You have to consider that just like a real tape library, you have to allow
for reclaimable space. Take a look at your present tape library and see how
much of your occupied space is reclaimable. 

-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU]On Behalf Of
William Boyer
Sent: Thursday, June 21, 2007 11:03 AM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Somewhat OT: Sizing a VTL solution


Has anyone just gone through sizing a VTL solution for a library replacement? 
Is it as simple as taking your current
occupancy/retention, applying for some compression and using that figure for 
the amount of storage behind the VTL? Or maybe I'm just
trying to make something harder than it is. Wouldn't be the first time! :-)

TIA.

Bill Boyer
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