Is it possible to change the retention period when duplicating from a disk
staging unit to tape? We have a 2-Week retention period on our disk staging
units but have hit a wall with regards to disk space (and cant purchase more
disk space at the moment). I would like to:

1. Drop the retention period to 1 week for anything being backed up to the
disk staging unit (I know how to do this).
2. Change the retention period to 2 weeks when we duplicate to tape.

Any help would be appreciated.