The fastest backup I can get from a Win2003 server, TSM 5.4.0.4 client, to
an AIX TSM server, 5.4.0.0 is 17Mb/sec. over GigE with a dedicated 2nd nic
for backup only.  I'd like to hear from others who are getting better
speeds and what tuning can be done.  That's 3000 files averaging 100Mb
each so it takes about 4.5 hours to transfer about 300 Gig.




Sam Sheppard <SHS AT SDDPC.SANNET DOT GOV>
Sent by: "ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU>
01/31/2008 04:08 PM
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"ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU>


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Subject
[ADSM-L] Win2K3 backup performance






We have a Windows 2003 client running TSM 5.4.1 backing up to a Solaris
10 TSM server running the 5.4.1 server.

The client has several very large files to be backed up (300-400GB). We
are finding on a 1.3GB test file that we can only get a throughput of
about 10MB/sec (looks like 100Mb speed) even though this client is
configured on a GigE VLan.  One interesting aspect just discovered is
that a restore of the same file got speeds of 37MB/sec, which is about
the same as an FTP of the same file from the client to the server.
Client, switch, and server all set to 1GB full.

At this point, I'm completely mystified as to what might be behind
these performance anomalies.  I would expect much higher throughput
rates on all of these tests, but would be satisfied if the backup would
just perform at the same speed as the others.

Client options:                  Server Options:

TCPWindowsize   63               TCPWindowsize      131072
TCPBuffsize  32

Thanks
Sam Sheppard
San Diego Data Processing Corp.
(858)-581-9668