Health Check report templates” on page 19.



To create a Health Check template

1 In the Add-ons view, under Storage Foundation Health Check, click ConfigureOptions link.

2 In the Configuration Options view, under All Available Templates, click NewTemplate.

Configuring datacenter health check optionsCreating Health Check templates

20

3 In the New Template wizard panel, enter the details, and click Next.

See “New Template options” on page 21.

4 In the New Template Summary panel, view the details of the new template,and click Finish.

See “New Template Summary options” on page 21.

5 In the Results panel that confirms the successful creation of the new HealthCheck report template, click Ok.

New Template optionsUse this wizard panel to specify a unique name for the new Health Check templatethat you create. You can also add a description for the new template, if required.You must select an existing template, which you can use to create the new template.

Table 2-1 New Template panel options

DescriptionField

Name of the new template. You can reference thenew template with the name that you specify inthis field.

You can enter up to 128 alphanumeric charactersin this field. For languages with wide characters,you can enter up to 64 characters.

Name

Additional information that you want to includefor the new template. This field is optional.


Description

Existing template, which you can use to createthe new template. You can select the existingtemplate from this drop-down list.

By default, this field selects the User Definedtemplate.

Based on Template


New Template Summary optionsUse this wizard panel to view the summary of the details that you have specifiedfor the new template. You can verify the name, the description, and the base

21Configuring datacenter health check optionsCreating Health Check templates

template that you have specified for the new template. You can go back to theNew Template options panel and modify the details, if required.


Modifying Health Check templatesYou can modify the name and description of the Health Check template that youhave created. You can use the Edit Template panel and Edit Template Summarypanel to modify the template details.

Note: If you want to modify the settings other than the name and description ofthe template, you must do it from the the name _of_template view. To modify theconfiguration options, you can use the Set Options wizard panel in thename_of_template view. To modify the set of managed hosts that are associatedwith the template, you can use Add Hosts to Include List and Remove Hosts fromInclude List wizard panels.





To modify a Health Check template

1 In the Add-ons view, under Storage FoundationHealth Check, click ConfigureOptions link.

2 In the Configuration Options view, under All Available Templates, in the tablethat displays all the available templates, check the template that you wantto modify.

3 Under All Available Templates, click Edit Template.

4 In the Edit Template panel, modify the name and description of the template,and click Next.

See “Edit Template options” on page 23.

5 In the Edit Template Summary panel, view the details of the template thatyou have modified, and click Finish.

See “Edit Template Summary options” on page 23.

6 In the Results panel that confirms the successful modification of the templatedetails, click Ok.

Configuring datacenter health check optionsModifying Health Check templates

22

Edit Template optionsUse this wizard panel to modify the name and description of a template that youhave created.

Table 2-2 Edit template panel options

DescriptionField

Name of the template that you have selected. Youcan modify this name as required.


Name

Description of the template that you haveselected. You can modify this description asrequired.


Description


Edit Template Summary optionsUse this wizard panel to view the summary of the modifications that you havemade for a template. You can verify the modified name and description for thenew template. You can go back to the Edit Template options panel and update thedetails, if required.


Deleting Health Check templatesYou can delete the Health Check template that you have created from theConfiguration Options view. You need to check the template that you want todelete from the Configuration Options view. Then, you can select Delete Templatetask from the More task drop-down list to delete that template.

You cannot delete an existing template unless you remove all the Health Checkreports generated using that template. Before you delete a template, the DeleteTemplate confirmation panel asks you to remove all the Health Check reportsassociated with that template.

You cannot delete the User Default template.

23Configuring datacenter health check optionsDeleting Health Check templates




To delete the Health Check template


2 In the Configuration Options view, under All Available Templates, check theHealth Check template you want to delete.

3 Under All Available Templates, from the More task drop-down list, clickDelete Template.

4 In the Delete Template confirmation panel, click Yes.

See “Delete Template confirmation panel” on page 24.

5 In the Results panel that confirms the successful deletion of the template,click Ok.

Delete Template confirmation panelUse this wizard panel to confirm the removal of a Health Check report template.


Associating hosts with templatesYou can associate one or more managed hosts with the template that you havecreated. When you use the template to generate the Health Check report, thehealth checks are run only on the managed hosts that you have associated withthe template.

Note: If you do not want to perform the health checks on the managed hosts thatare associated with a template, you can specify the managed hosts while specifyingthe details for the Health Check report.

You can use the Select Host to Add to Include List panel and the Add Host toInclude List Summary panel to associate any managed host present in yourdatacenter with the template. Generally, you perform this task while defining atemplate. But, you can associate one or more managed hosts to the templatewhenever necessary.


Configuring datacenter health check optionsAssociating hosts with templates

24








To associate hosts to a template


2 In the Configuration Options view, under All Available Templates, check theHealth Check template with which you want to associate managed hosts.

3 Under All Available Templates, from the More task drop-down list, click AddHosts to Include List.

4 In the Select Host to Add to Include List panel, from the Hosts Available list,check the managed hosts that you want to associate with the template, andclick Next.

See “Select Hosts to Add to Include List options” on page 25.

5 In the Add Host to Include List Summary panel, view the details of themanaged hosts that you selected to associate with the template and clickFinish.

See “Add Host to Include List Summary options” on page 26.

6 In the Results panel that confirms the association of the managed host to thetemplate, click Ok.

Select Hosts to Add to Include List optionsUse this wizard panel to specify one or more managed hosts that you want toassociate with the template you have created. When you use this template togenerate the Health Check report, the health checks are performed on the managedhosts that you associate with it.

25Configuring datacenter health check optionsAssociating hosts with templates

Table 2-3 Select Hosts to Add to Include List options panel

DescriptionField

Managed hosts that are currently associated withthe template.

Hosts Currently Included

Text string on which you can filter the managedhosts that are available to associate with thetemplate. You can filter the available managedhosts by host name.

Filter

Managed hosts that you can select to associatewith the template. All compatible managed hostsin your datacenter is displayed here.

Hosts Available


Add Host to Include List Summary optionsUse this wizard panel to view the summary of one or more managed hosts thatyou have selected to associate with the template. The health checks are performedon these hosts when you generate the Health Check report using this template.You can go back to the Select hosts to Add to Include List panel and select anothermanaged host, if required.


Removing hosts associated with templatesYou can remove one or more managed hosts that you have associated with atemplate. You can use the Select Hosts to Remove from Include List wizard paneland the Remove Hosts from Include List Summary panel to remove the managedhosts from a Health Check report template.

The managed hosts that you remove from the template is added to the pool ofavailable hosts. When you use the template to generate Health Check reports afteryou remove the managed hosts from the template, the health checks are not runon the hosts that you have removed. If needed, you can associate the hosts withthe template later.





Configuring datacenter health check optionsRemoving hosts associated with templates

26



To remove hosts associated with a template


2 In the Configuration Options view, under All Available Templates, check theHealth Check template from which you want to remove the managed hosts.

3 Under All Available Templates, from the More task drop-down list, clickRemove Hosts from Include List.

4 In the Select Hosts to Remove from Include List panel, check one or moremanaged hosts that you want to remove from the template, and click Next.

See “Select Hosts to Remove from Include List options” on page 27.

5 In the Remove Host from Include List Summary panel, view the details of themanaged hosts that you selected to remove from the template, and clickFinish.

See “Remove Hosts from Include List Summary options” on page 28.

6 In the Results panel that confirms the removal of selected managed hostsfrom the template, click Ok.

Select Hosts to Remove from Include List optionsUse this wizard panel to specify one or more managed hosts that you want toremove from the template that you have created. When you use the template togenerate the Health Check report after removing the managed hosts from it, thehealth checks are not performed on the managed hosts that you have removedfrom the template.

27Configuring datacenter health check optionsRemoving hosts associated with templates

Table 2-4 Select Hosts to Remove from Include List panel options

DescriptionField

All the managed hosts that are currentlyassociated with the template. You can select thehosts that you want to remove from the template.

You can view the following details of a host thatare displayed in a table:

■ Name of the managed host

■ IP Address of the managed host

■ Architecture of the managed host

■ Operating system family of the managed host

■ Platform of the managed hosts

Hosts Available


Remove Hosts from Include List Summary optionsUse this wizard panel to view the summary of one or more managed hosts thatyou have selected to remove from the template. The health checks are notperformed on these hosts when you generate the Health Check report using thistemplate. You can go back to the Select Hosts to Remove from Include List paneland select another managed host, if required.


Adding hosts to Exclude ListYou can exclude one or more managed hosts from a template that you use togenerate the Health Check report. You can use the Select Hosts to Add to ExcludeList wizard panel and the Add Hosts to Exclude List Summary panel to excludethe managed hosts. When you exclude a managed host, the health checks are notperformed on that host.







Configuring datacenter health check optionsAdding hosts to Exclude List

28

To add hosts to Exclude List


2 In the Configuration Options view, under All Available Templates, check theHealth Check template from which you want to exclude one or more managedhosts.

3 Under All Available Templates, from the More task drop-down list, click AddHosts to Exclude List.

4 In the Select Hosts to Add to Exclude List panel, from the Hosts Availablelist, check the managed hosts that you want to exclude from the template,and click Next.

See “Select Hosts to Add to Exclude List options” on page 29.

5 In the Add Hosts to Exclude List Summary panel, view the details of themanaged hosts that you selected to exclude from the template and clickFinish.

See “Add Hosts to Exclude List Summary options” on page 30.

6 In the Results panel that confirms the exclusion of the managed hosts fromthe template, click Ok.

Select Hosts to Add to Exclude List optionsUse this wizard panel to specify one or more managed hosts that you want toexclude from running the health checks. The health checks are not performed onthe hosts that you exclude if they are part of the template that you use.

Table 2-5 Select Hosts to Add to Exclude List options panel

DescriptionField

The managed hosts that are currently excludedfrom running the health checks.

Hosts Currently Excluded

Text string on which you can filter the managedhosts that you want to add to Exclude List. Youcan filter the managed hosts by host name.

Filter

The managed hosts that you can select to excludefrom running the health checks. All managedhosts in your datacenter are displayed here.

Hosts Available


29Configuring datacenter health check optionsAdding hosts to Exclude List

Add Hosts to Exclude List Summary optionsUse this wizard panel to view the summary of one or more managed hosts thatyou have selected to exclude from running the health checks. The health checksare not performed on these hosts if they are associated with the template thatyou use to generate the Health Check report. You can go back to the Select Hoststo Add to Exclude List panel and select another managed host, if required.


Removing hosts from Exclude ListYou can remove a managed host, which you excluded from a template, from theexclude list. You can use the Select host to Remove from Exclude List wizard paneland the Remove Hosts from Exclude List Summary panel to remove a host fromthe exclude list. When you remove a host from the Exclude list, the host is againconsidered for generating the Health Check report. In other words, the healthchecks run on this host when you generate a Health Check report using thattemplate again.







To remove hosts from Exclude List


2 In the Configuration Options view, under All Available Templates, check theHealth Check template from which you want to remove one or more managedhosts from the Exclude List.

3 Under All Available Templates, from the More task drop-down list, clickRemove Hosts from Exclude List.

4 In the Select Hosts to Remove from Exclude List panel, from the HostsAvailable list, check the managed hosts that you want to remove from theExclude list, and click Next.

See “Select Hosts to Remove from Exclude List options” on page 31.

Configuring datacenter health check optionsRemoving hosts from Exclude List

30

5 In the Add Hosts to Exclude List Summary panel, view the details of themanaged hosts that you selected to remove from the Eclude List, and clickFinish.

See “Remove Hosts from Exclude List Summary options” on page 31.

6 In the Results panel that confirms the removal of the managed host from theExclude List, click Ok.

Select Hosts to Remove from Exclude List optionsUse this wizard panel to specify one or more managed hosts that you want toremove from the Exclude List. When you use the template to generate the HealthCheck report after removing the managed hosts from the Exclude List, the healthchecks are performed on those managed hosts too.

Table 2-6 Select Hosts to Remove from Exclude List panel options

DescriptionField

All the managed hosts that are currently includedin the Exclude List. You can select the hosts thatyou want to remove from the Exclude List.

You can view the following details of a host thatis displayed in a table:

■ Name of the managed host

■ IP Address of the managed host

■ Architecture of the managed host

■ Operating system family of the managed host

■ Platform of the managed host

Hosts Available


Remove Hosts from Exclude List Summary optionsUse this wizard panel to view the summary of one or more managed hosts thatyou have selected to remove from the Exclude List. The health checks areperformed on these hosts when you generate the Health Check report using thetemplate to which these hosts are associated. You can go back to the Select Hoststo Remove from Exclude List panel and select another managed host, if required.


31Configuring datacenter health check optionsRemoving hosts from Exclude List

Reviewing health checks associated with a templateA Health Check report template displays all the health checks associated with theHealth Check Add-on. You can modify the options of each health check as required.

You can view the following details of the health check displayed in a table:

■ Name of the health check

■ Category to which the health check belongs

■ Whether the health check is enabled.

■ Description of the function of the health check.

■ Whether the health check supports Windows managed hosts.

The following health checks support Windows managed hosts:

■ Unmounted File Systems.

■ Volume Stripe Unit Size.

■ Cross Enclosure Mirroring.

■ Large Mirrored Volume Mirrored DRL.

■ Stripe Volume Config.

■ Unused Volume.

■ Disk Connectivity.

■ Hot Relocation.

■ Disk Group Version.

■ Disk Group Spare Space.

■ Underutilized File Systems.

■ Underutilized Disks.

■ Disabled DMP Paths.

■ Large Mirrored Volume DRL.

■ Spread Volumes.





Configuring datacenter health check optionsReviewing health checks associated with a template

32



See “Removing items from the Acceptable List” on page 36.

See “The health checks that support Windows managed hosts” on page 72.

To review health checks associated with a template


2 In the Configuration Options view, under All Available Templates, click theHealth Check template of which the details you want to view.

3 In the template_name view, under All Available Checks, view the details ofthe health check associated with the template.

Configuring options for the health checks associatedwith a template

You can configure the health checks associated with the template that you havecreated. You can set the options to configure the health checks. You can set theoptions for only one health check at a time.

You can use the Set Options panel to set the options for the health checks. Theoptions vary for each health check associated with the template. So, the fields onthis panel vary based on the health check for which you want to set the options.

Note: You cannot set options for User Default template. You need to create a newtemplate if you want to modify the values that are set for User Default template.










33Configuring datacenter health check optionsConfiguring options for the health checks associated with a template

To configure options for a health check


2 In the Configuration Options view, under All Available Templates, click theHealth Check template in which you want to configure the options for thehealth checks.

3 In the template_name view, under All Available Checks, check the healthchecks for which you want to configure the options.

4 Under All Available Templates, click Set Options.

5 In the Set Options panel, modify the options as required, and click Yes.

See “Set Options options” on page 34.

6 In the Results panel that confirms that the options are set successfully, clickOk.

Set Options optionsUse this panel to set the options for the health checks. The options vary for eachhealth check associated with the template. So, the fields on this panel vary basedon the health check for which you want to set the options.

You can see the details of the health checks present in Health Check Add-on inthe section Health checks present in the Health Check Add-on.






Turning off health checksBy default, all the health checks present in a template are in the enabled state. Ifyou do not want to make one or more health checks active on a template, you needto disable them. You can use the Disable Checks wizard panel to disable healthchecks in a template. The health checks that you disable do not function whenyou use the template to generate the Health Check report next time.


Configuring datacenter health check optionsTurning off health checks

34





To turn off health checks


2 In the Configuration Options view, under All Available Templates, click theHealth Check template in which you want to turn off one or more healthchecks.

3 In the template_name view, under All Available Checks, check the healthcheck you want to turn off.

4 Under All Available Templates, from the More task drop-down list, clickDisable Checks.

5 In the Disable Checks panel, click Yes.

See “Disable Checks options” on page 35.

6 In the Results panel that confirms that the selected health checks are disabledsuccessfully, click Ok.

Disable Checks optionsUse this panel to confirm that you want to disable a health check in the template.


Turning on health checksIf you want to make one or more health checks active on a template, you need toenable them. You can use the Enable Checks wizard panel to enable the healthchecks that you have already disabled.





35Configuring datacenter health check optionsTurning on health checks


To turn on health checks


2 In the Configuration Options view, under All Available Templates, click theHealth Check template in which you want to turn on one or more healthchecks.

3 In the template_name view, under All Available Checks, check the healthchecks you want to turn on.

4 Under All Available Templates, click Enable Checks.

5 In the Enable Checks panel, click Yes.

See “Enable Checks options” on page 36.

6 In the Results panel that confirms that the selected health checks are enabledsuccessfully, click Ok.

Enable Checks optionsUse this panel to confirm that you want to enable a health check in the template.


Removing items from the Acceptable ListIn the Health Check report, you can select the health check violations and setthem as acceptable. When a health check violation is set as acceptable, the objecton which the violation has occurred (for example, disk, file system, etc.) is addedto the Acceptable List. The violation is no longer displayed in the Health Checkreports that you generate later. If you want to include this object in the HealthCheck report that you generate later, you need to remove it from the AcceptableList.

You can remove the items from the Acceptable List from the following views:

For a specific template, you can remove theitems from the Acceptable List.

Configuration Options view

For a specific health check, you can removethe items from the Acceptable List.

Template Name view

You can use Select Object to Remove from Acceptable List wizard panel andRemove Items from Acceptable List panel to perform this task.

Configuring datacenter health check optionsRemoving items from the Acceptable List

36





See “Viewing completed Health Check reports” on page 49.

To remove items from Exclude List

1 In the Add-ons view, under Storage Foundation Health Check, clickConfigure Options link.

2 In the Configuration Options view, under All Available Templates, do oneof the following:

■ Check the checkbox to select the Health Check template and click RemoveItems from Acceptable List from the More task drop-down list.

■ Click the name of the Health Check template, check the health check fromwhich you want to remove objects from the Acceptable List in theTemplateName view, and click RemoveItemsfromAcceptableList from the Moretask drop-down list.

3 In the Select Objects to Remove from Acceptable List options panel, selectthe objects that you want to remove from the Acceptable List, and click Next.

See “Select Objects to Remove from Acceptable List options” on page 37.

4 In the Remove Items fromAcceptableListSummary panel, view the detailsof the objects you want to remove from the Acceptable List, and click Finish.

See “Remove Items from Acceptable List Summary options” on page 38.

5 In the Results panel that confirms the removal of selected objects from theAcceptable List, click Ok.

Select Objects to Remove from Acceptable List optionsUse this wizard panel to select the objects that you want to remove from theAcceptable list. The objects are added to the Acceptable list when you set a healthcheck violation as acceptable in the Health Check report.

37Configuring datacenter health check optionsRemoving items from the Acceptable List

Table 2-7 Select Objects to Remove from Acceptable List panel options

DescriptionField

Objects that you can select to remove fromAcceptable List

You can view the following details of the objectsthat are listed in a table:

■ Name of the object that you can select toremove from the Acceptable List.

■ Type of the object that you select to removefrom the Acceptable List.

■ Managed host on which the object that youhave selected to remove from the AcceptableList is located.

Objects Available


Remove Items from Acceptable List Summary optionsUse this wizard panel to view the summary of objects that you have selected toremove from the Acceptable List. You can go back to the Select Objects to Removefrom Acceptable List panel and select another object, if required.


Configuring datacenter health check optionsRemoving items from the Acceptable List

38

Managing health checkreports


■ About Health Check reports

■ About health check violations

■ Starting a new Health Check report

■ Creating a new Health Check report

■ Viewing Health Check report status

■ Canceling a Health Check report

■ Viewing completed Health Check reports

■ Marking health check violations as acceptable

About Health Check reportsThe Health Check report displays the details of configuration status of the managedhosts. The report is generated using the information that the Storage FoundationHealth Check discovery module gathers and populates in the SF Manager database.Also, the information that SF Manager has already collected is used for generatingthe reports. It displays the result of each check that is performed. The report helpsyou view the details of each health check violation.

The time that is required to generate a Health Check report depends on thefollowing:

■ Number of managed hosts in your datacenter on which you want to performthe health check.

3Chapter

■ Number of the objects that are to be analyzed on each host.

You can run only one Health Check report at a time. If you want to generate morethan one Health Check report, they are queued to be processed.

You can use a predefined template while generating a Health Check report. Atemplate is associated with predefined set of health check options and hosts. Ifyou want to compare the statuses of configuration options, you need to generatea Health Check report multiple times without changing the context. In suchscenarios, you can use a template to ensure the consistency of context.

To compare two Health Check reports, you can use the following wizard panels:

■ View difference between two reports

■ View similarities between two reports

You can know the differences between the latest and the old Health Check reports.Health Check Add-on displays the health checks that are:

■ Failed in both the reports.

■ Failed in the latest report.

■ Failed in the old report, but do not appear in the latest report.

You can view the similarities between two Health Check reports to view theconditions that are persisting between two Health Check reports.

Before you generate the Health Check report, you can specify whether you needto make that report public so that other users can also view your report inread-only mode. Also, you can print the Health Check report, save the HealthCheck report on your computer, and send the details of the Health Check reportby email. If you want to run the report on a set of managed hosts different fromthe managed hosts that are associated with the template, you can specify themfrom the list of hosts present in your datacenter.

A Health Check report has two sections: a summary section and a detailed section.In the summary section, you can view the diagrammatic representation of theHealth Check report.

The following are the four types of summary reports. From these summary reports,you can delve into the details:

■ Checks Performed Summary

■ Checks by Host Summary

■ Violations by Category

■ Violations by Object Type

Managing health check reportsAbout Health Check reports

40

In the detailed section of the Health Check report, you can view the followingdetails:

■ Details of health check violations.

■ Details of the host on which the health checks are run.

■ Details of the health checks that are performed on the host.





See “Creating a new Health Check report” on page 45.

See “Viewing Health Check report status” on page 47.


See “Viewing differences between two Health Check reports” on page 52.

See “Viewing the similarities between two Health Check reports” on page 53.

See “Deleting Health Check reports” on page 54.


About health check violationsA health check violation occurs when a configuration option in a managed hostdoes not meet the condition that a corresponding health check sets for it. You canview the details of health check violations that occurred on the managed hosts inthe Health Check report.

The Health Check report lets you accept the health check violations. When yougenerate the Health Check report again, it does not display the violations thatyou have accepted. When you accept a health check violation, the objects on whichthat violation is reported are added to the Acceptable List. The violations that youremove from the Acceptable List are no longer considered as accepted violations.

The Health Check report recommends the appropriate remedial measures thatyou can use to address the health check violation. Also, the Health Check reportdirects you to the managed host on which the violations occurred.




41Managing health check reportsAbout health check violations



Starting a new Health Check reportYou can start a new Storage Foundation Health Check report to gather theinformation and generate a report on the configuration status of the managedhost that SF Manager manages. The health checks that constitute the HealthCheck Add-on are performed on the managed hosts to verify the configurationstatus of the managed hosts.

You can use the Create New Storage Foundation Health Check Report wizard panelto start a new Health Check report. In this panel, you can specify the templatethat you want to use to generate this Health Check report.

Also, you can specify the following settings:

■ Whether or not the report is public so that the other users can view it inread-only mode.

■ Whether or not you want to specify the managed hosts on which the healthchecks are to be performed. You can check Specify specific hosts to run theReport on option if you do not want the health checks to perform on themanaged hosts that are associated with the template.






To start a new Health Check report

1 In the Add-ons view, click StartnewStorageFoundationHealthCheck link.

2 In the Create New Storage Foundation Health Check Report wizard panel,enter the details and click Next.

See “Create New Storage Foundation Health Check Report options” on page 42.

Create New Storage Foundation Health Check Report optionsUse this wizard panel to specify the information that is required to create a newHealth Check report. You can identify the Health Check report with the name thatyou specify in this panel.

Managing health check reportsStarting a new Health Check report

42

Table 3-1 Create New Storage Foundation Health Check Report panel options

DescriptionField

Name of the Health Check report. You canreference the Health Check report with the namethat you specify in this field.


Name

The additional information that you want toinclude for the Health Check report. This field isoptional.


Description

The predefined template that you can select forthe Health Check report. By default, the UserDefault template is selected.

Template

43Managing health check reportsStarting a new Health Check report

Table 3-1 Create New Storage Foundation Health Check Report panel options(continued)

DescriptionField

To perform the Health Check report on all thehosts that are associated with the predefinedtemplate that you have selected in the Templatefield, select the All Hosts associated with theselected template option. By default, this optionis selected.

Note: If you have not associated any managedhosts with the predefined template, the HealthCheck report is performed on all the managedhosts that are added to Management Server.

To perform the Health Check report on thespecific managed hosts that are added toManagement Server, select the Choose from allHosts available option. You must specify themanaged hosts on which you want to perform theHealth Check report in the Specify Hosts to runReport on wizard panel.

To perform the Health Check report on thespecific managed hosts that are associated withthe predefined template, select the Choose fromHosts associated selected template option. Youmust specify the managed hosts on which youwant to perform the Health Check report in theSpecify Hosts to run Report on wizard panel.

Note: If you have not associated any managedhosts with the predefined template, the SpecifyHosts to run Report on wizard panel displays allthe managed hosts that are added to ManagementServer.

To perform the Health Check report on themanaged hosts that are associated with theapplication groups that you specify in thedrop-down list that appears near to this field,select the Choose fromHosts associatedwithanApplication Group option.

Run on Hosts

■ All Hosts associated with theselected template

■ Choose from all Hosts available■ Choose from Hosts associated

selected template■ ChoosefromHostsassociatedwith

an Application Group

Check this checkbox to enable other users of SFManager view the Health Check report inread-only mode.

Public

Managing health check reportsStarting a new Health Check report

44


Creating a new Health Check reportTo create a new Health Check report, you need to specify the managed hosts onwhich you want to perform the health checks. You can use the Specify Hosts toRun Report On wizard panel to specify the managed hosts. In the Create NewStorage Foundation Health Check Report Summary panel, you can view thesummary of the details that you have specified for the new Health Check report.

Note:The Specify Hosts to Run Report On panel is displayed only if you check theSpecify a specific set of hosts to run the Report on option in the Create NewStorage Foundation Health Check Report panel.

If you have not checked the Specify a specific set of hosts to run the Report onoption, the health checks are performed on any of the following sets of hosts:

■ All the available managed hosts in your datacenter.

■ Managed hosts that are specified in the Include List of the template that youuse to generate the report.

■ Managed hosts not specified in the Exclude List of the template.





To create a new Health Check report

1 In the Specify Hosts to Run Report On panel, check the managed hosts onwhich you want to perform the health checks and click Next.

See “Specify Host to Run Report On options” on page 46.

2 In the Create New Storage Foundation Health Check Report Summary panel,view the summary of the details that you have specified for the report andclick Finish.

See “Create New Storage Foundation Health Check Report Summary options”on page 46.

3 In the Results panel that confirms that the Health Check report is started,click Ok.

45Managing health check reportsCreating a new Health Check report

Specify Host to Run Report On optionsUse this wizard panel to select the specific set of hosts for which you want to runthe Health Check report.You need to select a minimum of one host in this panel.

Note: If you select the Choose from Hosts associated selected template optionin the Create New Storage Foundation Health Check Report wizard panel, thispanel displays the managed hosts that are associated with the predefined template.

Note: If you select the Choose fromHosts associatedwithanApplicationGroupoption in the CreateNewStorageFoundationHealthCheckReport wizard panel,this panel displays the managed hosts that are associated with the specifiedapplication groups.

This panel displays the details of the hosts in a table.

You can filter the table by any of the following columns:

■ Name

■ IP Address

■ Architecture

■ Family

■ Platform


Create New Storage Foundation Health Check Report Summary optionsUse this wizard panel to review the summary of the details that you specified fora Health Check report.

This panel displays the following details:

■ Name of the Health Check report that you specified

■ Additional information for the Health Check report that you provided

■ User template that you selected for the Health Check report

■ Whether or not the Health Check report is public

■ Hosts that you have specified for running the Health Check report, if any


Managing health check reportsCreating a new Health Check report

46

Viewing Health Check report statusStorage Foundation Health Check Report view displays the detailed status ofHealth Check reports.

You can access the Storage Foundation Health Check Report view by clicking anyof the following links from the Add-on view:

■ number_of_health_check_reports currently in progress

■ number_of_health_check_reports have been completed

Under Pending Reports, the Storage Foundation Health Check Report view displaysthe status of the report that is currently in progress. Under Completed Reports,you can view the details of the Health Check reports that are already completed.

Under Pending Reports, you can view the following details of the Health Checkreport that is in progress:

■ Name of the report.

■ Progress bar that shows the percentage of the report completed.

■ Estimated time that remains to complete the report.

You can cancel a Health Check report that is in progress, if required.

Under Completed Reports, you can view the following details of the Health Checkreports that are completed:

■ Name of the Health Check report.

■ Description that you have provided while starting a Health Check report.

■ User name of the user who created the report.

■ The predefined template that is based on which the Health Check report isgenerated.

■ Health check violations that are reported in that Health Check report.

■ Date and time at which the report is completed.

You can sort the table by the name of the completed report.

From the Storage Foundation Health Check Report view, you can perform thefollowing tasks on the completed Health Check reports:

■ Running the Health Check report again

■ Deleting the Health Check report.

■ Viewing difference between two health heck reports.

■ Viewing similarities between two Health Check reports.

47Managing health check reportsViewing Health Check report status

You can select one of the completed Health Check report and click the RerunReports button to run the selected report again.








To view the Health Check report status

1 In the Add-ons view, do one of the following to view the status of HealthCheck reports:

■ Click number_of_health_check_reports currently in progress link.

■ Click number_of_health_check_reports have been completed link.

2 In the Storage Foundation Health Check Report view, under Pending Reports,view the status of health checks that is in progress. Under Completed Reports,view the health checks that are completed.

Canceling a Health Check reportYou can cancel a Health Check report that is in progress if you do not want toproceed with that report. In the Storage Foundation Health Check Report view,under Pending Report, you can select the report in progress and click CancelReport. You can use Delete Pending Report wizard panel to confirm the cancellationof the Health Check report.




To cancel a Health Check report



Managing health check reportsCanceling a Health Check report

48


2 In the Storage Foundation Health Check Report view, under Pending Reports,view the status of Health Check report that is in progress, and click CancelReport.

3 In the Delete Pending Report panel, click Yes.

See “Delete Pending Report confirmation panel” on page 49.

4 In the Results panel that confirms the cancellation of the pending report,click Ok.

Delete Pending Report confirmation panelUse this panel to confirm that you want to cancel a report that is currently running.


Viewing completed Health Check reportsIn a Health Check report, you can view the details of the configuration status ofthe managed hosts. The Health Check report displays the details of the violationsthat occurred when the health checks are run on the hosts. In the Summary sectionof the Health Check report, you can view the summary of the health checkviolations that are represented diagrammatically. The detailed section of thereport displays the details of the health check violations.

From the pie diagrams that summarizes the configuration status, you can findmore details.

The following are the types of summary reports:

■ Checks Performed Summary

■ Checks by Host Summary

■ Violations by Category

■ Violations by Object Type

You can see the status of configuration under each of these summary reports.

The following sub-sections comprise the detailed portion of the Health Checkreport:

■ Violations

■ Host Summary

■ Check Summary

49Managing health check reportsViewing completed Health Check reports

The Violations section lists the health check violations that occurred when thechecks are performed on the managed hosts. The violations are listed in a tablewith the following columns:

Displays the name of the health check that isperformed.

Name

Displays the category to which the health checkbelongs.

Category

Displays the details of the object on which thehealth check violation occurred. You can click theobject to view its details in SF Manager Console.

Details

Displays the managed hosts on which the healthchecks are performed. You can click the host toview its details in SF Manager Console.

Host

Recommends the action that you can perform toaddress the health check violation.

Actions

You can sort the table by column headings.

If you want to set one or more health check violations as acceptable, you can checkthe name of the corresponding health check and click Set as Acceptable. By default,the Violations section displays all health check violations. You can view theviolations that are based on the category to which the health checks belong.

To view the violations that are based on the health check category, you can clickthe following links on top of the table:

■ Availability

■ Best Practices

■ Performance

■ Utilization

The Host Summary section lists the details of the managed hosts on which thehealth checks are performed. In this section, you can view the host details thatare displayed in a table with the following columns:

Displays the managed hosts on which the healthchecks are performed. You can click the host toview its details in SF Manager Console.

Host

Number of the health checks that are passed onthat host.

Passed

Managing health check reportsViewing completed Health Check reports

50

Number of the health checks that are failed onthat host. You can click this link to view all thehealth check violations for the host.

Violation


The Check Summary section lists the details of the health checks that areperformed on the managed hosts. In this section, you can view the details of thehealth checks that are displayed in a table with the following columns:

Displays the name of the health check that isperformed on the managed host.

Name

Number of the checks that are passed.Passed

Number of the checks that are failed. You canclick this link to view all the health checkviolations for the host.

Violation












See “Viewing details of health check violations occurred on a host” on page 55.

See “Viewing details of health check violations occurred for a check” on page 57.

To view completed Health Check reports





2 In the Storage Foundation Health Check Report view, under CompletedReports, click the Health Check report that you want to view.

3 In the name_of_report view, view the details of the health check violationsthat occurred on the managed hosts on which the health checks are performed.

Viewing differences between two Health Check reportsThe Health Check Add-on lets you view the difference between two Health Checkreports that are completed. You can view the details of the health check violationsthat are not common in both the reports.

For example, you can generate the Health Check report A to view the health checkviolations. You can resolve the violations that are present in report A. After aspecific period, you can generate the Health Check report by using the sametemplate. You can view the difference between reports A and B to view the newviolations that occurred after you generated report A.

In the Storage Foundation Health Check Reports view, under Completed Reports,you can select two reports to view the differences between them. You can use theView Differences Between Two Reports panel to view the differences between twoHealth Check reports.





To view the differences between two Health Check reports




2 In the Storage Foundation Health Check Report view, under CompletedReports, check the two Health Check report that you want to compare, andclick View Differences Between Two Reports.

3 In the View Differences Between Two Reports panel, view the differencebetween the two Health Check reports that you selected, and click Close.

See “View Differences Between Two Reports options” on page 53.


52

View Differences Between Two Reports optionsUse this panel to view the differences between two Health Check reports that arecompleted. This panel displays the details of the health check violations that arenot common in the reports that you compare. The details are displayed in a tablewith the column headings that are described in the following table:

Table 3-2 View Differences Between Two Reports panel options

DescriptionField

Name of the health check violation that isnot common in the Health Check reports thatyou compare.

Name

Host on which the health check violationoccurred.

Host

Details of the object on which the healthcheck violation occurred. You can click theobject to see its details in the SF ManagerConsole.

Details

Name of the Health Check report in whichthe violations are found.

Violation Found In


Viewing the similarities between two Health Check reportsThe Health Check Add-on lets you view the similarities between two Health Checkreports that are completed. You can view the details of the health check violationsthat are common in both the reports.

In the Storage Foundation Health Check Reports view, under Completed Reports,you can select the two reports to view the similarities between them. You can usethe View Similarities Between Two Reports panel to view the similarities betweentwo Health Check reports.






To view the similarities between two Health Check reports




2 In the Storage Foundation Health Check Report view, under CompletedReports, check the two Health Check reports that you want to compare, andclick View Similarities Between Two Reports.

3 In the View Similarities Between Two Reports panel, view the similaritiesbetween the two Health Check reports that you selected, and click Close.

See “View Similarities Between Two Reports options” on page 54.

View Similarities Between Two Reports optionsUse this panel to view the similarities between two Health Check reports that arecompleted. This panel displays the details of the health check violations that arecommon to both the reports. The details are displayed in a table with the columnheadings that are described in the following table:

Table 3-3 View Similarities Between Two Reports panel options

DescriptionField

Name of the health check violation that iscommon to both Health Check reports.

Name

Host on which the health check violationoccurred.

Host

Details of the object on which the health checkviolation occurred. You can click the object to seeits details in the SF Manager Console.

Details


Deleting Health Check reportsFrom the Storage Foundation Health Check Add-on view, you can delete a HealthCheck report that is completed. In the Storage Foundation Health Check Add-onview, under Completed Reports, you can select the Health Check report you wantto delete. Then, you can click Delete Report to remove the Health Check reportthat you have selected.


54





To delete Health Check reports


■ Click number_of_health_check_reportscurrently in progress link.


2 In the Storage Foundation Health Check Report view, under CompletedReports, check the Health Check report that you want to delete, and clickDelete Report.

3 In the Delete Completed Report panel, click Yes.

See “Delete Complete Report confirmation panel” on page 55.

4 In the Results panel that confirms the cancellation of the pending report,click Ok.

Delete Complete Report confirmation panelUse this panel to confirm the removal of a completed Health Check report.


Viewing details of health check violations occurred on a hostIn a Health Check report, in the Host Summary section, you can click the numberof violations in the Violations column to view the details of the health checkviolations that occurred on that host.

In theHost_Name view, under Violations, you can view the health check violationsthat occurred when the checks are performed on the managed host. The violationsare listed in a table with the following columns:

Displays the name of the health check thatis performed on the managed host.

Name

Displays the category to which the healthcheck belongs.

Category


Displays the details of the object on whichthe health check violation occurred. You canclick the object to view its details in the SFManager Console.

Details

Displays the name of the managed host onwhich the health checks are performed. Youcan click the host to view its details in theSF Manager Console.

Host

Recommends the action that you canperform to address the health checkviolation.

Actions


Also, you can click any of the following links that appear under Violations to viewthe health checks that belongs to a specific category:

■ Availability

■ Best Practices

■ Performance

■ Utilization

Also, you can mark one or more health check violations as acceptable.





See “Viewing details of health check violations occurred for a check” on page 57.

To view the details of health check violations occurred on a host






56

3 In thename_of_report view, under HostSummary, in the Violations column,click the number of violations that are dispalyed against a specific host.

4 In the name_of_host view, view the details of the health check violations thatoccurred on that host.

Viewing details of health check violations occurred for a checkIn a Health Check report, in the Check Summary section, you can click the numberof violations in the Violation column to view the details of the health checkviolations that occurred for a specific health check.

In the Check_Name view, under Violations, you can view the health checkviolations that occurred for that health check. The violations are listed in a tablewith the following columns:

Displays the name of the health check thatis performed on the managed host.

Name

Displays the category to which the healthcheck belongs.

Category

Displays the details of the object on whichthe health check violation occurred. You canclick the object to view its details in the SFManager Console.

Details

Displays the name of the managed host onwhich the health checks are performed. Youcan click the host to view its details in theSF Manager Console.

Host

Recommends the action that you canperform to address the health checkviolation.

Actions


Also, you can mark one or more health check violations as acceptable.





See “Viewing details of health check violations occurred on a host” on page 55.


To view details of health check violations occurred for a check





3 In thename_of_report view, under CheckSummary, in the Violation column,click the number of violations that are displayed against a specific healthcheck.

4 In the name_of_health_check view, view the details of the health checkviolations that occurred for that check.

Marking health check violations as acceptableYou can set one or more health check violations as acceptable from the Violationssection of the Health Check report. You must check the name of the correspondinghealth check and click Set as Acceptable.

When you set a violation as acceptable, the object on which that violation occurredis added to the Exclude List. The Health Check report that you generate later doesnot display the violation that you set as acceptable. If you want to view the violationagain, you need to remove the object on which that violation occurred from theExclude List.






To mark health check violations as acceptable



Managing health check reportsMarking health check violations as acceptable

58


2 In the Storage Foundation Health Check Report view, under CompletedReports, click the Health Check report on which you want to set the violationsas acceptable.

3 In the name_of_the_report view, under Violations, check the health checkviolations that you want to set as acceptable.

4 Under Violations, click Set as Acceptable.

5 In the Set Acceptable panel, click Yes.

See “Set Acceptable confirmation panel” on page 59.

6 In the Results panel that confirms the addition of the objects to Exclude List,click Ok.

Set Acceptable confirmation panelUse this panel to confirm that you want to set the health check violation asacceptable.


59Managing health check reportsMarking health check violations as acceptable

Managing health check reportsMarking health check violations as acceptable

60

Health checks present inthe Health Check Add-on

This appendix includes the following topics:

■ Health checks that belong to Availability

■ Health checks that belong to Performance

■ Health checks that belong to Utilization

■ Health checks that belong to Best Practices

■ The health checks that support Windows managed hosts

Health checks that belong to AvailabilityThe details of the health checks that belong to the Availability category aredescribed in the following table.

Table A-1 List of health checks that belong to Availability

Recommendedaction

Configurationoption and defaultvalue

DescriptionHealth check

The problem must bebecause of aninefficientconfiguration. Youneed to remove the logand create a newsmaller DRL.

Large DRL GreaterThan

Default value is 32KB

Checks whether theplex style dirty regionlog (DRL) is largerthan 32 KB

Large DRL

AAppendix

Table A-1 List of health checks that belong to Availability (continued)

Recommendedaction



If you create amirrored DRL, itspeeds recovery ofmirrored volumes aftera system crash. A DRLtracks those regionsthat have changed. ADRL uses the trackinginformation to recoveronly those portions ofthe volume that needto be recovered.Without a DRL,recovery isaccomplished bycopying the fullcontents of the volumebetween its mirrors.This process is lengthyand I/O intensive.

Large VolumeGreater Than (GB)

Default value is 500GB

Checks for largemirrored volumeswithout a mirroreddirty region log.

Large MirroredVolume MirroredDRL

Inspect the hardwareconfiguration toensure that it isfunctional andconfigured properly.

Not applicableChecks for disk andcontroller failures

Disk and ControllerFailures

Inspect the hardwareconfiguration toensure that it isfunctional andconfigured properly.

Timeout (seconds)

Default value is 100seconds.

Checks to see if thesystem detects anyhard disk errors.

Hard Disk Errors

You must repair yourroot mirrors.

Not applicableChecks to see that theroot mirrors are setup correctly. Rootvolshould be in anenabled state andmounted as root disk.

Root Validity

Health checks present in the Health Check Add-onHealth checks that belong to Availability

62


Recommendedaction



The configuration thatyou created finds itdifficult tounencapsulate duringroot disk upgrades. Itmust follow thestandard configurationguidelines.

Not applicableChecks that bootvolumes are simplemirrors. It alsocompares the volumedisk offset andpartition disk offsetand checks whetherthey are of samelength.

Boot VolumeGeometry

Fix your bootconfiguration.

Not applicableChecks thecompleteness of bootvolumes, such as root,swap, and var. Checksto see if the plex areat least equal to thevolume itself.

Boot VolumeCompleteness

The path is disabled. Itmust be enabled formaximum faulttolerance to pathfailure. The disabledpath indicates anunderlying hardwarecondition or someother error. Refer totheVxVMAdministratorsGuide for details onDMP configuration.

Not applicableChecks to see if thereare any disabled DMPpaths.

Disabled DMP Path

You must update theASLs or APMs on thehosts so they areconsistent with allhosts that access thearray.

Not applicableChecks that the hoststhat access an arrayhave the same OS.Also check thatStorage Foundationversion has the sameASL and APMversions betweenthem.

ASL/APM VersionConsistency

63Health checks present in the Health Check Add-onHealth checks that belong to Availability


Recommendedaction



Ensure that properASL is installed on thehost and that theenclosure is properlyconfigured. Refer tothe documentation onDMP for details onspecific steps.

Not applicableChecks that DDL andDMP properly claimthe enclosures.

DMP/DDLEnclosure Claim

The DMP restoredaemon must beconfigured similarly toother hosts thatconnect to the sameenclosure and use thesame StorageFoundation version.

Not applicableChecks that the DMPrestore daemon isconfiguredconsistently acrosshosts.

DMP RestoreDaemon

Make sure that allstorage in any failoverdisk groups areconnected to all nodesin the cluster.

Not applicableChecks to see if localdisk groups in ClusterServer clusters arevisible to all nodes.

Disk Connectivity

If these values do notmatch, you must adjustthe values in the/etc/vx/volboot file tomatch the system bootname.

Not applicableChecks that thesystem name in the/etc/vx/volboot file isthe same as the namethat was assigned tothe system when itwas started.

System Name

This feature increasesthe overall availabilityin case of disk failures.Turn on Hot Relocationif you want to takeadvantage of thisfunctionality.

Not applicableChecks whether HotRelocation is turnedon.

Hot Relocation



Health checks present in the Health Check Add-onHealth checks that belong to Availability

64



Health checks that belong to PerformanceThe details of the health checks that belong to the Performancecategory aredescribed in the following table.

Table A-2 List of health checks that belong to Performance

Recommendedaction


DescriptionHealth Check

Many reasons cancause long accesstimes to a volume.You must verify thatmultiple volumes donot use the sameunderlying physicalstorage. Also,consider an onlinerelayout to enhanceperformance if it isnot up to thestandard. Consult theVxVMAdministratorsGuide for furtherinformation.

Testing Time(seconds). Defaultvalue is 100.

Long AccessThreshold(microsecond).Default value is 25.

Checks the outputfromvxstat to verifywhether any volumehas experienced longaccess time.

I/O Access Time

This system has oneor more blockedprocesses. You mustinvestigate furtheron the system usingiostat or other suchtools to narrow downthe root cause.

Not applicableChecks to see if thesystem experiencesunacceptable I/O waits(blocked processes).

I/O Wait

Adjust vol_maxiosetting in/kernel/drv/vxio.confto 10MB

vol_maxio SettingCheck (MB)

Default value is 10MB.

Checks whether theVxVM buffer size isset to 10 MB.

I/O Fragment

65Health checks present in the Health Check Add-onHealth checks that belong to Performance





Health checks that belong to UtilizationThe details of the health checks that belong to the Utilization category aredescribed in the following table.

Table A-3 List of health checks that belong to Utilization

Recommendedaction



This disk is onlybeing usedminimally. Tomaximize utilization,you may want toconsolidate yourstorage to lessunderlying physicalstorage. Refer toVeritas VolumeManagerAdministratorsGuidefor details on movingvolumes.

Underutilized DiskThreshold(Percentage)

Default is 10%.

Check to see if disksin use by volumemanager are usedefficiently to storedata.

Underutilized Disks

If a disk group isflagged with thiscondition, you maywant to add morespare disks.

Required Free Space(%)

Default value is 20%.

Checks the diskgroups to see if theamount of spare diskspace is adequate.

Disk group spareSpace

Health checks present in the Health Check Add-onHealth checks that belong to Utilization

66

Table A-3 List of health checks that belong to Utilization (continued)

Recommendedaction



Check to see if theseobjects are indeedunused. If so, youshould reclaim thespace that they useby deleting them.

Not applicableChecks for anydisabled plexes,detached plexes,stopped volumes,disabled volumes,disabled logs, failedplexes, or volumesneeding recovery.

Unused VolumeComponents

You should check tosee if they areoccupying the spacethat could bereclaimed for otherpurposes.

Not applicableChecks for theunused volumes.

Unused Volumes

If these items are nolonger valid or if theyare in use, you needto reclaim theunderlying storageand use it.

Not applicableCheck s for filesystems with entriesin the fstab and thathave valid underlyingdevices, but notmounted.

Unmounted FileSystems

Shrink the filesystem to reclaimspace.

Underutilized FileSystem Threshold(Percentage)

Default is 10%.

Checks to see if filesystems are usedefficiently to storedata.

Underutilized Filesystems

Not applicableNot applicableChecks if DiskGroups have asufficient number ofconfiguration copies.

Disk GroupConfiguration Copies





67Health checks present in the Health Check Add-onHealth checks that belong to Utilization

Health checks that belong to Best PracticesThe details of the health checks that belong to the Best Practices category aredescribed in the following table.

Table A-4 List of health checks that belong to Best Practices

Recommendedaction



To take advantage ofthis portabilityfeature, upgrade thedisk group using thevxcdsconvert

command. Refer tothe VxVMAdministratorsGuidefor details.

Not applicableChecks for the diskgroups that can beupgraded to CDS tomaximize portabilitypotential.

Disk Groups withNon-CDS Disks

You must considerresizing the privateregion depending onyour projections forstorage in this group.

Not applicableChecks to see ifprivate region size isat least 32 MB forVxVM 5.0 andbeyond.

Disk Group PrivateRegion Size

The stripe subdisksin the stripe columnsshould be ondifferent subdisks.

Not applicableChecks whether ornot the stripesubdisks are on asingle LUN.

Single LUN Striping

These volumes mustbe mirrored becausea failure on any ofthe arrays can lead todata loss.

Not applicableChecks whether thevolume is spreadacross three or moreenclosures withoutbeing mirrored.

Spread Volumes

This is for faulttolerance purposes.Copies of data shouldlie in separateenclosures.

Not applicableChecks whether themirrored volume isnot spread acrossmultiple enclosures.

Cross EnclosureMirroring

Health checks present in the Health Check Add-onHealth checks that belong to Best Practices

68

Table A-4 List of health checks that belong to Best Practices (continued)

Recommendedaction



By using the latestversion, you ensurethat all of theproduct features areavailable. You canupgrade the diskgroup by using vxdgupgrade dgnameorthrough theAdminister link inthe SF Managerconsole

Not applicableChecks whether theversion number ofthe disk groupsmatch the version ofStorage Foundationinstalled.

Disk Group Version

Not applicableNot applicableCheck to see if thedisk group has thecurrent on diskconfiguration Size.

On Disk Config Size

A largemirrored-stripedvolume must bereconfigured to astriped-mirrorvolume usingrelayout.Reconfiguring themirrored-stripedvolume to thestriped-mirrorvolume improvesredundancy andenhances recoverytime after failure.

Largemirrored-stripeVolume (GB).

Default value is 1 GB.

Check for any largemirrored-stripevolumes that shouldbe converted to astriped-mirrorlayout.

LargeMirrored-Stripe

If the number ofcolumns in stripedvolumes exceeds themaximum specifiedvalue or less than theminimum specifiedvalue, you canre-layout the volume.

Narrow Point

Default value is 3.

Wide Point

Default value is 16.

Checks the numberof columns in stripedvolumes.

Stripe Volume Config

69Health checks present in the Health Check Add-onHealth checks that belong to Best Practices


Recommendedaction



You need to relayoutthis volume to fallwithin suggestedparameter.

Stripe Unit Size (KB)

Default value is 8.

Checks to see ifvolumes Stripe unitsize is withinsuggestedparameters.

Volume Stripe UnitSize

This file systemshould bedefragmented(fsadm) and upgraded(vxupgrade) to thelatest version unlessthis storage is beingmoved between hoststhat have an olderversion of VxFS. Youwill need to upgradeincrementally to eachversion: 4.x to 5.x to6.x. You cannot gotdirectly from 4.x to6.x.

Not applicableChecks whether thefile system versionmatchs the StorageFoundation installed.

File System Version

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70


Recommendedaction



If you create a DRL,it speeds the recoveryof mirrored volumesafter a system crash.A DRL tracks thoseregions that changed.A DRL uses thetracking informationto recover only thoseportions of thevolume that need tobe recovered.Without a DRL,recovery isaccomplished bycopying the fullcontents of thevolume between itsmirrors. This processis lengthy and I/Ointensive.

Large VolumeGreater Than (GB)

Default value is 500GB.

Checks for the largemirror volumeswithout a dirtyregion log (DCO orDRL)

Large MirroredVolume DRL

Split the disk group.Free Space Available(%)

Default value is 10%.

Checks if disk groupsconfigurationdatabase nears acritical point.

Disk GroupConfigurationDatabase

If you have only asingle configurationcopy, the chances oflosing your diskgroup configurationis more. You canmodify this value byusing the vxeditset nconfig

command on the diskgroup. Refer to theVxVMAdministratorsGuide for details.

Not applicableChecks whether thedisk groups haveonly a singleconfiguration copy.

Single Disk GroupConfiguration Copy

71Health checks present in the Health Check Add-onHealth checks that belong to Best Practices





The health checks that support Windows managedhosts

In SF Manager, the following health checks support Windows managed hosts:

Checks for file systems with entries in thefstab and that have valid underlying devices,but not mounted.

Unmounted File Systems

Checks to see if volumes Stripe unit size iswithin suggested parameters.

Volume Stripe Unit Size

Checks whether the mirrored volume is notspread across multiple enclosures.

Cross Enclosure Mirroring

Checks for large mirrored volumes withouta mirrored dirty region log.

Large Mirrored Volume Mirrored DRL

Checks the number of columns in stripedvolumes.

Stripe Volume Config

Checks for any potentially unused volumes.Unused Volumes

Checks whether the disks that are part of thelocal disk groups in Cluster Server clustersare visible to all nodes.

Disk Connectivity

Checks whether Hot Relocation status isappropriate.

Hot Relocation

Checks whether the version number of thedisk groups is the most recent that isavailable for the version of StorageFoundation installed.

Disk Group Version

Checks the disk groups to see if the amountof spare disk space is adequate.

Disk Group Spare Space

Health checks present in the Health Check Add-onThe health checks that support Windows managed hosts

72

Checks to see if file systems are usedefficiently to store data.

Underutilized File systems

Check to see if disks in use by volumemanager are used efficiently to store data.

Underutilized Disks

Checks to see if there are any disabled DMPpaths.

Disabled DMP Paths

Checks for the large mirror volumes withouta dirty region log (DCO or DRL).

Large Mirrored Volume DRL

Checks whether the volume is spread acrossthree or more enclosures without beingmirrored.

Spread Volumes


73Health checks present in the Health Check Add-onThe health checks that support Windows managed hosts

Health checks present in the Health Check Add-onThe health checks that support Windows managed hosts

74

Examples for using StorageFoundation health checks

This appendix includes the following topics:

■ Example 1 – Enabling all DMP paths in your datacenter

■ Example 2 – Improving access time to a Storage Foundation volume in yourdatacenter

■ Example 3 – Optimizing file system utilization on your Storage Foundationhosts

■ Example 4 – Upgrading the Storage Foundation disk groups in your datacenterto the latest version

Example 1 – Enabling all DMP paths in yourdatacenter

As a storage administrator, your primary responsibility is to ensure the availabilityof business critical applications and data. The non-availability of applications ordata can have an adverse impact on the business. For example, if you administerthe storage network of a major online stock market trading system and you failto ensure the availability of online trading application and data, it incurs heavyloses to businesses.

One of the methods to ensure the availability of applications and data to yourcustomers is to enable all the Dynamic Multipathing (DMP) paths to the storageassets in your datacenter. Active DMP paths ensure multiple I/O paths betweenservers and storage devices. Multiple I/O paths ensure the availability ofapplication and data to your customers.

BAppendix

The Health Check Add-on provides you with a centralized and a systematic methodto monitor whether all the DMP paths in your datacenter are enabled.

You can use the Health Check Add-on to do the following:

■ Pinpoint the disabled DMP paths in your datacenter .

■ Drill down to view the details that are associated with the disabled DMP paths

■ Learn how to enable the DMP paths

After you install the Health Check Add-on, you access it within the SF Managerconsole. In the SF Manager console, click the Add-ons tab. Under the StorageFoundation Health Check heading, you can access the following features of theHealth Check Add-on:

To create a Health Check reportStart new Storage Foundation Health Check.

To create a Health Check templateConfigure Options

To view the progress of Heath Check reportNumber of Report(s) have been completed(Number of reports New)

Number of Report(s) currently in progress

If there are no reports that are currently inprogress, the No Reports currently inProgress link displays.

To view the completed Health Check reportsNumber of Report(s) have been completed(Number of reports New).

If there are no reports that are completed,the No Reports have been completed linkdisplays.

The following example describes how you can use the Health Check Add-on toverify whether the DMP paths on a Storage Foundation host are enabled. You canuse the Disabled DMP Paths health check to verify whether the DMP paths areenabled.

Note: You can perform the Disabled DMP Paths health check on all supportedmanaged hosts.

To perform the Disabled DMP Paths health check, you do the following:

■ Create a Health Check report.

Examples for using Storage Foundation health checksExample 1 – Enabling all DMP paths in your datacenter

76

Note: You can use the User Defined template to create a Health Check report.By default, all the health checks in the Health Check Add-on are enabled. Youcan enable or disable the health checks in the User Defined template asrequired.

For additional information on how to starta new Health Check report, See “Startinga new Health Check report” on page 42.

Start a new Health Check report that usesthe User Defined template.

For additional information on how tocreate a Health Check report, See “Creatinga new Health Check report” on page 45.

Create the Health Check report.

You can specify the Storage Foundationhost on which you want to perform theDisabled DMP paths health check.

For additional information on how to viewthe number of violations, See “ViewingHealth Check report status” on page 47.

View the number of violations that occuron the Storage Foundation host that arelisted in the completed Health Checkreport.

■ Interpret the Health Check report results.

77Examples for using Storage Foundation health checksExample 1 – Enabling all DMP paths in your datacenter

In the Health Check report, you can viewthe health check violations that occurredon the DMP paths.

View the following details of the violationthat occur on the DMP paths:

■ Name of the health check that isperformed on the managed host. In thisexample, the field displays DisabledDMP Paths.

■ Category to which the health checkbelongs. In this example, the fielddisplays Availability.

■ Details of the disk on which theviolation occurred. You can click thelink in this field to view the details ofthe disk and perform the requiredaction to enable the DMP paths.

■ Name of the Storage Foundation hoston which you performed the healthcheck. You can click the name of thehost to view the details of the host.From the host details view, you canperform the required action to enablethe DMP paths.

■ The action that you must perform toresolve the problem. You can click theAction icon to view the descriptionabout the violation.

For additional information on how to viewcompleted Health Check report, See“Viewing completed Health Check reports”on page 49.

■ Resolve the problem by enabling the DMP paths on the Storage Foundationhost.

In the SF Manager console, you can do the following to enable all the DMP paths:

■ From the Details field or the Host field of the Health Check report, navigateto the disk overview view and click the Administer link. In the disk detailsview, enable the DMP paths.

■ In the Add-ons view, use the Storage Foundation Manager DynamicMultipathing Add-on Storage Foundation Manager Dynamic MultipathingAdd-on to enable the DMP paths if you have any pending array maintenancecases.

■ In the Details field, do the following:

Examples for using Storage Foundation health checksExample 1 – Enabling all DMP paths in your datacenter

78

Click the link in the Details field to viewthe disk overview view.

For additional information on how to viewthe overview of a disk, see StorageFoundation ManagerWebGUIHelp.

For additional information on how to viewthe paths to the disk and to enable thepaths, see Storage Foundation ManagerWebGUIHelp.

In the disk overview view, click theAdminister link and click Paths.

In theName of diskDisk Details – name ofhost view, under Paths to Disk, select theDMP path that you must enable and clickEnable. In the Enable Path Summarywizard panel, click Finish.

■ In the Host field, do the following:

For additional information on how to viewthe overview of a host, see StorageFoundation ManagerWebGUIHelp.

Click the name of the host in the Detailsfield to view the host overview view.

For additional information on how to viewthe disks of a host, see Storage FoundationManagerWebGUIHelp.

In the Name of host view, click Disks.

Under Disks, check the row thatrepresents the disk on which you want toenable the DMP paths and click the diskname in the Device field.

For additional information on how to viewthe paths to a disk, see StorageFoundationManagerWebGUIHelp.

In the Name of disk Overview view, clickAdminister and click Paths.

For additional information on how toenable the paths, see Storage FoundationManagerWebGUIHelp.

In theName of diskDisk Details – name ofhost view, under Paths to Disk, select theDMP path that you must enable and clickEnable. In the Enable Path Summarywizard panel, click Finish.

■ In the Add-ons view, do the following:

For additional information on how to usethe Storage Foundation Manager DynamicMultipathing Add-on, seeUsing theStorageFoundation™Manager DynamicMultipathing Add-on.

In the Add-ons view, under CentralizedDMPStateManagement, access the StartnewCentralizedDMPStateManagementcase link to enable the DMP paths on theStorage Foundation hosts.

79Examples for using Storage Foundation health checksExample 1 – Enabling all DMP paths in your datacenter

Also, the Health Check Add-on lets you define a template that you can use togenerate the Health Check report. You must create a template only if you wantto do any or all of the following:

■ Differentiate the specific health checks to perform on the managed hosts andreuse them later.

■ Configure the health check options.

Alternatively, you can use the menu item 18 (Allow multipathingorUnsuppressdevices from VxVM’s view) from the vxdiskadm main menu to enable DMP pathsto a disk. Also, you can use the vxdmpadm command to enable specific paths. Foradditional information on how to enable the DMP paths to a disk, see VeritasVolumeManager Administrator’s Guide.



Example 2 – Improving access time to a StorageFoundation volume in your datacenter

As a storage administrator, you must ensure that the Storage Foundation volumesin your datacenter do not experience long I/O access times. An increase in theworkload on a volume can delay the I/O access. The delay in I/O access can havea negative impact on the performance of the storage assets and applications inyour datacenter. For example, if you administer the storage network of ane-commerce transaction system and fail to address the long I/O access time thatthe seasonal surge in transaction causes, it can have a negative impact on thebusiness.

The Health Check Add-on provides you a centralized and a systematic method tomonitor whether the volumes experience long I/O access time.


■ Pinpoint the volume that experiences long I/O access time.

■ Drill down to view the details of the volume.

■ Learn how to improve the I/O access time.


To create a Health Check report.Start new Storage Foundation Health Check.

Examples for using Storage Foundation health checksExample 2 – Improving access time to a Storage Foundation volume in your datacenter

80

To create a Health Check template.Configure Options.

To view the progress of Heath Check report.Number of Report(s) currently in progress.


To view the completed Health Check reports.Number of Report(s) have been completed(Number of reports New)


The following example describes how you can use the Health Check Add-on toverify whether the volumes that are associated with a Storage Foundation hostexperience long I/O access time. You can use the I/O Access Time health checkto verify whether the volumes that are associated with a Storage Foundation hostexperience long I/O access time.

Note:

You can perform the I/O Access Time health check on all supported managedhosts.

To perform the I/O Access Time health check, you do the following:


Note: You can use the User Default template to create a health check report.By default, all the checks in the Health Check Add-on are enabled. You canenable or disable the checks in the User Default template as required.


Start a new Health Check report that usesthe User Default template.



You can specify the Storage Foundationhost on which you want to perform the I/OAccess Time health check.

81Examples for using Storage Foundation health checksExample 2 – Improving access time to a Storage Foundation volume in your datacenter


View the number of violations that occuron the Storage Foundation hosts that arelisted in the completed Health Checkreport.

■ Interpret the Health Check report result.

For more details on how to view completedHealth Check report, See “Viewingcompleted Health Check reports”on page 49.

In the Health Check report, you can viewthe health check violations that indicatethe volumes that experience long I/Oaccess time.

View the following details of the violationsthat indicate the volumes that experiencelong I/O access time:

■ Name of the health check that isperformed on the managed hosts. Inthis example, the field displays I/OAccess Time.

■ Category to which the health checkbelongs. In this example, the fielddisplays Performance..

■ Details of the volume on which theviolation occurred. You can click thelink in this field to view the details ofthe volume and perform the requiredaction to improve the I/O access time.

■ Name of the Storage Foundation hoston which you performed the healthcheck. You can click the name of thehost to view the details of the host.From the host details view, you canperform the required action to improvethe I/O access time


■ Resolve the problem by improving the I/O access time on the StorageFoundation host.

In the SF Manager console, you can move the volume to its physical storage or toa faster storage device to improve the I/O access time. From the Details field orthe Host field of the Health Check report, you can navigate to the volume details

Examples for using Storage Foundation health checksExample 2 – Improving access time to a Storage Foundation volume in your datacenter

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view and click the Administer link. In theNameof volumeVolume Details –Nameofhostview, from the left panel, you can click the Move link to perform the Movinga volume task.


For additional information on how to viewthe overview of a volume, see StorageFoundation ManagerWebGUIHelp.

Click the link in the Details field to viewthe volume overview view.

For additional information on how to viewdisks for a volume, see StorageFoundationManagerWebGUIHelp.

In the volume overview view, click theAdminister link.

For additional information on how to movea volume, see StorageFoundationManagerWebGUIHelp.

In the Name of volume Volume Details –Name of host view click the Move link onthe left side panel, enter the details in theMove Volume wizard panel, and clickFinish.



Click the name of the host in the Host fieldto view the host overview view.

For additional information on how to viewthe disk groups of a host, see StorageFoundation ManagerWebGUIHelp.

In the Name of host view, click Volumes.

Under Volumes, check the row thatrepresents the volume whose I/O accesstime you want to improve. In the Namefield, click the name of the volume.

For additional information on how to viewthe overview of the volume, see StorageFoundation ManagerWebGUIHelp.

In the Overview view of the volume, clickAdminister.

For additional information on how to movea volume, see StorageFoundationManagerWebGUIHelp.

In the Name of volume Volume Details –Name of host view click the Move link onthe left side panel, enter the details in theMove Volume wizard panel, and clickFinish.

Also, the Health Check Add-on lets you create a template that you can use togenerate the Health Check report.

You must create a template only if you want to do any or all of the following:

83Examples for using Storage Foundation health checksExample 2 – Improving access time to a Storage Foundation volume in your datacenter



For example, create a template if you want to configure the options for the I/OAccess Time health check.

For additional information on how to createa template, see Creating Health Checktemplates.

Create a new Health Check template.

For additional information on how toconfigure the options for a health check, seeConfiguring options for the health checksassociated with a template.

For additional information about the I/OAccess Time health check, see Health checksthat belong to Performance.

Configure options for the I/O Access Timecheck.

Modify the Test Time and the Long AccessTime Threshold values. By default, the TestTime field displays 100 seconds and the LongAccess Time Threshold field displays 25microseconds .

Alternatively, you can use the following commands to improve the I/O accesstime:

To display the I/O statistics. You canunderstand how to reconfigure the systemto improve the I/O access time.

vxstat

To move the volume.vxassist move

To perform online re-layout of a volume.vxassist relayout

To convert between a layered volume and anon-layered volume layout.

vxassist convert

For additional information on how to tune the performance of volumes, seeVeritasVolumeManager Administrator’s Guide.



Example 3–Optimizing file systemutilization on yourStorage Foundation hosts

As a storage administrator, you must ensure that you are effectively and efficientlyuse your storage assets. If you over-utilize your storage assets, you can create

Examples for using Storage Foundation health checksExample 3 – Optimizing file system utilization on your Storage Foundation hosts

84

unnecessary risks. For example, if you manage the storage assets for a majorairline and you over-utilize the file system on the host that controls the electronicairline ticket reservation system of your company, the performance of the systemcould be compromised. If the performance of the system degrades, transactiondelays could occur and it could have a negative impact on the business. Alternately,if you under-utilize the file system on this same host, you must be wasting theallocated storage that you can use for other applications that actually need it.

The Health Check Add-on provides you with a centralized and a systematic methodto monitor whether the storage assets are under-utilized.


■ Pinpoint under-utilized storage assets.

■ Drill down to view the details that are associated with the storage asset.

■ Learn how to resolve the under utilization problem of storage assets.








The following example describes how you can use the Health Check Add-on toverify whether the file system on a Storage Foundation host is used efficiently tostore data. You can use the Underutilized File systems health check to verifywhether the file system on a Storage Foundation host is used efficiently to storedata.

Note: You can perform the Underutilized file systems health check on allsupported managed hosts.

85Examples for using Storage Foundation health checksExample 3 – Optimizing file system utilization on your Storage Foundation hosts

To perform the Underutilized File systems health check, you do the following:







You can specify the Storage Foundationhost whose file system utilization you wantto check..


View the number of violations that occuron the hosts that are listed in thecompleted Health Check report.

■ Interpret the Health Check report result.


86

In the Health Check report, you can viewthe health check violations that occurredon the file systems.

View the following details of the violationthat occur on the file system:

■ Name of the health check that isperformed on the managed hosts. Inthis example, the field displaysUnderutilized File systems.

■ Category to which the health checkbelongs. In this example, the fielddisplays Utilization..

■ Details of the file system on which theviolation occurred. You can click thelink in this field to view the details ofthe file system and perform therequired action to address the underutilization problem of the file system.

■ Name of the Storage Foundation hoston which you performed theUnderutilized File systems healthcheck. You can click the name of thehost to view the details of the host andperform the required action to addressthe under utilization problem of thefile system.


For more details on how to view completedHealth Check report, See “Viewingcompleted Health Check reports”on page 49.

■ Resolve the underutilization problem by shrinking the file system of the host.

In the SF Manager console, you can resize the volume that is associated with thefile system to resolve the under-utilization problem of the file system. From theDetails field or the Host field of the Health Check report, you can navigate to thefile system details view and click the Administer link. From the Name of mountpoint –Name of host view, you can navigate to the details view of the volume thatis associated with the file system to perform the Resizing volume task.


For additional information on how to viewthe overview of a file system, see StorageFoundation ManagerWebGUIHelp.

Click the link in the Details field to viewthe file system overview view.


For additional information on how to viewthe file system, see Storage FoundationManagerWebGUIHelp.

In the file system overview view, click theAdminister link.

In theName ofmount point –Name of hostview, under Details, select the name of thefile system on which the under utilizationproblem is reported. In the Device column,click the link to access the details view ofthe volume that is associated with the filesystem.

For additional information on how toresize the volume, see Storage FoundationManagerWebGUIHelp.

In the Name of volume Volume Details –Name of host view, on the left side panel,under Volume Tasks, click Resize. In theResize Volume wizard panel, enter thedetails and perform the resizing volumetask.




For additional information on how to viewthe file systems of a host, see StorageFoundation ManagerWebGUIHelp.

In the Name of host view, click FileSystems.

Select the file system on which theunder-utilization problem is reported andclick the link in the Mount Point field.

For additional information on how to viewthe overview of a file system, see StorageFoundation ManagerWebGUIHelp.

In the Name of mount point view, clickAdminister.

For additional information on how to viewthe details of the file system, see StorageFoundation ManagerWebGUIHelp.

In theName ofmount point –Name of hostview, under Details, select the name of thefile system on which the under-utilizationproblem is reported. In the Device column,click the link to access the details view ofthe volume that is associated with the filesystem.


88

For additional information on how toresize the volume, see Storage FoundationManagerWebGUIHelp.

In the Name of volume Volume Details –Name of host view, on the left side panel,under Volume Tasks, click Resize. In theResize Volume wizard panel, enter thedetails and perform the resizing volumetask.

Also, the Health Check Add-on lets you create a template that you can use togenerate the Health Check report.




For example, create a template if you want to configure the options for theUnderutilized File systems health check.

For additional information on how to createa template, See “Creating Health Checktemplates” on page 20.

Create a new Health Check template.

For additional information on how toconfigure the options for a health check, See“Configuring options for the health checksassociated with a template” on page 33.

For additional information about theUnderutilized File System (Percentage)value, See “Health checks that belong toUtilization” on page 66.

Configure options for the UnderutilizedFilesystems check .

Modify the utilization percentage that youwant to report on. By default, this fielddisplays the under utilization percentage as10%.

Alternatively, you can use the vxresize command to shrink the file system andthe associated volume to resolve the under-utilization problem of the file system.If required, you can use the fsadm command to shrink the file system and thenuse the vxassist command to resize the volume. For additional information abouthow to resize the file system, see Veritas File System Administrator's Guide.




Example 4 – Upgrading the Storage Foundation diskgroups in your datacenter to the latest version

As a storage administrator, you must ensure the availability of the latest featuresof the product when you upgrade the Storage Foundation to the latest version.Certain new features are not available if you do not upgrade the disk groups tothe latest version. For example, the Import of Cloned Disks feature offered withStorage Foundation 5.0 is not available unless the disk groups are upgraded toversion 140.

The Health Check Add-on provides you with a centralized and a systematic methodto monitor whether the disk group version in your datacenter is the latest availableone.


■ Pinpoint the disk groups that are not upgraded to the highest version.

■ Drill down to view the details of the disk groups.

■ Learn how to upgrade the disk groups to the latest version.








The following example describes how you can use the Health Check Add-on toverify whether the disk groups that are associated with a Storage Foundation hostare upgraded to the higher version. You can use the Disk Group Version healthcheck to verify whether the disk groups that are associated with a StorageFoundation host are upgraded to the higher version.

Examples for using Storage Foundation health checksExample 4 – Upgrading the Storage Foundation disk groups in your datacenter to the latest version

90

Note: You can perform the Disk Group Version health check on all supportedmanaged hosts.

To perform the Disk Group Version health check, you do the following:



For additional information on how to starta new Health Check report, see See“Starting a new Health Check report”on page 42.


For additional information on how tocreate a Health Check report, see See“Creating a new Health Check report”on page 45.


You can specify the Storage Foundationhost on which you want to perform theDisk Group Version health check.

For additional information on how to viewthe number of violations, see See “ViewingHealth Check report status” on page 47.

View the number of violations that occuron the Storage Foundation host that arelisted in the completed Health Checkreport.

■ Interpret the Health Check report results.

91Examples for using Storage Foundation health checksExample 4 – Upgrading the Storage Foundation disk groups in your datacenter to the latest version

In the Health Check report, you can viewthe health check violations that indicatesthe disk groups that are not upgraded tothe highest version.

View the following details of the violationsthat indicates the disk groups that are notupgraded to the highest version:

■ Name of the health check that isperformed on the managed host. In thisexample, the field displays DiskGroupVersion.

■ Category to which the health checkbelongs. In this example, the fielddisplays Best Practices.

■ Details of the disk group on which theviolation occurred. You can click thelink in this field to view the details ofthe disk group and perform therequired action to upgrade the diskgroup to the highest version.

■ Name of the host on which youperformed the health check. You canclick the name of the host to view thedetails of the host. From the hostdetails view, you can perform therequired action to upgrade the diskgroup to the highest version.


For additional information on how to viewcompleted Health Check report, see See“Viewing completed Health Check reports”on page 49.

■ Resolve the problem by upgrading the disk groups that are associated withthe Storage Foundation host to the latest version.

In the SF Manager console, you can upgrade the disk group to the latest version.From the Details field or the Host field of the Health Check report, you cannavigate to the disk group details view and click the Administer link to performthe Upgrading disk group task.


For additional information on how to viewthe overview of a disk group, see StorageFoundation ManagerWebGUIHelp.

Click the link in the Details field to viewthe disk group overview view.


92

For additional information on how to viewthe summary of a host, see StorageFoundation ManagerWebGUIHelp.

In the disk group overview view, click theAdminister link.

In the Summary –nameofhost view, underVolume Manager, click All Disk Groups.

For additional information on how toupgrade the disk groups, see StorageFoundation ManagerWebGUIHelp.

In the All Disk Groups –nameof host view,check the row that represents the diskgroup that you must upgrade. From theleft side panel click Upgrade.

In the Upgrade Disk Group wizard panel,click OK.




For additional information on how to viewthe disk groups of a host, see StorageFoundation ManagerWebGUIHelp.

In the Name of host view, click DiskGroups.

Under Disk Groups, check the row thatrepresents the disk group that you wantto upgrade to the highest version and clickAdminister.

For additional information on how to viewthe paths to a disk group, see StorageFoundation ManagerWebGUIHelp.

In the Summary -Nameofhost view, underVolume Manager, click All Disk Groups.

For additional information on how toupgrade the disk groups, see StorageFoundation ManagerWebGUIHelp.

In the All Disk Groups –nameof host view,check the row that represents the diskgroup that you must upgrade. From theleft side panel click Upgrade.

In the Upgrade Disk Group wizard panel,click OK.

Also, the Health Check Add-on lets you define a template that you can use togenerate the health check report.




93Examples for using Storage Foundation health checksExample 4 – Upgrading the Storage Foundation disk groups in your datacenter to the latest version

Alternatively, you can use the vxdg upgrade dgname command to upgrade diskgroups to the latest supported version of the Storage Foundation that is installedin your datacenter. For additional information on how to upgrade disk groups tothe highest version, see Veritas VolumeManager Administrator’s Guide.




94

Storage FoundationManager resources


■ Storage Foundation Manager on the Web

■ Getting help

■ Using the product documentation

Storage Foundation Manager on the WebFor comprehensive, up-to-date information about SF Manager, visit the SymantecWeb site:

www.symantec.com/sfm

Getting helpIf an issue arises while you use the products, refer to the product documentationand online help. If necessary, report it to Symantec.

For technical assistance, visit

www.symantec.com/enterprise/support/index.jsp

This site provides access to resources such as TechNotes, product alerts, softwaredownloads, hardware and software compatibility lists, and the customer emailnotification service. Use the Knowledge Base Search feature to access additionalproduct information, including current and past releases of productdocumentation.

4Chapter

http://www.symantec.com/sfm

http://www.symantec.com/enterprise/support/index.jsp

Using the product documentationThe following guides provide information about Storage Foundation Manager:

■ Veritas Storage Foundation Manager Administrator's Guide

■ Veritas Storage Foundation Manager Getting Started Guide

■ Veritas Storage Foundation Manager Installation Guide

For complete host operating system and system resource specifications, as wellas any known limitations or issues in this release, see the Veritas StorageFoundation Manager Release Notes.

Commenting on product documentationSubmit comments about the product documentation to the following email address:

[email protected]

Please include the following information with your documentation comments:

■ The title and product version of the guide you are commenting on

■ The topic (if relevant) you are commenting on

■ Your comment

■ Your name

Storage Foundation Manager resourcesUsing the product documentation

96

mailto:[email protected]

Action Agent A component, residing on the Management Server, that provides end users withthe ability to create rules triggered by alerts from the Veritas Provider AccessLayer (VxPAL). These rules, or policies, associate certain sets of conditions withstorage resources and define actions to be taken when these conditions aredetected. The Action Agent is seamlessly integrated with the SF Manager so thatusers of the Console can monitor, define, and modify policies. Also Rule Manager.

Active/active

configuration

A failover configuration where each system runs a service group. If either systemfails, the other one takes over and runs both service groups. Also symmetricconfiguration.

Active/passive

configuration

A failover configuration consisting of one service group on a primary system, andone dedicated backup system. Also asymmetric configuration.

addressable storage Configured storage that has been apportioned into addressable units (LUNs) andis ready to be allocated to hosts. This storage is typically part of RAID groups.

addressable unit Any storage resource in the network that is ready to be allocated for use by hostsand applications. Also AddrUnit or AU.

See also LUN

agent A process running on a managed host that collects status information fromnetwork resources, such as hardware and virtual storage, and relays thatinformation to the Management Server.

See also explorer

In VCS, a process that starts, stops, and monitors all configured resources of atype, and reports their status to VCS.

Agent See managed host

Alarm Service A component (Windows service/UNIX daemon), residing on the ManagementServer, that retrieves and correlates SNMP and other data and sends alerts to theAction Agent for further processing using defined policies. The Alarm Servicehas a command-line interface—vxascmd—with which you can connect to the AlarmService to obtain server and object information and perform various Alarm Servicecommands and queries.

alert One of several types of configurable notifications produced when an Action Agentalarm is triggered. An alert is dynamic, resetting itself automatically when acondition monitored by a policy returns to its specified CLEAR state.

Glossary

Alert Manager See Action Agent

allocated storage The total amount of addressable storage in LUNs that is designated for use byspecific hosts. A LUN is considered allocated when a host operating system haswritten a device handle for the LUN (in other words, claimed the LUN) or whenthe array has masked the LUN to a specific target.

Contrast with unallocated storage

annotation A user-defined tag (attribute) that can be applied to a resource or set of resources.It represents information that cannot be discovered by SF Manager. Eachannotation consists of an attribute, for example LOCATION, and can be given oneor more values, for example 2ND FLOOR. Annotations are useful for organizingresources according to their shared characteristics. They are also used forassigning storage to tiers. SF Manager supports two kinds of annotations:host-specific annotations, which are defined on a host through a standaloneproduct such as VxVM or VVR; and global annotations, which are stored only inthe SF Manager database.

application A program or group of programs designed to perform a specific task. OracleDatabase and Symantec NetBackup are examples of applications.

big-endian A technique for multibyte data storage in which the most significant value in eachsequence is stored at the lowest (that is, first) storage address.

Contrast with little-endian

bridge A device that connects and passes packets between two segments of a storagenetwork that use the same communications protocol.

See also router

capacity The amount of storage an object can allocate or use.

centralized mode The condition in which a constituent product or plug-in product [point product]is running on the Management Server, in conjunction with other constituentproducts. This is the opposite of the situation in which the product runs by itself.

claimed storage Storage for which at least one host’s operating system has created a device handle.

Contrast with unclaimed storage

cluster A set of hosts (each termed a node) that share a set of disks and are connected bya set of redundant heartbeat networks. A cluster can have from one to 32 membersystems, or nodes. Also VCS cluster.

cluster communication Communication between clusters using either of the two core communicationprotocols defined by Symantec Cluster Server: GAB and LLT. The communicationtakes place by means of heartbeat signals sent between systems or fastkernel-to-kernel broadcasts.

Cluster Server See Veritas Cluster Server (VCS)

Storage Foundation Manager Glossary98

collector A measurement representing a specific state or numerical value for objects in thestorage network. The Alarm Service uses collectors to monitor and correlate statusand performance information, using several different processes. The Alert Manageruses information gathered by collectors to trigger actions such as SMTP mail,Console alerts, commands, and logging.

CommandCentral

Storage

A product offering designed to maximize the return on an enterprise’s storagetechnology investment by providing tools with which a storage administrator canmake the storage network or SAN operate as effectively as possible.

configured storage Physical storage that has been formatted and is ready to be apportioned into RAIDgroups.

Contrast with unconfigured storage

connectivity plan A customizable report with which an operator can see the dependencies betweenthe logical storage resources provided by Veritas Volume Manager and theunderlying physical storage, and verify the connections to that storage as visiblefrom various hosts on the network.

deport To disable all local access to a VxVM-managed disk group or volume, usually inpreparation for moving it.

Contrast with import

device A collective term for disks, tapes, disk arrays, tape arrays, and any other objectsthat store data. Also storage device.

device handle The name the operating system uses to identify a storage resource (known as anaddressable unit or LUN), and the correct means (driver, system call) to access it.Also OS handle.

disaster recovery The use of a secondary location to recover applications and data after a site failure.Disaster recovery requires heartbeating and replication.

discovery The process of finding objects on the storage network and adding informationabout them to a database.

See also explorer

disk group A collection of disks that share a common configuration. A disk groupconfiguration is a set of records containing detailed information on existing VeritasVolume Manager objects (such as disk and volume attributes) and theirrelationships. Each disk group has an administrator-assigned name and aninternally defined unique ID. The root disk group (rootdg) is a special private diskgroup that always exists.

Domain Controller A server component that provides an infrastructure and communications layerfor object and cache management for many Symantec storage managementproducts. In SF Manager the Domain Controller is installed on the ManagementServer. Also vxsvc.

99Storage Foundation Manager Glossary

Contrast with Local Controller

Dynamic Multipathing

(DMP)

A feature of Veritas Volume Manager designed to provide greater reliability andperformance by using path failover and load balancing for multiported disk arraysconnected to host systems through multiple paths. DMP detects the various pathsto a disk using a mechanism that is specific to each supported array type. DMPcan also differentiate between different enclosures of a supported array type thatare connected to the same host system.

DynamicStorageTiering

(DST)

A feature with which administrators of multi-volume VxFS file systems can managethe placement of files on individual volumes in a volume set by defining placementpolicies that control both initial file location and the circumstances under whichexisting files are relocated. These placement policies cause the files to which theyapply to be created and extended on specific subsets of a file system’s volume set,known as placement classes. The files are relocated to volumes in other placementclasses when they meet specified naming, timing, access rate, and storagecapacity-related conditions.

See also Veritas File System (VxFS)

event A notification that indicates when an action, such as an alert or a change in state,has occurred for one or more objects on the storage network.

explorer A software tool that uses a unique methodology to discover information about aparticular kind of resource on the storage network. In an SF Manager configuration,explorers running on both the Management Server and the managed host locateresources and discover information about them.

See also discovery

extent A continuous space on a disk or storage volume that is occupied by or reservedfor a particular data set, data space, or file.

fabric A group of SAN objects connected by a Fibre Channel (FC) switch. A fabric containsat least one FC switch and may also contain zones.

failover A backup operation that automatically switches to a standby database, server, ornetwork if the primary system fails or is temporarily shut down for servicing.

Fibre Channel A collective name for the fibre optic technology that is commonly used to set upa storage area network (SAN) or virtual fabric (VSAN). A set of standards capableof transferring data between ports and through network devices at higher speedsand over significantly greater distances than SCSI technology, Fibre Channelsupports point-to-point, loop, and fabric topologies.

file change log (FCL) In Veritas File System, a repository to track changes made to files in a file system.It can also contain information about file accesses (such as opens, reads, andwrites) and I/O activity. FCL data is used in file placement policies to evaluate afile's activity level (access history and I/O temperature).


file system A means of organizing the addressable storage of one or more physical or virtualdisks to give users and applications a convenient way of organizing files. Filesystems appear to users and applications as directories arranged in a hierarchy.

firmware A set of software instructions set permanently in a device’s memory.

GBIC Gigabit interface converter. A widely used transceiver module for Fibre Channel.A GBIC is modular and hot-swappable and can be either copper or optical.

generic group A class or collection of switches, hosts, and storage devices. Groups are useful fora number of different purposes such as meeting certain availability and redundancyrequirements, or for administrative or tracking purposes.

See also group

Global Service Group A VCS service group that spans across two or more clusters. The ClusterListattribute for this group contains the list of clusters over which the group spans.

group A class or collection of network objects. Groups are useful for a number of differentpurposes such as meeting certain availability and redundancy requirements, orfor administrative or tracking purposes. The SF Manager supports two differenttypes of groups: custom groups (user-defined collections of objects) and applicationgroups (collections of objects determined by their common dependency on aspecific application).

GroupAtomicBroadcast

(GAB)

A communication mechanism of the VCS engine that manages cluster membership,monitors heartbeat communication, and distributes information throughout thecluster.

HBA Host bus adapter. An interface between a server or workstation bus and a FibreChannel network.

heartbeat A signal sent at regular intervals to indicate that a host and its connections areoperating normally.

High Availability (HA) The concept of configuring the SF Manager to be highly available against systemfailure on a clustered network using Symantec Cluster Server (VCS).

hub A common connection point for devices in the storage network. The hub may beunmanaged, IP-managed, or FC-managed. An unmanaged hub is passive in thesense that it serves simply as a conduit for data, moving the data from one storageresource to another. IP-managed and FC-managed hubs are intelligent, containingfeatures an administrator can use to monitor the traffic passing through the huband configure each port in the hub.

import To re-enable local access to a VxVM-managed disk group or volume, usually afterit has been moved.

Contrast with deport


in-band A type of Fibre Channel management protocol. The most prevalent in-bandprotocol over Fibre Channel is SCSI Enclosure Services (SES).

Contrast with out-of-band

intent A conceptualization of the purpose of a disk or a volume. Connectivity reports inthe SF Manager Console display data on intent satisfaction: a measure of howclosely the storage device’s actual usage aligns with its intended purpose.

IP address An identifier for a computer or other device on a TCP/IP network, written as foureight-bit numbers separated by periods. Messages and other data are routed onthe network according to their destination IP addresses.

See also virtual IP address

jeopardy The state in which a node is missing one of the two required heartbeat connections.When a node is running with one heartbeat only (in jeopardy), VCS does not restartthe applications on a new node. This action of disabling failover is a safetymechanism that prevents data corruption.

legacy managed host A Storage Foundation version 4.x host that contains a Veritas Provider AccessLayer (VxPAL) agent enabling it to be centrally managed by Storage FoundationManager.

little-endian A technique for multibyte data storage in which the most significant value in eachsequence is stored at the highest (that is, last) storage address. Contrast withbig-endian

Local Controller A server component that provides object and cache management for manySymantec storage management products. In SF Manager the Local Controller canbe installed on a Management Server or on a standalone host, where it alsofunctions as a daemon for the Veritas Enterprise Administrator(EnterpriseAdministrator) Java console to connect to and manage the host. Alsovxsvc.

Contrast with Domain Controller

logical volume A simple volume that resides on an extended partition on a basic disk and is limitedto the space within the extended partitions. A logical volume can be formattedand assigned a drive letter, and it can be subdivided into logical drives.

See also LUN

LUN Acronym for "logical unit number." A unique and discrete addressable unit orlogical volume that may reside inside one or more simple or array storage devices.LUNs are exposed to the outside world through an addressing scheme presentedto the host as SCSI LUN numbers. Each LUN has a unique device handle andrepresents a logical volume.

LUN binding The creation of access paths between an addressable unit (AddrUnit) within a diskarray and a port on the array. AddrUnits are storage volumes built out of the


physical disks within the array. Array ports are connected to the SAN fabric andfunction as SCSI targets behind which the AddrUnits bound to those ports arevisible.

LUN masking The practice of enabling access to a particular addressable unit (AddrUnit) for ahost on the storage network. This is done by creating an access control listassociated with the LUN (the access path) between that AddrUnit and an arrayport to which it is bound. The access control list for a LUN contains the WorldWide Name of each HBA port that is allowed to access that LUN within the array.

managed host A component that assists the Management Server in discovering all of theresources in the storage network. The managed host is connected to theManagement Server and consists of several agents that are also used by theManagement Server.

See also agent

management explorer

(MGEX)

An explorer that uses the Fibre Channel Common Transport (CT) protocol todiscover switches in-band over Fibre Channel, obtain switch characteristics, andexplore port connectivity.

Management Server The central component in a Storage Foundation Manager installation. It receivesnetwork data from one or more managed hosts and serves as a focal point forvarious network management operations.

mirroring A form of storage redundancy in which two or more identical copies of data aremaintained on separate volumes. (Each duplicate copy is known as a mirror.) AlsoRAID Level 1.

multipathing Multiple physical access paths to a disk connected to a host system. Any softwareresiding on the host (for example, the DMP driver) that hides multiple physicalaccess paths from the user is said to provide multipathing functionality.

See also Dynamic Multipathing (DMP)

network partition The condition that exists after all network connections between any two groupsof systems fail simultaneously. When this happens, systems on both sides of thepartition can restart applications from the other side resulting in duplicateservices, or split-brain. A split brain occurs when two independent systemsconfigured in a cluster assume they have exclusive access to a given resource(usually a file system or volume). The most serious problem caused by a networkpartition is that it affects the data on shared disks.

See jeopardy

See seeding

node An object in a network. In Symantec Cluster Server, node refers specifically toone of any number of hosts in a cluster.

See also object


object A single, unique addressable entity on a storage network. It is possible for objectsto be present within objects. For example, while a tape array is an object, eachindividual tape drive within the array is also an object. A host is an object, andthe HBA inside the host is also an object. Each object has one or more attributesand can be a member of one or more zones.

object dependency

group

A class or collection of storage objects associated with applications, such asvolumes and file systems. Groups are useful for a number of different purposessuch as meeting certain availability and redundancy requirements, or foradministrative or tracking purposes.

See also group

Object Reference orOID

(Object ID)

A key which uniquely identifies an object in the discovery data store. OIDs arerepresented in XML files as hexadecimal strings with a maximum length of 128characters.

out-of-band A type of communication protocol other than the Fibre Channel managementprotocol, such as SNMP or a vendor-specific proprietary protocol.

Contrast with in-band

path The route through which a host accesses data on a storage medium such as a diskin an array. The path consists of an HBA (host bus adapter) on the host, a SCSI orFibre Channel connector, and a controller on the disk or disk array.

physical fabric The physical components of a fabric, including all switches and all other SANobjects. You can configure one or more virtual fabrics—each one isolated fromthe others—based on the hardware components in the physical fabric.

plex In storage media managed by Veritas Volume Manager (VxVM), a collection ofone or more subdisks located on one or more physical disks.

See also subdisk volume

policy A set of rules, or configuration settings, that are applied across a number of objectsin the storage network. You establish policies to help you monitor and managethe network. Each policy associates certain sets of conditions with storageresources and defines actions to be taken when these conditions are detected.

port A connection through which a device is attached to an I/O bus or to the storagenetwork, or the representation of this physical connection to the link hardware.

provisioning The set of activities by which a user allocates storage to hosts and applications,for example creating LUNs in an array, setting up zoning between a host and anarray, and giving the server access to the storage.

RAID Redundant Array of Independent Disks. A set of techniques for managing multipledisks for cost, data availability, and performance.

See also mirroringstriping


replication The synchronization of data between systems where shared storage is not feasible.The systems that are copied may be in local backup clusters or remote failoversites. The major advantage of replication, when compared to traditional backupmethods, is that current data is continuously available.

resource Any of the individual components that work together to provide services on anetwork. A resource may be a physical component such as a storage array or aswitch, a software component such as Oracle8i or a Web server, or a configurationcomponent such as an IP address or mounted file system.

resource type A way of classifying resources in a cluster. Each resource is identified by its nameand its resource type. Symantec Cluster Server includes a set of predefined resourcetypes for storage, networking, and application services.

router A device that connects two segments of a storage network and determines theoptimal path along which traffic should be forwarded. Also gateway.

See also bridge

Rule Manager See Action Agent

SAN Acronym for "storage area network." A network linking servers or workstationsto devices, typically over Fibre Channel, a versatile, high-speed transport. Thestorage area network (SAN) model places storage on its own dedicated network,removing data storage from both the server-to-disk SCSI bus and the main usernetwork. The SAN includes one or more hosts that provide a point of interfacewith LAN users, as well as (in the case of large SANs) one or more fabric switchesand SAN hubs to accommodate a large number of storage devices.

SCSI Small Computer Systems Interface. A hardware interface that allows for theconnection of multiple peripheral devices to a single expansion board that plugsinto the computer. The interface is widely used to connect personal computersto peripheral devices such as disk and media drives.

seeding A technique used to protect a cluster from a preexisting network partition. Bydefault, when a system comes up, it is not seeded. Systems can be seededautomatically or manually. Only systems that have been seeded can run VCS.Systems are seeded automatically only when an unseeded system communicateswith a seeded system or when all systems in the cluster are unseeded and able tocommunicate with each other.

See network partition

service group A collection of resources working together to provide application services toclients. It typically includes multiple resources, hardware- and software-based,working together to provide a single service.

service group

dependency

A mechanism by which two service groups can be linked by a dependency rule,similar to the way resources are linked.


SF Manager Console See Storage Foundation Management Console

shared storage Storage devices that are connected to and used by two or more systems.

slot An opening in a computer or other network device into which a printed circuitboard can be inserted, adding capability to the device. Also expansion slot.

SMTP Simple Mail Transfer Protocol, a commonly used protocol for sending emailmessages between servers.

SnapMirror A method of mirroring volumes and qtrees on NetApp unified storage devices.With SnapMirror, a user can schedule or initiate data transfers, requestinformation about transfers, update a mirror, and manage mirrors.

See mirroring

snapshot A point-in-time image of a volume or file system that can be used as a backup.

SNMP The Simple Network Management Protocol for Internet network managementand communications used to promote interoperability. SNMP depends oncooperating systems that must adhere to a common framework and a commonlanguage or protocol.

Storage Foundation

Manager Console

A graphical user interface that displays reports and other information for usersof the SF Manager and other Storage Foundation products through a standardWeb browser. For users of the SF Manager, the Console provides a central pointto display and manage storage resources, create and modify policies, provisionstorage, administer access control, and view reports.

striping A layout technique that spreads data across several physical disks by mappingthe data to successive media, known as stripes, in a cyclic pattern. Also RAID Level0.

subdisk In storage media managed by Veritas Volume Manager (VxVM), a set of contiguousdisk blocks used for allocating disk space. A VxVM disk can be divided into oneor more subdisks, each one representing a specific portion of the disk. Each portionis mapped to a specific region of a physical disk.

See also plex volume

switch A network device to which nodes attach and which provides high-speed switchingof node connections via link-level addressing.

system The physical hardware on which data and applications reside, and the connectionsbetween them.

tool A prepackaged workflow shipped with Storage Foundation Manager for performingtasks that otherwise would require multiple operations in multiple locations. Twoexamples of solutions are migrating disk groups from one host to another andstoring, maintaining, and implementing storage tiers by creating and executingfile placement policies.


topology The physical or logical arrangement of resources on the storage network and theconnections between them.

UDID An alternative disk identifier used internally by some components in the StorageFoundation products, for example, Veritas Volume Manager (VxVM) command-lineinterfaces.

See also VDID

unallocated storage LUNs that have not yet been allocated. A LUN is considered allocated when a hostoperating system has written a device handle for the LUN (in other words, claimedthe LUN) or when the array has masked the LUN to a specific target.

Contrast with allocated storage

unclaimed storage Storage that has been allocated to hosts whose operating systems have not yetwritten device handles. This is usually wasted storage.

Contrast with claimed storage

unconfigured storage Physical storage that has yet to be formatted.

Contrast with configured storage

unused storage Storage to which data has not been written.

Contrast with used storage

used storage The portion of storage allocated to a file system or database to which data hasbeen written, expressed as a quantity (such as 10 GB).

Contrast with unused storage

VCS See Veritas Cluster Server (VCS)

VDID A unique disk identifier. See also UDID

VEA See Veritas Enterprise Administrator (VEA)

Veritas Authentication

Service (VAS)

A component of the Veritas Security Services (VxSS) that is used by the StorageFoundation offerings to provide user authentication. VAS is a set of processesand runtime libraries that enables users to log on to multiple Symantec productswith one logon.

Veritas Cluster Server

(VCS)

An open systems clustering solution designed to eliminate planned and unplanneddowntime, simplify server consolidation, and allow the effective management ofa wide range of applications in multiplatform environments.


cluster

A cluster consisting of multiple systems connected in various combinations toshared storage devices. Veritas Cluster Server monitors and controls applicationsrunning in the cluster and can restart applications in response to a variety ofhardware or software faults. A cluster is defined as all systems with the same


cluster identification and connected via a set of redundant heartbeat networks.Clusters can have from one to 32 member systems, or nodes.


service group

A set of resources working together to provide application services to clients. Forexample, a Web application service group might consist of: disk groups on whichthe Web pages to be served are stored; a volume built in the disk group; a filesystem using the volume; a database whose table spaces are files and whose rowscontain page pointers; the network interface card or cards used to export the Webservice; one or more IP addresses associated with the network card(s); theapplication program and associated code libraries. Veritas Cluster Server performsadministrative operations on resources, including starting, stopping, restartingand monitoring at the service group level.

Veritas Enterprise

Administrator (VEA)

A Java-based graphical user interface monitoring and managing legacy (StorageFoundation 4.x) hosts in a single-host (standalone) management environment.The EnterpriseAdministrator interface provides an alternative to thebrowser-based SF Manager Console.

Veritas File System

(VxFS)

A component of the Veritas Storage Foundation product suite that provides highperformance and online management capabilities to facilitate the creation andmaintenance of file systems. A file system is a collection of directories organizedinto a structure that enables you to locate and store files.

Veritas Storage

Foundation Manager

A single, centralized management application with which administrators andoperators can monitor, visualize, and manage their Storage Foundation productsand generate reports about storage resources.

VeritasVolumeManager

(VxVM)

A Symantec product installed on storage clients that enables management ofphysical disks as logical devices. VxVM enhances data storage management bycontrolling space allocation, performance, data availability, device installation,and system monitoring of private and shared systems.

Veritas Volume

Replicator (VVR)

A data replication tool designed to contribute to an effective disaster recoveryplan. VVR is a feature of Veritas Volume Manager (VxVM).

virtual IP address A unique IP address associated with a VCS cluster. This address can be used onany system in the cluster, along with other resources in the VCS cluster servicegroup. A virtual IP address is different from a system’s base IP address, whichcorresponds to the system’s host name.

See also IP address

virtualization Representing one or more objects, services, or functions as a single abstract entityso that they can be managed or acted on collectively. An example of virtualizationis the creation of a virtual fabric from a switch and associated storage resourcesas a means of controlling access and increasing scalability in the storage network.


volume In storage media managed by Veritas Volume Manager, a virtual disk made up ofa portion or portions of one or more physical disks and representing an addressablerange of disk blocks. A volume appears to applications, databases, and file systemslike a physical disk device, but it does not have the physical limitations of a physicaldisk device. A volume consists of one or more plexes, each holding a copy of theselected data in the volume. Due to its virtual nature, a volume is not restrictedto a particular disk or a specific area of a disk.

See also plex subdisk

VVR See Veritas Volume Replicator (VVR)

VxVM See Veritas Volume Manager (VxVM)

World Wide Name

(WWN)

A registered, 64-bit, unique identifier that is assigned to nodes and ports.


AAcceptable List

removing items 36Availability 17, 61

example 75

BBest Practices 17, 68

example 90

Cchecks 11

configure 11disable 34enable 35turn off 34turn on 35

Ddisable hosts 16discovery module 13

Eenable hosts 16Exclude List 28

adding hosts 28removing hosts 30

HHealth Check

template 16health check

category 17details of violations 57discovery module 13violations 41

Health Check Add-onabout 11how it works 13

health check category 17Availability 17, 61Best Practices 17, 68Performance 17, 65Utilization 17, 66

health check optionsconfigure 33

Health Check report 11, 39canceling 48compare 11, 39

difference 52similarities 53

creating 45deleting 54deleting completed reports 54making public 39, 42report in progress

canceling 48specifying managed hosts 45starting 42status 11, 39template 11, 39viewing 39viewing completed reports 47, 49viewing difference

new violations 52viewing differences 52viewing report in progress 47viewing reports based on categories 49viewing similarities 53

unresolved violations 53viewing status 47

health check violationaddressing violations 41marking violations as acceptable 41removing objects

Acceptable List 36resolving 41set as acceptable 41

Exclude List 41, 58health check violations 41

marking violations as accepatable 58

Index

health check violations (continued)removing items

Acceptable List 36set as accepatable 58

health checks 11configuring options 33disable 34enable 35turn off 34turn on 35violation 36

IInclude List 24

adding hosts 24removing hosts 26

Mmanaged host

health check violations 55managed hosts

configuration status 11, 39disable 16enable 16

PPerformance 17, 65

example 80

Ssupport

commenting on documentation 96

Ttemplate 16

adding hosts to Exclude List 28adding hosts to include list 24associating managed hosts 24configuring options for health checks 33creating 20deleting 23disable health checks 34disable hosts 16editing 22enable health checks 35enable hosts 16exclude hosts 16

template (continued)exclude managed hosts 11include hosts 16, 24include managed hosts 11modifying 22removing associated hosts 26removing hosts from Exclude List 30reviewing checks 32setting options 16User Default 20

templatesviewing list of templates 19

UUtilization 17, 66

example 84

Index112

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