Shutting Down a Clustered Configuration (BUI)

Use this procedure to shut down a clustered configuration. A cluster that has been shut down can be restored to the same cluster configuration as before the shutdown by powering on both controllers.

From one of the peer controllers: From the Configuration menu, select Cluster.

Determine the cluster state of each controller.

In the following figure, the active controller is controller-a, and the standby controller is controller-b.

Figure that shows the state of each controller in a cluster.

The following table describes the valid pairs of controller states (active and standby controllers) that you could see.

controller-a	controller-b	Condition
Active	Active	Both controllers are running in a normal clustered condition.
Active (takeover completed)	Ready (waiting for failback)	`controller-a` owns all of the resources and is the active controller. `controller-b` is in standby mode and has no resources. To limit the number of times a pool is moved, shut down the standby controller first.
Active (takeover completed)	Rejoining cluster ...	`controller-b` is rebooting and `controller-a` has all resources.
Active (takeover completed)	Unknown (disconnected or restarting)	`controller-b` is powered off or rebooting, or all of its cluster interconnect links are down.

Log in to the BUI of controller-b, and click the power icon on the left side, under the masthead.

Note:
To limit the number of times a pool is moved, shut down the standby controller first.
From the BUI of controller-a's Configuration menu, select Cluster to confirm that controller-b is powered off, with the cluster state: Unknown (disconnected or restarting).
From the BUI of controller-a, click the power icon on the left side, under the masthead.
Optional: Use Oracle ILOM to confirm that both controllers are powered off.
Enter the following command in the Oracle ILOM:
```
->show /SYS power_state
```
For information about accessing Oracle ILOM, see Logging in to Oracle ILOM Remotely Using a Command Line Interface in Oracle ZFS Storage Appliance Customer Service Manual, Release OS8.8.x.
Power off the disk shelves.
1. Place the power supply on/off switches to the "O" off position.
2. Disconnect the power cords from the external power source for the cabinet.
  
  Note:
  All power cords must be disconnected to completely remove power from the disk shelf.
  
  For more information, see Powering Off a Disk Shelf in Oracle ZFS Storage Appliance Installation Guide, Release OS8.8.x.