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Verify SAN host configuration before an ONTAP upgrade

Contributors netapp-aherbin netapp-dbagwell
PDFs

Upgrading ONTAP in a SAN environment changes which paths are direct. Before you upgrade a SAN cluster, you should verify that each host is configured with the correct number of direct and indirect paths, and that each host is connected to the correct LIFs.

Steps

  1. On each host, verify that a sufficient number of direct and indirect paths are configured, and that each path is active.

    Each host must have a path to each node in the cluster.

  2. Verify that each host is connected to a LIF on each node.

    You should record the list of initiators for comparison after the upgrade. If you are running ONTAP 9.11.1 or later, use System Manager to view the connection status as it gives a much clearer display than CLI.

    System Manager

    1. In System Manager, click Hosts > SAN Initiator Groups.

      The page displays a list of initiator groups (igroups). If the list is large, you can view additional pages of the list by clicking the page numbers at the lower right corner of the page.

      The columns display various information about the igroups. Beginning with 9.11.1, the connection status of the igroup is also displayed. Hover over status alerts to view details.

    CLI

    • List iSCSI initiators:

      iscsi initiator show -fields igroup,initiator-name,tpgroup

    • List FC initiators:

      fcp initiator show -fields igroup,wwpn,lif