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#Power
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  • 1.  iostat r+w/s

    Posted Wed November 19, 2008 04:58 PM

    Originally posted by: emreb


    Hi All I am trying to understand max iops of my disk system.On aix there is one disk that connected via fc to ibm n3700 san that lun consist of 5 x 133GB 15K disk.
    I am testing with this command --> sync; date; dd if=/dev/zero of=/sanlun/1000m bs=1024k count=1000; date; sync; date.This process almost take 50 second ,in iostat -d 1 50 maximum r+w/s colum value is 183
    How this happen ? In my calculation 5*15 K is approximately 180*5=900 iops should be happen ? My calculation is wrong or tried method is wrong ? What is your suggestion ?
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