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Exchange 2007 Information Store consuming high CPU

I have a virtual Exchange 2007 box(VMWare VSphere 5.1, Windows 2008 R2, 2 processors, 12gb RAM)  I have updated the server to SP3 in an effort to resolve the store.exe problem with no success.  I have killed AV, I have moved all clients to Cached Mode after monitoring individual users with exmon.  Still no success.    Store.exe is still consuming almost all of the processor and memory.  My server only has 60 mail boxes.
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PSTEL
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PSTEL
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Will SzymkowskiSenior Solution ArchitectCommented:
This is by design. Exchange will consume as much RAM that is available by default. This is so that the users connecting with Outlook clients will have the best end user experience.

You can however cap the store.exe using adsiedit and modifying the configuration partition.
Limit Exchange store.exe RAM

Will.
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PSTELAuthor Commented:
I understand about RAM but CPU is the larger concern.
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Will SzymkowskiSenior Solution ArchitectCommented:
Ahh...my mistake, read it wrong. With Store.exe if you disable the search service on the server does the CPU drop?

Also when you run EXBPA do you get an errors that need to be addressed?

I would also check out the link below which outlines CPU requirements based on specific mailbox configurations.
Mailbox Sizing Cheat Sheet

Will.
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