I would think you would be better off gathering the allocated/used disk sizes 
from the client machines themselves.
I have a Powershell script which will do this for Windows servers if you need 
an example.

Steve Schaub
Systems Engineer II, Backup/Recovery
Blue Cross Blue Shield of Tennessee

-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of 
Lee, Gary
Sent: Friday, March 17, 2017 7:41 AM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: [ADSM-L] trying to get rough estimate of the equivalent of a full 
backup

Tsm v 7.1.7.1 running under RHEL 6.8.

Trying to fill out a vendor's questionnaire regarding backup.
They want an estimate of the size of a full backup of our environment.
Given the infinite incremental nature of tsm, will the following script work?
I am also open to a better suggestion if it exists.
select node_name, -
sum( capacity* pct_util/ 100/ 1024 ) as "used GB" - from filespaces - group by 
node_name - order by node_name

thanks for the help.

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