Perform a Controller Failover Using the GUI

Before you begin

Failover requires one controller to be in active mode and the other controller to be in standby mode.

Procedure

From the main menu, choose Manage > Arrays .
From the list of arrays, click the array you want to fail over.
In the Array view, note which controller is Active and which is Standby.
Click Make Active on the Standby controller.
In the confirmation dialog box, click Yes.

Results

During the failover operation, the Standby controller first goes into solo mode, and then into active mode. The Active controller goes into unknown mode, then into stale mode, and finally into standby mode.