Divide the amount of data on your FULL tape volumes by the native capacity.
Here's a sample SQL statement. You'll need to filter it for your tape
storagepools and only FULL volumes.

select volume_name,cast(est_capacity_mb/xxxx as decimal(3,1)) from volumes

Use these values for xxxx:

        3590B           10240 (10GB native)
        3590E           20480 (20GB native)

Extended length cartriges double the value.

Bill Boyer
DSS, Inc.