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Why is MPIO Setting in W2k16 with iSCSI ONTAP 9 path verify enabled ( PVE ) set to 0 ?

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data-ontap-dsm-for-windows-mpio
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Applies to

ONTAP DSM

NetApp ONTAP

Microsoft Windows® Server

Answer

  • This is a registry value set and is just one option you can set at the host OS layer effectively probing the target on all paths every 30 seconds. Set  to 0 by Windows Unified Host Utilities 7.1 ( Please check latest documentation for any change in this . 
    1. HKLM\SYSTEM\CurrentControlSet\Services\mpio\Parameters\PathVerifyEnabled

Please consult these technical support resources before making any changes to these parameters as any unsupported configuration by all vendors can cause loss of data access.

  1. The host operating system.
  2. Host bus adapter ( HBA ) vendor and MPIO driver documentation for your initiator.
  3. Storage platform best practice documentation.