Steve,

It's a shot in the dark, but did you see Del Hoobler's posting regarding
the slowdown in backup performance of TDP Exchange when you apply TSM
5.3 client/API code.
You don't mention your client code level and I appreciate that the
posting related to backup performance, but I thought it might be worth a
shout.

http://msgs.adsm.org/cgi-bin/get/adsm0512/204.html

Leigh

-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
Schaub, Steve
Sent: 24 January 2006 21:58
To: ADSM-L AT VM.MARIST DOT EDU
Subject: [ADSM-L] Exchange restore slowdown

Environment: 5.2.2.0 TSM server on AIX using 3592 tape & ESS disk.
TDP 5.2.1.0 on Exchange 2003 server running as a vm under ESX 2.5.2

We have several corrupted mailboxes in the 2 stores on a particular
Exchange server.
We are trying to restore to a recovery group on a different server,
where we will then use export and merge to piece the affected users back
to health.
What is happening is that we get the first 8-9GB (compressed figure)
within half an hour, but then the restore slows to a crawl - it has been
running for 4.5 hours now and is only up to 14.7GB (guessing we have
around 22GB total to restore).
The same tape has been mounted the entire time, there is no other
process running to conflict, the TSM server and the recovery server are
both underutilized in terms of cpu/memory/network.
Has anyone ever seen this type of behavior or have a suggestion where I
can look next to try to find the bottleneck?

did I mention that this store is the one used by the execs?  nuff said
on that.

Steve Schaub
Systems Engineer, WNI
BlueCross BlueShield of Tennessee
423-752-6574 (desk)
423-785-7347 (cell)

Please see the following link for the BlueCross BlueShield of Tennessee
E-mail
disclaimer:  http://www.bcbst.com/email_disclaimer.shtm