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Installation and User's Guide

Installation and User's Guide

Installation and User's Guide

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vWhat happens to backup data versions when the file is deleted on the clientsystemEach copy of the file stored on the server is considered to be a separate <strong>and</strong> uniqueversion of the file.Archive is a powerful <strong>and</strong> extremely flexible mechanism for storing long termdata. Archive data is kept for a specified number of days. Archive has no conceptor support for versions. The user or Tivoli Storage Manager administrator isresponsible for determining what files get added to an archive.Tip: If archive is run multiple times against a file using the same archivedescription, a new copy of the file is added to the archive each time that archive isrun. To simplify retrieve, store only one copy of a file in each archive.Backups protect against file damage or loss that could occur through accidentaldeletion, corruption, disk crashes, <strong>and</strong> so forth. The server maintains one or morebackup versions for each file that you back up. Older versions are deleted asnewer versions are made. The number of backup versions the server maintains isset by your administrator.Archive copies are saved for long-term storage. Your administrator can limit howlong archive copies are kept. The server can store an unlimited number of archiveversions of a file. Archives are useful if you need to go back to a particular versionof your files, or you want to delete a file from your workstation <strong>and</strong> retrieve it at alater time, if necessary. For example, you might need to save spreadsheets for taxpurposes, but because you are not using them, you do not want to leave them onyour workstation.Related concepts“Restore data from a backup set” on page 183Pre-backup considerations (Windows)This section discusses some items to consider before you back up your data.LAN-free data movementLAN-free data movement shifts the movement of client data from thecommunications network to a storage area network (SAN). This decreases the loadon the Tivoli Storage Manager server.The SAN provides a path that allows you to back up, restore, archive, <strong>and</strong> retrievedata to <strong>and</strong> from a SAN-attached storage device. Client data moves over the SANto the storage device using the Tivoli Storage Manager Storage Agent. The TivoliStorage Manager Storage Agent must be installed on the same system as the client.All Windows clients support LAN-free data movement.LAN-free prerequisitesTo enable LAN-free support, you must install <strong>and</strong> configure the Tivoli StorageManager Managed System for SAN Storage Agent on the client workstation.The Tivoli Storage Manager Managed System for SAN Storage Agent is a separateproduct <strong>and</strong> it is included on its own DVD, with the Tivoli Storage Manager forSAN product.106 IBM Tivoli Storage Manager for Windows Backup-Archive Clients: <strong>Installation</strong> <strong>and</strong> <strong>User's</strong> <strong>Guide</strong>

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