No.  It will actually copy the files in the pool specified not the higher
pool in the hierarchy.

Normally what you do with a traditional pool hierarchy is as follows:

backup stg diskpool copypool
backup stg tapepool copypool
update stg diskpool highmig=0 lowmig=0 (thus forcing the migration)

This ensures that all newly arrived data is backed up to the copypool.
After these three steps all newly arrived data is in both the tapepool and
the copypool.  If cache=yes, then newly arrived data (and perhaps data from
past days) is still in the diskpool as well.  Clients needing data will
fulfill that need from the most easily accessible pool.  Ideally, the
diskpool, but if the data has been migrated and flushed, then tapepool.  If
destroyed in the tapepool then from the copypool.

Remember, the backup stg operation is incremental.  So only data that is not
already in the copypool is copied from disk and tapepool.

Kelly J. Lipp
Storage Solutions Specialists, Inc.
PO Box 51313
Colorado Springs, CO 80949
lipp AT storsol DOT com or kelly.lipp AT storserver DOT com
www.storsol.com or www.storserver.com
(719)531-5926
Fax: (240)539-7175