Only a working knowledge of your environment can answer this question.

How big of a disk pool are you looking at?
Do you do your database backups hot or cold?
Would you have any time constraints around resources (tape drives for one)?
Would you have to force migrations in order to free up drives or help
facilitate the creation of offsites?
What are the sizes of the databases?
Is there a likelihood that you will want to restore shortly after doing the
backups?

Any of the scenarios are valid, it's a matter of what best fits in your
environment?

Personally, I would be tempted to set the new server up working the same way
the old one did.  Then take a step back and look for ways to improve it.

For what it's worth
Jim
-----Original Message-----
From: HEMPSTEAD, Tim [mailto:Tim.HEMPSTEAD AT READING.SEMA.SLB DOT COM]
Sent: Tuesday, November 19, 2002 3:45 AM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: New TSM Server Question


Hi,

We are replacing our existing TSM server with a new one and I have a
question about storage pool configuration.

Currently our TSM server is running on the same RS6000 as our main Oracle
databases using a STK L700 tape silo connected directly to the RS6000.  The
TSM server also backs up another RS6000 running Oracle and a couple more
running Domino over a gigabit network.  The Oracle data and Domino database
data from these servers goes straight to tape whilst file-level data and
Domino transaction log data go via a disk storage pool.

We are now going to use a separate RS6000 server running TSM 5 with an IBM
3584 silo with 8 LTO drives.  This will be connected to the other servers
via the gigabit lan.

Would it be better to keep some of the data going straight to tape or would
I be better to use an intervening disk storage pool for all of the data and
then use multiple LTO drives to migrate to tape?

Thanks

Tim

--
Tim Hempstead, thempstead AT slb DOT com
Unix Technical Specialist
SchlumbergerSema


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