Policy Management

Policy Management

Centrally Managed by Business PolicyBranch Office BackupsTSM ServerPolicy Domain 1Backup PolicyArchive PolicySpace PolicyPolicy Domain 2Backup PolicyArchive PolicySpace Policy Centrally defined policies manage data. Allow different types of data to be treated differently.DBWAN

How Tivoli Storage Manager Stores Client DataTSMDB123

How Policy-driven Backup Works1234TSM DatabasePolicy DomainPolicy SetManagement ClassBackup GroupBackup or ArchiveArchive GroupSpace Policycopy groupcopy group

Policy Management OverviewGrace backup retentionGrace archive retentionInclude c:\taxes\* 7YEARSDSMC Archive -ARCHMc=MC

ClientServer

Policy DomainWindows NTWindows 2000 ServerSUNNovellDOMAIN 1Node namesWin2Kname1NovellAIXname1Policy set MC MC MC Grace period backupGrace period archiveDOMAIN 2Node namesDOMAIN nNode namesWindows 2000 ServerHPSUNAIXNovellDOMAIN 1Node namesWin2Kname1NovellAIXname1Policy set MC MC MC MC Grace period backupGrace period archiveDOMAIN 2Node namesDOMAIN nNode names

Policy Set OverviewCollection of management classesOnly one active policy set per policy domainAny number of inactive policy setsContains one default management classStored in Server DatabasePolicy set names may be 1 to 30 charactersPolicy domainPolicy set OLDPolicy set NEWPolicy set ACTIVE

Management ClassRepresents a service level agreement.Associated with:backup copy grouparchive copy groupDefault management class does not require a backup copy or an archive copy group.Clients may explicitly select a management class.Store in Server Database.Management class names may contain 1 to 30 characters.

Copy GroupParameters that control the generation and expiration of backup and archive data.

Two types of copy groups: Backup and Archive.MGMTCLASS can have 0, 1, 2 copy groups.All copy groups are named STANDARD.

Copy Group ParametersSet of backup parametersfrequencymode (modified/absolute)destinationcopy serialization# versions# versions when file deletedretention days for all but last versionretention days for last version when file deleted Set of archive parametersfrequency (always Cmd)mode (always ABSolute)destinationcopy serializationretention days for archive copies

Default Server PoliciesPolicy DomainSTANDARDPolicy setSTANDARDBackup Copy GroupSTANDARDArchive Copy GroupSTANDARDBACKRETention=30ARCHRETention=365Default domain onREGister Node

Default PolicyType= BackupDESTination= BackuppoolFREQuency = 0VERExists= 2VERDeleted = 1RETExtra= 30RETOnly= 60MODE= MODifiedSERialization= SHRSTaticType= ArchiveDESTination= ArchivepoolFREQuency = Cmd

RETvr= 365MODE= ABSoluteSERialization= SHRSTatic

Related Server Option EXPINterval hours

Storage Manager File Backup Process21345213452134213211CCCCCResume.docC= changedDayBackup Versions

Storage Manager File Backup Process (cont.)21345....?2134213211CCCCResume.docDayBackup VersionsAAIAIIAIIGone?234AII234AIIA=activeI=inactive

Storage Manager File Backup Process (cont.)21345?213213213213211CCCERASE Resume.docDayBackup VersionsAIIAIAA=activeI=inactive

Storage Manager Archive File ManagementMYFILE.CHT(Retain Archive Copy = n days)DeletedNo Versioning

Deriving the MCUSE:

MC specified on INCLUDE

otherwise

Default MC in policy domain

USE:

MC specified on DSMC Archive -ARCHMc=GUI panel

otherwise

MC specified on INCLUDE

otherwise

Default MC in policy domain

Incremental/Selective BackupArchive

Binding and Rebinding the MCIncremental/Selective BackupNEW_MC /OLD_MCInactive versionsActive versionNEW_MC ArchiveMC bound to file during backup.All backup versions of a file are bound to the same MC.Backup versions of a file can be rebound to a different MC.MC bound to file during archive.Archive files are never rebound to a different MC.Different archives of the same file may have a different MC.

Rebinding MGMTCLASS to Backup Versions

1

Client changes MGMTCLASS on include

MGMTCLASS on include

2

Node assigned to new domain and MGMTCLASS does not exists

Default MGMTCLASS

3

MGMTCLASS deleted by administrator

Default MGMTCLASSRebinding Instance:MGMTCLASS used:Rebinding occurs:Client runs next backup (incremental/selective)All backup versions rebound to new MGMTCLASS

4

Node assigned to the new domain that exists

That MGMTCLASS

Policy Domain Grace Retention PeriodsSpecified on DEFine DOmain commandBackup retention grace period (BACKRETention=30).Archive retention grace period (ARCHRETention=365).Used when defaults MGMTCLASS has no copygroup for backup/archive AND...MGMTCLASS for backup no longer contains backup copy group.MGMTCLASS for an archive no longer contains archive copy group.MGMTCLASS no longer exists.