Have you eliminated network throughput by testing an FTP of a large file
and see if that gives you significantly better throughput than TSM
client throughput  ?

Do you have too many clients connecting at the same time ?   Have you
tried a single client backup with no other activity ?

Just a few things to check.

-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
Brecton Whitten
Sent: Thursday, February 02, 2006 1:39 PM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: [ADSM-L] NetWare performance issues

Hi all,

  Netware group at our location is not happy with backup and restore
performance using TSM. We are seeing roughly
4 to 5 GB per hour at best. We have tested going to SSA disk pools, SATA
disk pools and directly to 3590/3592 tape FC. We don't see very much
difference in these methods. Typical Netware client is 150,00+ files
with 25 to 40 GB per client. We also have Groupwise and the performance
for those is roughly 20 percent worse.

  Clients are mostly 5.1 and 5.2.

  TSM servers are P615/4GB ram and P520/4GB ram running AIX 5.2 and TSM
server 5.2.3

  Most clients are GB Eth and we see similar performance on Windows
servers with similar volume sizes/number of files. It seems to me that
this is mostly a function of a large number of small files. We also have
AIX, Solaris and Oracle clients and performance is generally better on
those clients (especially Oracle Rman/TDP).

 I have looked through the postings and have not been able to glean much
of a consensus about what throughput should be for this type of
configuration. We have tried many of the parameter changes that have
been suggested ( buffer/tcp window sizes, quiet option, etc.) without
much success. If anyone has overcome these types of problems or can give
me some definitive answers ( even if the answer is 'that's the best
you'll get' ), please e-mail me offline.

Thanks for reading and thanks to all who post on this site.


       Brec Whitten

       UAB Hospital


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