Copyright © Acronis, Inc., 2000-2010
137
At the
Delete
operation, the vault content will be deleted from the storage node database without accessing
the 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, but
these archives might be recovered by any storage node through the
Rescan
operation.
Actions with archives on tapes in a library
The following are common functions for archive data management for a backup archive selected in
the
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. A
backup 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 it
recreates 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 lost
after the first writing to the tape.
Backing up to tape library
At creating a backup policy/plan with a tape library destination, you set up the backing up in the
same 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 to
specify how the created backup policy/plan should use tapes from the tape library, however the
options’ 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 options
section on the
Create backup policy/plan
page. It opens the
Backup options
window where the
Tape
support
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 mounted
automatically 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 library
Data recovery from archives located on tape devices is performed in the same way as with other
storage devices.
When recovering, you start creating a recovery task, select the tape device vault, and select the
archive and the backup to recover data from. At task creation, the program uses the storage node
database instead of accessing tapes. However, selection of data to recover (e.g. some files or specific
volumes) 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 Need
Interaction
window comes up if a required tape is not found.
