The client sends an estimate of the amount of data it is sending.  If a
file is calculated to be too big to fit in the 1st storagepool, it is
written to the 2ndard stgpool (usually tape) instead.

>>> Richard.Mochnaczewski AT STANDARDLIFE DOT CA 11/17/05 10:22 AM >>>
Hi *,

I have a 300Gb storage pool which I used last night to send a 306Gb
Oracle database using RMAN ( no compression on the backup ). I checked
the usage of the storage pool after the backup, and it only shows 60%
used. However,I checked the activity log and I condfirmed that 306Gb of
data was sent to the server and I did a q con on the volumes in the
storage pool and all the files are there. Shouldn't the storage pool
show 100% used ? No migrations ever happened during the backup the whole
time it ran. Shouldn't a migration to tape have kicked off as I had
exceeded the storage pool capacity ( we set migration to 100 during the
night to not allow migrations unless absolutely necessary ) ?

Rich