Exchange 2007 not using available RAM
Hi, We have a recently-virtualized Exchange 2007 server with 24GB of RAM allocated. For some reason (defying all logic) it is using less than 4GB of RAM at any given time. The 24GB show available in the OS (64-bit 2003R2) but Exchange and the store are not caching the information store like they should.
I found a couple places in ASDIedit.msc where there were limits you could put on the information store but they are <not specified> for mine. Really strange.
Any help would be greatly appreciated.
TooMuchRAM.png
I found a couple places in ASDIedit.msc where there were limits you could put on the information store but they are <not specified> for mine. Really strange.
Any help would be greatly appreciated.
TooMuchRAM.png
SOLUTION
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ASKER
Yes we are having slow performance. We have about 250 mailboxes with a handful for super power users with no quotas. A couple 20GB mailboxes even with archiving 6 months back.
I thought 24 GB of RAM would be excessive but wanted to see how much it would use hoping that it would improve performance.
I thought 24 GB of RAM would be excessive but wanted to see how much it would use hoping that it would improve performance.
ASKER
That link mentions 2GB for each role and this is a standalone Exchange server, so it should be using 8GB for those roles
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Store is using 477K. The old physical server had 4GB of RAM. Fortunately it was installed with x64 OS. Processes tab attached. No errors or warnings in system/app logs.
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I was able to resolve by waiting 12 hours, when the RAM usage started looking good.
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