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IOPS performance question RRS feed

  • Question

  • According to the Technet

     

  • Physical Disk\Disk Transfers/sec counter over the peak 2 hours of server activity.
  • Calculate your current IOPS/mailbox as described in the following formula:

    IOPS/mailbox = (average disk transfer/sec) ÷ (number of mailboxes)

    THen My question, after I get the IOPS/Mailbox, how do I know the bottomneck is the disk IO ? Thanks

Thursday, February 9, 2012 10:30 AM

All replies

  • You have not mentioned the Exchange version you are looking at but start with the notions containted here http://technet.microsoft.com/en-us/library/aa997558(EXCHG.65).aspx You want to look at the values of the disk latency in disk Transers /sec. Different versions of Exchange will have different recommend values, so you will need to make sure that you are looking at the right ones. I have to ask why you are asking this question- do you have a perf issue? Calculating IOPS per mailbox is meant to be done at the planning stage so you go out and buy the correctly sized disk units.

    Cheers, Rhoderick

    Thursday, February 9, 2012 2:55 PM
  • I am using Exchange 2007, because most user using online mode and some user always complain performance issue.

    so I am checking what is the bottomneck? DC performace? Mailbox Server Disk IO and etc

    Friday, February 10, 2012 2:31 AM