Hi,
We are running TSM 5.5 and have been running NDMP Backups for our EMC Isilon NAS.
Due to the amount of data that we have (over 100TB) we are unable to schedule in a full backup due to time constraints.
Our original full backup took around 6 days to complete with 2 dedicated Tape Drives.
At present, we are solely running Differential backups and are quickly filling up the tapes.
Does expiry take place on older Differential backups, or does a Full need to take place to implement this?
Below is our copygroup.
Policy Policy Mgmt Copy Versions Versions Retain Retain
Domain Set Name Class Group Data Data Extra Only
Name Name Name Exists Deleted Versions Version
STANDARD ACTIVE ISIMC STANDARD 2 1 30 60
Thanks
Expiration and space reclamation will take place nonetheless, but the tapes in question will not return to the scratch pool but will stay in their storage pool in an "Empty" state.
You can check whether a storage pool is allowed to use additional scratch volumes or whether it is limited to use its assigned volumes with Q STGPOOL <poolname> F=D. The MAXSCRATCH parameter defines the number of scratch tapes a pool can request.
You can check with Q VOL STGPOOL=<poolname> ST=empty how many empty volumes are available to the pool for future use.
To return empty volumes to the scratch pool unassign them from their storage pool with
DEL VOL <volume_name>
and (important if the volume in question had "Scratch=No")
UPD LIBVOL <library_name> <volume_name> STAT=scratch
Again: expiration processing is not adversely affected by assigning tapes to a pool, they will just not return to "Scratch". No other pool than their "home" pool can use such tapes.