Installation and User's Guide

If the differential snapshot is not created by Tivoli Storage Manager, the latestsnapshot found on the volume is used as the differential snapshot and as thesource for the backup operation.The default value is to create the differential snapshot. This option is ignored thefirst time the snapdiff option is used. The first time the snapdiff option is used ona volume, a snapshot must be created and used as the source for a full incrementalbackup. Snapshots that are created by Tivoli Storage Manager are deleted by TivoliStorage Manager after the next snapshot difference incremental backup iscomplete.Snapshots can be created with the Network Appliance FilerView tool. Use thelatest parameter if you want Tivoli Storage Manager to use the most recentsnapshot that was created. Whatever method is used to create named snapshots,snapshot names differing only by case will not work properly with the snapdiffoption. Snapshots that are created by Tivoli Storage Manager will not have thecasing problem. Snapshots created by methods outside of Tivoli Storage Managerare never deleted by Tivoli Storage Manager.Supported ClientsThis option is valid for the following clients:v All Windows clients except IA 64 bitSyntax►►DIFFSNAPSHOTcreatelatest►◄ParameterscreateSpecifies that you want to create a new, persistent, snapshot to use as thesource snapshot. This is the default.latestSpecifies that you want to use the latest snapshot that is found on the fileserver as the source snapshot.ExamplesCommand line:Perform a snapdiff incremental backup from a snapshot that was taken ofa network share //homestore.example.com/vol/vol1 mounted on drive H:,where homestore.example.com is a file server.incremental -snapdiff H:Perform a snapdiff incremental backup from a snapshot that was taken ofan network share //homestore.example.com/vol/vol1 mounted on driveH:, where homestore.example.com is a file server. The -diffsnapshot optionvalue of LATEST means the operation uses the latest snapshot (the activesnapshot) for volume H:.incremental -snapdiffH: -diffsnapshot=latestRelated informationChapter 12. Processing options 341