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Basics of IBM Tivoli Storage Manager
 

Basics of IBM Tivoli Storage Manager

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Basics of IBM Tivoli Storage manager.

Basics of IBM Tivoli Storage manager.
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    Basics of IBM Tivoli Storage Manager Basics of IBM Tivoli Storage Manager Presentation Transcript

    • Aniruddha Thombre
    • Introduction
      • IBM Tivoli Storage Manager was earlier called as ADSM (Adstar Distributed Storage Manager), till IBM took it over.
      • IBM Tivoli Storage Manager is a client/server program that provides centralized, automated data protection and storage management solutions to customers in a multivendor computer environment. IBM Tivoli Storage Manager provides a policy-managed backup, archive, and space-management facility for file servers, workstations, applications, and application servers.
      • Versions in Production: 5.4 / 5.5, 6.1
      • Major Difference in 5.x & 6.x , metadata limit raised from 530 GB to unlimited
    • Audience
      • System Admins / Backup Admins
      • Those who are new to IBM TSM
        • This presentation may serve as notes to recall / refresh your concepts
        • It should give you basic understanding
    • Basic Concepts
      • Backup
        • To guard against the loss of information, the backup-archive client can copy files, subdirectories, and directories to media controlled by the server. Backups can be controlled by administrator-defined policies and schedules, or users can request backups of their own data.
      • Restore
        • When a user restores a backup version of a file, the server sends a copy of the file to the client node. The backup version remains in server storage. Restoring a logical volume backup works the same way.
      • Archive & Retrieve
        • To preserve files for later use or for records retention, a user with a backup-archive client can archive files, subdirectories, and directories on media controlled by the server. When users archive files, they can choose to have the backup-archive client erase the original files from their workstation after the client archives the files.
        • When a user retrieves a file, the server sends a copy of the file to the client node. The archived file remains in server storage.
      • Versioning
        • Versions are nothing but multiple copies of same file in chronology.
    • Basic Concepts…
      • Retention Policy
        • How many days you want to keep copies OR How many copies you want to retain.
        • The final retention depends upon whichever condition of the above is satisfied.
        • Default is 30 days for backup, 1 year for archive, default no. of versions is 4
      • Expiration
        • Versions keep changing states: Active => Inactive => Obsolete
        • You need to start a process to remove pointers of Obsolete files in Meta Data DB
        • That process is called as expiration
      • Reclamation
        • Once you have expired files from your sequential devices, the space has invalid data.
        • In order to use the space, you have to move data from one / more sequential devices to other devices (This is very similar to defragmentation, but as defragmentation does not work on sequential devices; you have to Move the data)
    • Basic Concepts…
      • Collocation
        • In order to reduce no. of sequential devices required we may need to collocate the data.
        • Collocation need may also arise if we want to avoid reclamation situations.
        • Collocation types: By node , By Group, By application
      • Data Migration Hierarchy
        • Random Storage devices
        • Random Storage devices / SAN / NAS etc
        • Sequential Storage Devices
      • Data Migration
        • Data can be migrated from random to random or random to sequential devices. But not from sequential to random devices.
        • Data Migration can be triggered and stopped using these two values:
          • High Threshold Value (Default is 90%)
          • Low Threshold Value (Default is 70%)
    • Components of Policy
      • Versioning Details
      • Retention Details
      • Schedules details
      • Storage pool detailss not work on sequential devices; you have to Move the data)
      • Backup and archive details
    • Complete Install Requires following:
      • Backup / Archive Clients
      • Tivoli Server Manager (Storage Server)
      • Integrated Solutions Console
      • Administration Center
    • Components of TSM
      • Storage Pools
      • Meta Data DB
      • Recovery Logs
      • Configured Settings
    • Metadata DB includes information such as:
      • Object ID, index
      • Version
      • Status of backup
      • Time stamp
      • User / Group
      • Filespace_name, Filespace_id
      • HL_name, LL_name
      • Etc.
    • TSM Server Important Files:
      • DSMServ.exe
      • DSMServ.dsk
        • Includes FQN, logv, dbv info
      • InitServ.log
        • Server Installation Logs
      • Devcnfg.out
        • Device class info, server name, instance name etc.
      • Vollist.out
        • Volume library info, info of db backups, export info.
      • DSMServ.out
        • Parameters / Settings for the instance / server.
    • BA Client Important Files:
      • Dsm.opt
        • Node name
        • Server address
        • Server tcp port
        • And other configurable parameters.
      • Dsm.exe
        • BA Client GUI
      • Dsmc.exe
        • BA Client CLI
      • Dsmadmc.exe
        • Administrative utility
    • Summary
      • Introduction to IBM Tivoli Storage Manager
      • Basic Concepts of Storage
      • Metadata info
      • Components of policy, TSM, TSM Server, BA client
      • Please, note this presentation should be used as a note to recall. It may not help you to understand technologies.
      • A lot of trademarked words are used, they belong to respective orgs.
      • This doc may not contain correct information, so I disclaim any responsibilities.
    • Resources
      • IBM Redbooks
      • Adsm.org
      • Publib.boulder.ibm.com
      • Lascon.co.uk
    • Aniruddha Thombre www.aniruddhas.com