Re: Performance help
- From: "Eric Bockelman" <eric_bockelman@xxxxxxxxxxxxxxxxxxxxxxxxxxx>
- Date: Tue, 25 Apr 2006 09:46:22 -0400
The disk subsystem is the biggest performance factor with Exchange. Each
user generates an amount of random I/O operations against the information
store. If your disk subsysem can not keep up with the number of I/O, your
performance will suffer.
How do you increase the amount of I/Os you can sustain? The short answer is
to add more disk spindles. When you spec your new server for your upgrade,
you can ensure you meet your I/O needs with the appropriate number of disks.
Take a look at this article:
http://www.microsoft.com/technet/prodtechnol/exchange/2003/library/perfscalguide.mspx
It will walk you through Exchange 2003 performance issues, how to determine
how many IOPS per user you are currently sustaining, and how to calculate
disk subsystem requirements. There is also a lot of good information about
other tuning you can do.
Eric Bockelman
Principal IT Infrastructure Specialist
Windows Platform Engineering
Symantec Corporation
"KP" <kpollard@xxxxxxxxxxxxxxxx> wrote in message
news:%23GFe%23p$ZGHA.1352@xxxxxxxxxxxxxxxxxxxxxxx
We currently have one exchange 2003 server with 1900 user accounts. Our
average mailbox size is about 90MB and our Public Information Store
database is 174GB. We are spread out over 15 locations all connected with
T3's so bandwidth is not an issue. But we do get Outlook running very slow
on some systems. I want to upgrade the hardware. I have 2 new servers.
My questions are:
1. What is the "real" user load per server. Is my current config too much?
2. If I setup up the 2 new servers with exchange and split users between
them and used our old server as a "Front End" server, would this help?
3. What advice can you give me to increase performance?
Thanks
.
- References:
- Performance help
- From: KP
- Performance help
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