Here's a select command you could run to find out if the amount of data stored 
for a client is inline with your policies.
 
select node_name,sum(physical_mb) as "POOLNAME" from occupancy where 
stgpool_name='POOLNAME' group by node_name order by "POOLNAME"
 
Replace POOLNAME with the appropriate pool.
 
As Richard points out, make sure your BACKUP STG command are being executed and 
completing successfully.
 
HTH,

Mahesh

>>> Richard Sims <rbs AT BU DOT EDU> 3/27/2007 7:47 AM >>>
On Mar 27, 2007, at 12:28 AM, Peter Billam wrote:

> Greetings. We're confused about what gets put in the Copy Storage
> Pool.
> Do the Inactive versions get put there, as well as the Active
> version ?
> ...

Yes.  From the 5.4 AIX Admin Guide:
"Copy storage pools and active-data pools provide additional levels
of data protection for clients. Copy storage pools can contain any
combination of active and inactive data, archive data, or space-
migrated data. Active-data pools, on the other hand, contain only
active versions of client backup data."

>
> (The uncertainty has arisen because our copy-pool tapes seem too empty
>  to be holding all the data we thought they were supposed to be
> holding.)

Without knowing the basis for that belief, check that your Backup
Stgpool operations are running to completion, and that such an
operation is being performed on each primary storage pool in the
hierarchy.

   Richard Sims