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Exchange 2010 memory requirement

I have been continuously receiving the following error from our exchange 2010 server where mailbox,Hub,CAS roles are installed.
"A significant portion of the database buffer cache has been written out to the system paging file. This may result in severe performance degradation". I run the best practice analyzer and found that "The paging file size (15000) is less than the physical memory size (30GB) plus 10 MB. It is recommended that the paging file size equal the physical memory size plus 10 MB. and refer to link
"http://technet.microsoft.com/en-us/library/e5c2d3ef-d6fe-499f-a2b6-bdd47f42177a.aspx".

Now need to know the followings:

1.I am planning to correct the page file in exchange 2010 and point to seperate drive for paging instead of C:\ drive, need advise on that.

2. Would you please suggest that what would be the memory requirement while exchange 2010 is running in VM environmnet, for my case it is now 30GB for 2200 users, i am running 4 core with 4 node cluster.
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ipsec600

8/22/2022 - Mon
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Mahesh

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Seth Simmons

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Mahesh

The link says that 3-30 MB, per mailbox, if you take upper limit, then it would be 2200 x 30
But this is Max. value.You can increase as well if wanted to.
But in order to calculate exact memory requirements, you need to calculate each parameters in the link
I think you can better calculate the exact memory requirement by exchange calculator
ipsec600

ASKER
Hi MaheshPM and seth2740 thank you so much for your excellent clarification, it helps me a lot to understand the exact requirement..
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