Switching back aggregates in a two-node MetroCluster configuration

After you have completed the FRU replacement in a two-node MetroCluster configuration, you can perform the MetroCluster switchback operation. This returns the configuration to its normal operating state, with the sync-source storage virtual machines (SVMs) on the formerly impaired site now active and serving data from the local disk pools.

1. Verify that all nodes are in the enabled state: metrocluster node show
   Example

   cluster_B::>  metrocluster node show
   
   DR                           Configuration  DR
   Group Cluster Node           State          Mirroring Mode
   ----- ------- -------------- -------------- --------- --------------------
   1     cluster_A
                 controller_A_1 configured     enabled   heal roots completed
         cluster_B
                 controller_B_1 configured     enabled   waiting for switchback recovery
   2 entries were displayed.
   

2. Verify that resynchronization is complete on all SVMs: metrocluster vserver show
3. Verify that any automatic LIF migrations being performed by the healing operations were completed successfully: metrocluster check lif show
4. Perform the switchback by using the metrocluster switchback command from any node in the surviving cluster.
5. Verify that the switchback operation has completed: metrocluster show
   Example
   The switchback operation is still running when a cluster is in the waiting-for-switchback state:

   cluster_B::> metrocluster show
   Cluster              Configuration State    Mode
   --------------------	------------------- 	---------
    Local: cluster_B configured       	switchover
   Remote: cluster_A configured       	waiting-for-switchback
   

   The switchback operation is complete when the clusters are in the normal state.:

   cluster_B::> metrocluster show
   Cluster              Configuration State    Mode
   --------------------	------------------- 	---------
    Local: cluster_B configured      		normal
   Remote: cluster_A configured      		normal
   
   

   If a switchback is taking a long time to finish, you can check on the status of in-progress baselines by using the metrocluster config-replication resync-status show command.
6. Reestablish any SnapMirror or SnapVault configurations.