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Verifying FC path configurations by using the Data ONTAP DSM

When running the Data ONTAP DSM for Windows MPIO, you should verify any FC path configurations that are using Active/Non-optimized paths to the LUNs during routine operations.

About this task

Data ONTAP DSM supports ALUA and the appropriate path will be selected based on the ALUA state for the default load balance policy (Dynamic Least Queue Depth) and other Active/Active load balance policies. The default load balance policy should be used.

Steps

  1. Use the DSM management interface to verify the paths to the LUNs.
    The detailed display for each LUN shows whether the LUN is using an Active/Non-optimized path.

    For more information about using the Data ONTAP DSM interfaces to verify the LUN and path information from a Windows Server, see the Installation and Administration Guide for your version of the Data ONTAP DSM.

  2. Based on the type of policy used, reconfigure the paths to the LUN or verify the fabric connectivity and initiator group assignments for the LUN.
    If the policy used is... Then do this...
    Active/Passive load balance policy Reconfigure the paths to the LUN so that the LUN do not use an Active/Non-optimized path under normal conditions.
    Active/Active load balance policy Verify the proper fabric connectivity and initiator group assignments for the LUN.