Backup retention policy, Tape backups – Storix Software SBAdmin User Guide User Manual
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Backup Retention Policy
The backup retention policy (also referred to as the overwrite policy) determines whether or not a new backup
should be allowed to write over (thereby destroying) a current backup. A current backup is defined as one with a
backup label currently on record. The default policy for tape backups is to prevent accidental overwriting by
requiring the user to manually expire a current backup before the same tape may be reused. The default policy
regarding disk backups is to keep all disk backups on file unless explicitly expired (and removed) by the user.
This option allows you to define the global backup retention policy. This will apply to all backup jobs unless you
explicitly change the backup retention policy for a particular backup job. Refer to the
the
settings for more information on overriding the global backup retention policy.
To change the global backup retention policy, select
File
!Preferences!Backup Retention Policies
from the
menu bar. The following screen will appear:
Tape Backups
Before any backup is performed to tape, the backup label is read. If a prior backup exists, a check is made
to see if the backup label is still on file. If so, the setting applied here will determine the action that will be
taken:
1. Never automatically expire or overwrite a backup tape. User must manually expire all tape
backups.
Select this option if no data will be written to the tape and the backup will fail with an error message. In
order to overwrite the backup, the user must expire the backup manually. Refer to
for the steps to expire a backup.
2. Automatically expire and OVERWRITE a prior tape backup that is at least: __ days or older.
Select this option if the backup will proceed ONLY if the backup to be overwritten is at least the
specified number of days old. You can always allow expiration and overwriting of a prior backup
tape by setting this value to 0. If the backup currently on the tape is less than the specified number of
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Version 8.2 User Guide