You could use bpmedialist to list all your media & the number of bytes on
them and compare the KB on tapes marked as "FULL" against the stated
capacity of the tapes.

This could be done automatically with a long-output into a script but I
haven't time to breadboard one together today. 

Good Luck!

-M

-----Original Message-----
From: veritas-bu-admin AT mailman.eng.auburn DOT edu
[mailto:veritas-bu-admin AT mailman.eng.auburn DOT edu]On Behalf Of Jerry
Sent: Thursday, April 07, 2005 12:30 PM
To: veritas-bu AT mailman.eng.auburn DOT edu
Subject: [Veritas-bu] compression calculation


I'm trying to estimate how many tapes to purchase for
a backup project.  Is there a way to tell the
compression ratio I'm getting with hardware
compression?  I have some backups of various systems
but unless they are all the same type of backup and
the tape is full, I'm not sure how to calculate it.

Jerry


                
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