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Thread: Question about Best Practice Active-Active

  1. #11
    Join Date
    Mar 2008
    Location
    Ljubljana
    Posts
    41

    Default

    This is the point of my question:

    Is it recomended to adjust target settings to initiator defaults?

    Default iSCSI settings are different between VMWare, Server2008 and DSS7
    (can't find recomended maxoutstandingr2t=? for Win).
    Can you recomend propriate settings on DSS console for WinServer2008R2, for example?

    Is performance better, if all targets&initiators use equally settings?

    Thank you for the answer!
    Toni

  2. #12
    Join Date
    Oct 2006
    Posts
    202

    Default

    I would say adjust the targets to match the initiator settings, open-e's target setting s are standard generic that will work by default, but the other vendors have set their initiators for best performance for there OS. Also remember that on VMware if using round robin to set the IOPS setting to 1 for the volumes.
    Last edited by gharding; 04-01-2014 at 08:57 AM.

  3. #13
    Join Date
    Mar 2008
    Location
    Ljubljana
    Posts
    41

    Default

    DelayBetweenReconnect=5
    EnableNOPOut=0
    ErrorRecoveryLevel=2
    FirstBurstLength=#00010000=65536
    ImmediateData=1
    InitialR2T=0
    IPSecConfigTimeout=#0000003c=60
    LinkDownTime=#0000000f=15
    MaxBurstLength=#00040000=262144
    MaxConnectionRetries=#ffffffff
    MaxPendingRequests=#000000ff=255 - maxoutstandingr2t?
    MaxRecvDataSegmentLength=#00010000=65536
    MaxRequestHoldTime=#0000003c=60
    MaxTransferLength=#00040000=262144 - Maxxmitdatasegment?
    NetworkReadyRetryCount=#0000000a=10
    PortalRetryCount=#00000005=5
    SrbTimeoutDelta=#0000000f=15
    TCPConnectTime=#0000000f=15
    TCPDisconnectTime=#0000000f=15
    WMIRequestTimeout=#0000001e=30


    Can I also tune MPIO round robin IOPS setting in Server2008?

  4. #14
    Join Date
    Oct 2006
    Posts
    202

    Default

    I am not sure about windows server settings

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