The other factor to consider is that you should have the delay period for
volume reuse on your tape storage pools set equal to the length of time you
keep your database backups. Depending on how often you perform reclamation
of those pools, these could add up too!

Mark


-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU]On Behalf Of
Prather, Wanda
Sent: Wednesday, April 05, 2006 1:53 PM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: TSM DB backup question


The factor to decide:

If you somehow had a TSM data base crash, or corruption in the TSM data
base, how far would you be willing to restore your data base backwards
in time?

If you think you would never use that 30 day old TSM DB backup, you
don't need to keep it.
I think a DB retention of 5-10 days is more common.

And no, you can't put the TSM DB backups in a storage pool.


-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
Vats.Ashok
Sent: Wednesday, April 05, 2006 1:39 PM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: TSM DB backup question


Hi List,
We have tsm 5.3.00 on AIX. We run TSM database backup which runs once /
every day  consumes media from scratch pool. We keep these backups for
at least 30 days. consuming almost 30 *200 GB tape media. Our data base
is about 161 GB so my question is can we reduce the retention time of
TSM db backup to 7 days. I am not sure what are the factors which
decides how long we need to keep these volumes around. Also Does anybody
have a storage pool defined for TSM DB backups. is it possible to do
that ?

Thanks,
Ashok

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