Hi Geoff,
What I have seen is following.

If you have a basic TSM 6.1 installation I normally count at least TSM 5.5 DB x 
3 to be sure.
If I turn on DEDUP on TSM 6.1 I count TSM 5.5 DB x 6.

And yes the DB will be large for you.
The only thing I struggle with right now is how much Arch Log and Active Log 
space you need. 

Best Regards
Christian Svensson

Cell: +46-70-325 1577
E-mail: Christian.Svensson AT cristie DOT se
Skype: cristie.christian.svensson
________________________________________
Från: ADSM: Dist Stor Manager [ADSM-L AT VM.MARIST DOT EDU] för Gill, 
Geoffrey L. [GEOFFREY.L.GILL AT SAIC DOT COM]
Skickat: den 2 oktober 2009 02:01
Till: ADSM-L AT VM.MARIST DOT EDU
Ämne: TSM 6.1 and the ever expanding DB

I'm finding that what I know about how the DB works in 5.5 doesn't
really equal how it works in 6.1. On a Linux box I brought up to migrate
clients to a 6.1 server I created a 20GB log and 100GB DB. There 'will
be' about 150 nodes moved to this instance but currently about 20 are
backing up. My 5.5 server, on AIX 5.3, has a 125GB DB about 50% used, a
11GB log and it backs up 500+ clients per day with no issues.



Last nights backup on the new box is telling me there is no more space
in the database so backups are failing. After backing up systems for 30
days? I find that way out of whack from how 5.5 works and it seems to be
telling me I need more than 10 times the space to keep 6.1 up. I can't
believe 20 computers have eaten up 100GB of DB space in such a short
period of time.



I have a case open with IBM to discuss but I'm wondering what others are
finding that are using 6.1. Perhaps I'm missing something in my setup
that is causing the problem (I hope) because if not I don't want to even
think about how much disk I have to add to the current box so I can
upgrade it and make it run with the 400+ systems that will stay on it.



Anyone else seeing this or have an idea what I may have missed?



Geoff Gill
TSM/PeopleSoft Administrator

SAIC M/S-B1P

4224 Campus Pt. Ct.

San Diego, CA  92121
(858)826-4062 (office)

(858)412-9883 (blackberry)