AppendixB(ibm tivoli docs)

8/14/2019 AppendixB(ibm tivoli docs)

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Appendix B: Problem Determination


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TSM Features Address Problems

Sometimes a problem can be resolved by evoking features

of IBM Tivoli Storage Manager.

The TSM Development teams have addressed what were once

common problems for storage administrators and created featuresand options to make it easier to protect your data.

TSMfeatures


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Mapping TSM Solutions to Common Problems

system command line, type DSM to start the GUI.

Feature Description Solution Provided

AdministratorCenter Task-orientated interface to manage one ormore Tivoli Storage Manager servers. Centralized management ofenterprise systems.

Backup Sets Collection of backed up files, stored as a singleobject on specific media.

Can be used for client restorewithout network or server.

EnhancedScheduling

Client and Administrative schedules can utilizeflexible groupings and dates.

Easier scheduling set up.

Client Option Sets A collection of client options that can be appliedto multiple clients.

Sets options for groups ofclients.

Collocation Enables the server to keep all files belonging toa client node or a client file space on a minimalnumber of sequential access storage volumes.

Reduces restore times.

Collocation Groups Allows creation of a group of nodes for

collocation.

Does not require a tape for

every node. Faster restoretime.

Disk-to-DiskBackup

Tapeless backups use disks as storage media. Minimized fragmentation,utilizes inexpensive disks.

Health Monitor Part of the Administration Center, which is usedto monitor system status.

Centralized monitoring ofstorage tasks.


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Mapping TSM Solutions to Common Problems

system command line, type DSM to start the GUI.

Feature Description Solution Provided

Include-Exclude Lists that customize which files are considered

for backup or archive.

Does not use space or time on

files which do not requireprotection.

Migration of Files ina Storage PoolHierarchy

Automatic migration to the next storage pool inthe hierarchy maintains free space in theprimary storage pool.

Ensures sufficient space in thefaster storage pools at the topof the storage pool hierarchy.

Online Image

Backup

Creates a point-in-time image backup, or

snapshot, at the volume level, in which thevolume remains in an available state during thebackup. The backup-archive client delays thestart of the volume snapshot until volumeactivity is idle for a specified amount of time,thus allowing for a more stable snapshot.

Allows other applications to

continue accessing andchanging the contents of thevolume during backup.

Progressive

BackupMethodology

Only files that have changed are candidates to

be backed up (incremental backups).

Reduces network traffic and

improves processor utilizationby minimizing data transfertime. More efficient use ofstorage space.

Reclamation As data expires and leaves unused space onthe tape, the remaining data can be moved,allowing the empty space to be reused.

Efficient tape utilization andreduced restore times (fewertapes).


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Problem Determination Objectives

To be successful, you should:

Learn the steps for problem determination when the TSM

server has experienced a failure.

Understand how the suggestions made for volume

placement, mirroring, and backup of TSM provide for TSM

recovery.Learn how to manually recover the TSM server in the event

of a catastrophic failure. Disaster Recovery Manager can

automate this process; an instructor-led class is available.

Understand how to recover in the event of database failure,

data corruption on a volume, or volume destruction.


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Steps for Problem Determination

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Consider these questions while diagnosing a problem:

What is the problem?

Where did it occur?

When did it begin?

What action was being performed?

Were any messages issued?

How frequently does the error occur?

Follow these steps:

Verify that devices are still accessible to the system and to TSM.

Search the online Knowledge Base at IBM.com to match error

messages or problem descriptions.

Test other operations to better determine the scope and impact of the

problem. Testing may also help determine if a specific sequence of

events causes the problem.


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Considerations when Diagnosing the

Problem

There are many areas to look at when a problem occurs. Movement of data starts at the disk on the client and moves to

either a disk or tape media on the server.

Data moves through many components (clients, networks, servers,

and storage devices).

Bottlenecks can occur in any of these components. Points of consideration:

Drivers

Adapters

Network issues

Memory

Routers

Other applications


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Diagnosing a Client Problem

Examine any error messages that were issued.Examine the server activity log messages for this session.

Is this an error in communicating with the server?

Were client options changed?

Were policy settings changed on the server?

Is the client being run with the QUIET option?

Verify INCLUDE-EXCLUDE syntax and ordering.

Was this the correct TSM server?

Identify when and where the problem occurs.

If the problem can be duplicated, try to minimize thecircumstances under which it can occur.

Collect documentation.


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Diagnosing a Server Problem

Check the server activity log.

Check HELP for TSM messages issued for the

problem.

Can the problem be duplicated?

Is the problem an error in reading or writing to a

device?Have any server options or settings been changed?

Did a scheduled client operation fail?

Did the server run out of space?

Are connections by clients or administrators failing?

Collect documentation.


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Problem Determination Guide


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Diagnosing a Problem Sample Page


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What to Do before Calling Support

Review logs:

ACTLOG

EVENTLOG

DSMERROR.LOG

DSMSCHED.LOG

Review the documentation for your operating system.

Review the Problem Determination Guide. Check the IBM Tivoli Storage Manager Knowledge Base on the Web:

www-3.ibm.com/software/sysmgmt/products/support Issue the query systeminfo command, when instructed by TSM Support,

and review the output file.

If you still need to call support, they will direct you in what information needsto be gathered. Use caution when issuing traces. Trace functions can

require a lot of time and system resources.

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Information to Gather for Support

Have the following information ready when you report a problem:

The Tivoli Storage Manager server version, release, modification, and

service level number. You can get this information by entering the querystatus command at the Tivoli Storage Manager command line.

The Tivoli Storage Manager client version, release, modification, andservice level number. You can get this information by entering dsmc at thecommand line.

The communication protocol (for example, TCP/IP), version, and release

number that you are using. The activity that you were doing when the problem occurred, listing the

steps that you followed before the problem occurred.

A description of the symptom or error encountered.

The exact text of any error messages relating to the symptom or errorencountered.

Error logs or other related documentation for the problem.

Use the query actlog server command and collect the

server activity log messages starting 30 minutes prior to

the problem until 30 minutes after the problem.

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Reporting a ProblemYou can contact IBM Customer Support in one of the followingways:

Visit the Tivoli Storage Manager technical support Web site. Submit a problem management record (PMR) electronically atIBMLink.

Submit a problem management record (PMR) electronically atIBM Software Support.

Customers in the United States can call 1-800-IBM-SERV (1-800-426-7378).

International customers should consult the Web site forcustomer support telephone numbers.

Hearing-impaired customers should visit the TDD/TTY VoiceRelay Services and Accessibility Center Web site.

You can also review the IBM Software Support Guide.

When you contact IBM Software Support, be prepared to provide

identification information for your company so that supportpersonnel can readily assist you. Company identificationinformation is needed to register for online support available onthe Web site.

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Additional Resources for TSM

Education

Documentation shipped with Tivoli Storage Manager

Other Publications

IBM Web sites

User Groups

Welcometo TSM

Training.

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Education

The following slides show the IBM Tivoli Storage

Manager 5.4 Curriculum Roadmap, which showsthe courses in the order they should be taken.

Check the IBM Web site for the availability of the

courses.

Welcome

to TSM

Training.

From the IBM home page, select:TrainingTivoli

Storage and Optimization


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IBM Tivoli Storage Manager TrainingRoadmaps

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Documentation Included with IBM Tivoli

Storage Manager 5.4

The publications shipped with IBM Tivoli Storage Manager 5.4 arealso available on the IBM Web site. For your convenience, the

publications for AIX and Windows have been included on your

Student Resources CD, as well.

Also included on your Student Resources CD:

Windows and AIX User Guides RedBooks and RedPapers Problem Determination Guide Performance and Tuning Guide Operational Reporting presentation Database, policy and storage pool planning forms

Technical Field Guides

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Product Manuals on the Webhttp://publib.boulder.ibm.com/infocenter/tivihelp/index.jsp

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Other Publications

RedBooks:http://www.redbooks.ibm.com/ Search forTivoliStorage

Start with this RedBook:IBM Tivoli Storage Management Concepts

Tivoli Field Guides:http://www-306.ibm.com/software/sysmgmt/products/support/Field_Guides.html

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TSM Information on the Web

The product Web site:www.ibm.com/software/tivoli/products/storage-mgr/

IBM Tivoli Storage Manager Knowledge Base Web site:

www-3.ibm.com/software/sysmgmt/products/support

Other useful Web sites (these forums are not maintained byIBM):

www.adsm.org and http://search.adsm.org

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http://www.ibm.com/software/tivoli/products/storage-mgr/http://www.ibm.com/software/tivoli/products/storage-mgr/


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Tivoli Support Web Page

IBM Tivoli Storage Manager Version Release Information:http://www.ibm.com/software/sysmgmt/products/support/IBMTivoliStorageManagerExtendedEdition.html


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TSM Basic Concepts Poster

Free IBM Tivoli Storage ManagerConcepts Poster Version 5.3.2

(SC32-9464-00)

Orderable from the IBM Web site.Go to:

Software > Tivoli > Solutions >

Storage and Optimization.

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User Groups

www.tivoli-ug.org

AppendixB(ibm tivoli docs)

Documents