What I like is just do it on occupancy.
Divide GB of occupancy into your cost or desired ROI, and you have a number.

In any case, run it through your reasonableness filter before sending out
bills based on it.

At a business we were a profit center and did
backups based on GB stored.  But the number had to be cheaper than the
customers showing up with a DLT and changing their own tapes, plus do some
extra added value for it.

Does that help?

-----Original Message-----
From: Gill, Geoffrey L. [mailto:GEOFFREY.L.GILL AT SAIC DOT COM]
Sent: Wednesday, August 07, 2002 10:51 AM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Possible Bill-Back methods


Does anyone have methods defined for bill-back of GB used on TSM?

Floor space $$ + Hardware Maint $$ + Labor $$ + Software $$ + whatever
divided by something = billback

Thanks,
Geoff Gill
TSM Administrator
NT Systems Support Engineer
SAIC
E-Mail:    <mailto:gillg AT saic DOT com> gillg AT saic DOT com
Phone:  (858) 826-4062
Pager:   (877) 905-7154