Pooooor TDP for Exchange Performance via SAN
2002-03-18 01:37:50
Hi everybody!
I'm sitting here looking at my customers environment and wonder
how TDP for Exchange
is sooooo slow via SAN.
We have a complete Win2000 environment with all the newest
patches installed
(Server 4.2.1.12, StorageAgent 4.2.1.12, API 4.2.1.30, TDP Exch.
2.2)
We share two drives of a 3584 library via SAN data gateway
(newest firmware).
The backup via LAN (!) is nearly as fast as it could be (up to 12
MB/s without compression).
But the backup via SAN ist very slow.
It starts slow (at 1200 KB/s) and slows down to 800 KB/s.
Does anyone have recommendations tuning the dsm.opt-file or
tdpexc.cfg-file...
my dsm.opt-file:
tcpwindowsize 63
tcpbuffsize 32
txnb 25600
my tdpexc.cfg-file:
buffers 4
buffersize 2048
... or any other ideas?
(Are there any rules-of-thumb how to tune this options?)
Thanx in advance,
Karsten Huettmann, c.a.r.u.s. IT AG, Germany
-----
Mit freundlichen Grüssen / with regards
Mit freundlichen Grüssen / with regards
Karsten Hüttmann
----------------------------------------------------------
Karsten Hüttmann
Karsten Hüttmann
c.a.r.u.s. Information Technology AG
Advanced System Center
Bornbarch 9, 22848 Norderstedt, Germany
E-Mail: karsten.huettmann AT carus DOT de
Firma: +49.40.51435.3231
Mobil: +49.171.7634388
Fax: +49.40.51435.1111
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