Designate the  logical cluster as the failover.
Prerequisites
The logical cluster must be online to designate a   failover cluster.  
 
Task- In the left pane of the Administration Console, expand , then select Logical Cluster. 
 
- Select the logical cluster, click the drop-down arrow that appears next to the name, then select Failover.
 The Confirm Failover screen appears.
 
- Confirm the failover.