When you issue the backup of a storage pool, it will back up THAT storage
pool.  Having cache on helps if you need to do a restore from the client.
 If it's still on the disk storage pool it will restore from there instead
of tape.  You should do the backup storage pool BEFORE you do a move data or
kick off migration of your disk storage pool.

Tina Hilton
Thomson Consumer Electronics
 ----------
From: Peter Thomas
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Cached Data and Backup Stg Pool
Date: Friday, August 22, 1997 1:06PM


I just noticed that although I do have caching enabled on my "primary"
storage pool on disk (MLI_TOR_BACKUP), that if I do a migration to a "copy"
pool on Tape (MLI_TOR_BKP_ONSITE) followed by a backup Storage Pool of
MLI_TOR_BKP_ONSITE to MLI_TOR_BKP_OFFSITE, even though all the data is
still present 9in cache format) on the MLI_TOR_BACKUP, the system calls for
mounts of the tapes belonginging to MLI_TOR_BKP_ONSITE!

is this expected operationn, and if so, what is the purpose of the CACHED
data?

Peter T