Copyright © Acronis, Inc., 2000-2010 137At the Delete operation, the vault content will be deleted from the storage node database without accessingthe tapes. The plans and tasks that use this vault will fail.The backup archives, belonging to a deleting centralized vault on a tape library, will be deleted as well, butthese archives might be recovered by any storage node through the Rescan operation.Actions with archives on tapes in a libraryThe following are common functions for archive data management for a backup archive selected inthe Centralized vaults view of the console, when the current vault is a tape library: Validate, Delete,Delete all archives. Deletion in the storage node database is performed without access to tapes. Abackup archive deleted from a tape library vault can be restored after the deletion by the Rescan (p.139) operation, which is performed for all the tapes keeping the archive’s data.The Rescan operation for a tape, where a backup was deleted from, can recover the backup, as itrecreates information on the content of the backup in the storage node database.If all the backups are deleted from a tape, it is considered as free. So the deleted backups will be irrevocably lostafter the first writing to the tape.Backing up to tape libraryAt creating a backup policy/plan with a tape library destination, you set up the backing up in thesame way as with other storage devices. The only difference is the additional Tape support (p. 113)options that can be set up during the backup policy/plan creation. These options enable you tospecify how the created backup policy/plan should use tapes from the tape library, however theoptions’ presets increase usage efficiency of both whole tape library and each tape.To view and change the tape options, select Options > Default backup and recovery options >Default backup options > Tape support from the top menu.To change the settings of the backup policy/plan to be created click Change… in the Backup optionssection on the Create backup policy/plan page. It opens the Backup options window where the Tapesupport page is contained with the pre-defined values.When backing up to a tape and the end of the tape is reached, a free tape will be mountedautomatically and the operation will continue onto the new tape.While a backup task is running, the following tape-specific information is accessible from the console: number of tapes currently used by the backup operation labels of the tapes used by the task up to the current time in case of backup splitting label of the tape that is currently written.Recovering from tape libraryData recovery from archives located on tape devices is performed in the same way as with otherstorage devices.When recovering, you start creating a recovery task, select the tape device vault, and select thearchive and the backup to recover data from. At task creation, the program uses the storage nodedatabase instead of accessing tapes. However, selection of data to recover (e.g. some files or specificvolumes) requires reading of one or more tapes, so it might be durational.The program finds the tapes and inserts them automatically in the right order. The Task NeedInteraction window comes up if a required tape is not found.
