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about performance counters used for Sql

  • November 7, 2013 at 12:00 pm

    #282225

    I would like to know what is the difference between counter LogicalDisk\% Disk Read Time and PhysicalDisk\% Disk Read Time.basically what is the difference in logical and physical disk related counters.

  • November 7, 2013 at 2:35 pm

    #1664931

    If you have 1 physical disk in a machine, that disk can logically be partitioned into separate "disks" like a C drive and a D drive. It's still only 1 physical disk but appears as 2 "disks". So the logical reads of the C drive and D drive would add up to the reads for the actual physical disk.

  • November 8, 2013 at 12:22 am

    #1665004

    Thank you

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