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How to optimize RAM and PF memory in Exchange2007?

Posted on 2009-07-02
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Last Modified: 2012-05-07
Hi,
Company is running Exchange2007(about 600 mailboxes) on HP Proliant ML350 G5 and Windows server R2 64bit, all the latest service packs installed.
When operating on server, e.g. with Exchange Management Console, all the operations are really slow. We can say, all the actions on server.
PageFile usage is approximately 7,7Gb (6Gb set in Windows) and RAM usage 3.5Gb of total 4Gb. Store.exe is using 1.5Gb memory. Is there a way to optimize memory or set parameters for it?
-Petteri
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Question by:tamfelt
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4 Comments
 
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Expert Comment

by:Mestha
ID: 24762202
You shouldn't need to do anything to optimise the RAM on the server. Exchange looks after itself.
If store.exe is only using 1.5 gb of RAM, what else is using all of the memory? Given the number of mailboxes, I would be looking to increase the amount of RAM considerably. Rough rule of thumb is 5mb per mailbox plus 2gb, which would tend to indicate you don't have enough RAM. Take the machine up to 8gb.

MMC 3.0 which Exchange 2007 uses has very poor performance on Windows 2003 x64. I actually find it is faster to admin Exchange 2007 from a Windows XP machine.

Simon.
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Author Comment

by:tamfelt
ID: 24762443
Thank you for your answer. When we bought the server, we calculated the amount of RAM and even had an consultant who accepted calculation. We should concider to get more RAM.
-Petteri
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Accepted Solution

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Mestha earned 250 total points
ID: 24762630
How did you calculate the RAM requirements? I cannot have been from the Microsoft documentation, because that is what I have just referred to. Granted MS say between 3 and 5mb per user, I always go for the higher number, particularly as RAM is so cheap.

Simon.
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Author Comment

by:tamfelt
ID: 24770098
Calculation was based on Microsoft recommendation, I did find a MS knowledgepage article and also our outside consultant accepted 4Gb, but I remember he said, as much RAM as possible.

Petteri
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