Tape backups, Tsm backups – Storix Software SBAdmin TSM Edition Users Guide User Manual
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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
days, the backup will not be overwritten and the user will be required to expire the backup manually
before proceeding. Refer to
for the steps to manually expire a backup.
These global retention policies may be overridden for specific jobs by
changing the
option in the backup profile.
TSM Backups
Backups written to TSM servers are never overwritten by a new backup since each backup has a different
object name (constructed using the backup Label ID, job ID, etc). A new copy of a backup will be written to
the server each time a job is re-run. This option is used to free space on the server by automatically
removing old backups when new backups are started. Two options are available for backups to disk
(directories):
1. Never automatically expire or remove prior backups of the same job.
Select this option if no backups should ever be automatically expired when writing new backups. This
will require that the user manually expire and remove each prior backup that is no longer needed. The
Storix System Backup Administrator
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Version 8.2 TSM Edition User Guide