VMware vSphere

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  • 1.  Storage Performance

    Posted Jul 05, 2010 08:37 AM

    Hi All,

    I have an ESX4 environment with a Dell Equallogic PS4000e iSCSI SAN.

    I am using software iSCSI initiators with fixed paths to the LUN's.

    Last week we started an Oracle DB import (approx 42GB data), this process killed the other VM's sharing the same LUN!

    At first I didn't know the cause so I called VMWare tech to help, they identified that the VM running Oracle was thrashing the SAN (very high disk writes).

    I need to apply some sort of throttling, does anyone have any recommendation or an experience with this kind of issue?

    Thanks



  • 2.  RE: Storage Performance

    Posted Jul 05, 2010 08:47 AM

    Check if this helps

    http://kb.vmware.com/kb/1008113

    http://kb.vmware.com/kb/1010922

    -janardhan



  • 3.  RE: Storage Performance

    Posted Jul 05, 2010 01:27 PM

    There is a feature in the next version of vSphere (4.1 it looks like) called Storage I/O Control. It is designed to help with the issue you're describing. Take a look below for more info:

    http://vmblog.com/archive/2010/06/18/vmware-storage-io-control-sioc-vsphere-4-1-feature.aspx

    Have you tried messing with the Disk shares on a per VM basis right now to see if that helps?