IMHO, minimum disk pool size is 3 to 5 times the daily change rate.
That is the ABSOLUTE MINIMUM; hopefully you can get lots more than that.

If you don't know the daily change rate, try 5% of data volume for
normal files.  It will probably be closer to 2%.

Now extrapolate for the data growth rate and you can get a scary figure
quickly :)


-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
Justin Case
Sent: Friday, April 29, 2005 11:54 AM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: diskpool sizing formula ?

Need some finding where the formula is for sizing diskpool for nightly
backs I know its in one of the manualls
but I can not find it. So anyone who know where I would be able to find
please let me know.
Thanks

Justin Case
Duke University..