I am in the same predicament however I am in 64 bit mode both Aix and TSM. We
have 2 network segments - The core segment where all app traffic is
supposed to traverse (however we sneek backups in for litely populated
servers) is exhibiting this performance degradation. The backup segment
dedicated to backups only, performs at the same rate prior to the upgrade Jose
Rivera
Ris Infrastructure
908-298-3568
1-800-PAGE-MCI #1376812
-----Original Message-----
From: Burton, Robert [mailto:robert.burton AT RBC DOT COM]
Sent: Friday, November 15, 2002 10:29 AM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: TSM 5116 server / storageagent performance degradation
no we are still using 32 bit
-----Original Message-----
From: David E Ehresman [mailto:deehre01 AT LOUISVILLE DOT EDU]
Sent: Friday, November 15, 2002 10:21 AM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: TSM 5116 server / storageagent performance degradation
Did you go to 64 bit mode when you went to 5.1.1.6? We have some clients
that start out backing up at a good rate and then shift into a mode where
they are running very very slow. We now think this might be a 64 bit mode
server problem.
David
>>> robert.burton AT RBC DOT COM 11/15/02 09:20AM >>>
We were running tsm 4.2.2.4 on an S7A AIX server. We were putting through
approx 1.7 TB nightly with approx 85% going to disk storagepool and the
remaining going direct to tape. We were also testing Lan-free with Gresham
EDT-Distributape and STK acsls/9840 tape drives and we were consistently on
an UDB api backup receiving 15 MB/s
one month ago we upgraded all server and storageagents to tsm 5.1.1.6 level
and since then we have seen performance drop. We are having trouble getting
through the 1.7 TB nightly. The same lan-free tests are only getting us
around 10 MB/s.
We will be upgrading to a bigger and more powerful aix server this weekend
in hopes that the performance drop is related to our S7a server reaching the
end of its life span but I know when we upgraded from tsm 3.7 to 4.2 we saw
an increase in server performance, I'm worried that the upgrade from 4.2 to
5.1 has gone in reverse.
Has anybody sees anything remotely similar after an upgrade to tsm 5.1.1.6
???
thanks
Robert Burton
Enterprise Storage Network Analyst
Royal Bank of Canada
315 Front St West
Toronto, On, M5V 3A4
* 416-348-3849
* Robert.Burton AT rbc DOT com <mailto:Robert.Burton AT rbc DOT com>
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