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Verifying HA status

Before performing a nondisruptive upgrade, you should verify that storage failover is enabled for each HA pair. If the cluster consists of only two nodes, you should also verify that cluster HA is enabled.

About this task

You do not need to verify the HA status if you plan to perform a disruptive upgrade, because this upgrade method does not require storage failover.
  1. Verify that storage failover is enabled and possible for each HA pair: storage failover show

    Example

    This example shows that storage failover is enabled and possible on node0 and node1:

    TDC-DM7K::*> storage failover show
                                  Takeover
    Node           Partner        Possible State Description
    -------------- -------------- -------- -------------------------------------
    TDC-7K-01
                   TDC-DM7K-Rack- true     Connected to TDC-7K-02
                   D-02
                   TDC-DM7K-Rack- true     Connected to TDC-7K-01
                   D-01

    If necessary, you can enable storage failover by using the storage failover modify command.

  2. If the cluster consists of only two nodes (a single HA pair), verify that cluster HA is configured: cluster ha show

    Example

    This example shows that cluster HA is configured:

    TDC-DM7K::> cluster ha show
    High Availability Configured: true

    If necessary, you can enable cluster HA by using the cluster ha modify command.