Post reply

PhysicalDisk perfmon counters versus LogicalDisk counters

  • June 17, 2013 at 5:52 am

    #295363

    Hi,

    We have a Physical disk which is partitioned into 4 drives,D,E,F,J. I am monitoring individual logical disk idle time and physical disk idle time. These are a day's average values

    Counter Value

    LogicalDisk(D:)\%idle time 84.92676725

    LogicalDisk(E:)\%idle time 87.60788474

    LogicalDisk(F:)\%idle time 94.81640539

    LogicalDisk(J:)\%idle time 98.49689629

    PhysicalDisk(1 D: E: F: J:)\% Idle Time 74.4477885

    I noticed PhysicalDisk valueis much lower than average of LogicalDisk values,even though LogicalDisk values look good. PhysicalDisk value is suppose to be average of LogicalDisk values right? Why this variation caused?

    Thank you

  • June 17, 2013 at 6:06 am

    #1624554

    IT researcher (6/17/2013)

    PhysicalDisk value is suppose to be average of LogicalDisk values right? Why this variation caused?

    No, I don't think that's the case. It's the % of time that the physical disk is actually idle, e.g. where all logical volumes it's supporting are idle at the same time, so it'll always be lower than the individual logical volumes.

Viewing 2 posts - 1 through 1 (of 1 total)

You must be logged in to reply to this topic. Login to reply