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Page faults/sec and Exchange


One AD site - running an SCC Mailbox cluster, two Hub/CAS combo boxes. All Exchange 2007.

I notice on one of the Hub/CAS combos that sometimes users complain of poor OWA performance. If they access via Outlook, all is fine, as is accessing the other Hub/CAS combo.

I can see high page faults/sec (35,000) and pages/sec (25) during these times. I'm not sure if they are the cause or an effect.

How would I find out more? There must be a bottleneck but I don't know where?

OS is Windows 2008 Server.
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Please run a exchange best practises analyser and exchange troubleshooting assistant on the affected exchange server
Sounds like a memory bottleneck.
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"Sounds like a memory bottleneck. "

How can we prove this and what can we do to fix?
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