Backup Tape pool status shows full and percentage utilized is 20.5

[ahleia]

There are four volumes(LTO3) in the backup tape pool. Out of four tapes, the status of two tapes shows full and the percentage utilized shows less than 21%. Since the status of the tape is full, the migration is not working. Please let us know, how to resolve the issue.

 

[heada]

You need to look at the reclamation threshold for that pool. Once a volume is full (100%) it will stay in the full state until it is totally empty (0%) In order to help this process along, TSM provided for condensing tapes that are no longer 100% full. TSM will look at the percent reclaimable of a tape and compare it to the reclamation threshold for the pool. If the %reclaim is above the reclamation threshold, it will move all the data to a volume that is in the filling state or start writing to a scratch volume.



step 1, determine the reclamation threshold for the pool.

q stgpool {pool_name} f=d



step 2, determine if the volume is above the threshold

q vol {vol} f=d



step3, either lower the threshold to force a reclaim to start or move the data off the volume manually

update stgpool {pool_name} reclaim={%}

or

move data {vol}



-Aaron