Installation and User's Guide

Related conceptsChapter 9, “Storage management policies,” on page 235Related tasks“Set the client scheduler process to run as a background task and startautomatically at startup” on page 221Deleted file systemsWhen a file system or drive has been deleted, or it is no longer backed up byTivoli Storage Manager, the existing backup versions for each file are managedaccording to the following policy attributes: Number of days to keep inactivebackup versions, and number of days to keep the last backup version (if there isno active version).If you do nothing else, active backup versions remain indefinitely. If you do notneed to keep the active versions indefinitely, use the expire command to inactivethe active versions.You can also use the delete backup command to delete individual backupversions, or the delete filespace command to delete the entire file space. YourTivoli Storage Manager server administrator must give you "delete backup"authority to use these commands. If the file space also contains archive versions,you must also have delete archive authority to use delete filespace.Use the query session command to determine whether you have delete backupand delete archive authority. Alternatively, you can ask your Tivoli StorageManager server administrator to delete the file space for you.When you delete a file system, it has no effect on existing archive versions.However, if you no longer require the archive versions, you can use the deletearchive or delete filespace commands to delete archives.Related conceptsChapter 9, “Storage management policies,” on page 235Removable media backupTivoli Storage Manager backs up your removable media (such as tapes, cartridgesor diskettes) based on the drive label, not the drive letter.If a drive has no label, the backup does not occur. This use of drive labels permitsyou to perform such tasks as backing up different diskettes from the a: drive.For a restore or retrieve, Tivoli Storage Manager maintains a separate file space foreach drive label. These labels become the file space names on the server. If youchange the label of a drive you already backed up, Tivoli Storage Manager views itas a new drive and does not relate it to your previous drive.Because Tivoli Storage Manager uses the labels to manage backups and archives ofyour removable media, you occasionally need to use those labels to locate datawhen using commands. For example, if you try to restore a file on diskette orDVD–ROM using d:\projx\file.exe as a file name, Tivoli Storage Managersubstitutes the current label of your d: drive for the d:. Ifthed: drive label isd-disk, d:\projx\file.exe becomes {d–disk}\projx\file.exe, and the label isenclosed in braces.156 IBM Tivoli Storage Manager for Windows Backup-Archive Clients: Installation and User's Guide