Memory Sizing Exchange 2007
Posted on 2011-04-28
Been up and down reading articles so I give up and gonna ask!
Vmware vSphere 4.0 host with Windows Server 2003 x64 and Exchange 2007 running Mailbox, Hub and Transport roles.
Current VM config is: 2 Virtual CPUs, 4gb Ram. Current CPU usage for a half a day is about 30% and 55% of allocated ram. Performance Monitor shows heavy Page File reads, server performance feels slow and Outlook users frequently advise of poor performance.
According to Microsofts "Best Practices" based on memory sizing I calculate I should allocate 10gb of ram, so I did. Thus far all seems OK, but Vmware states of the 10gb I allocated merely 10% is being used for Guest Mem on the host.
Maybe I am prematurely writing this, but so far it appears Vmware recommendations and Microsofts conflict. I would love to not allocate so much ram, but fear heavy Page File Reads which *may* increase latency for that iSCSI storage node.
Any ideas or should I wait for a full days use and see what happens?