Tape retention
Indicates how long a backup should be stored.
This also determined the amount of tapes needed for the backup.
If virtual tape units are used, a value of 1 can be chosen.
There is no check for correct tape into the unit.
The backup procedure initializes the present tape and makes the backup.
The backup logging and journal files are kept for 30 days.
System Management in Control
Certo Certius
more surely than sure