Administrator Guide

3. From the first drop-down menu, select Shut Down.
4. Click OK.
5. After the controllers have shut down, shut down the disk enclosures by physically turning off the power supplies.
Next steps
After the outage is complete, see the Owner’s Manual for your controller for instructions on how to start the controllers in the proper
order.
Related tasks
Set Storage Center Cache Options
Restart All Controllers in a Storage Center
If the Storage Center has dual-controllers, the controllers can be restarted in sequence or simultaneously.
Steps
1. If the Storage Manager Client is connected to a Data Collector, select a Storage Center from the Storage view.
2. In the right pane, click Actions→ System→ Shutdown/Restart.
The Shut Down/Restart dialog box opens.
3. From the first drop-down menu, select Restart.
4. (Dual-controllers only) From the Restart options drop-down menu, choose how you want the controllers to restart.
• To restart the controllers one after the other, avoiding an outage, select Restart in Sequence.
• To restart the controllers at the same time, causing an outage, select Restart Simultaneously.
5. Click OK.
Shut Down a Controller
If the Storage Center has dual-controllers, the remaining controller continues to process I/O. If the Storage Center has only one controller,
shutting it down creates an outage.
Steps
1. If the Storage Manager Client is connected to a Data Collector, select a Storage Center from the Storage view.
2. Click the Hardware tab.
3. In the Hardware tab navigation pane, expand Controllers and select the controller.
The Controller view is displayed.
4. In the right pane, click Shut Down/Restart Controller.
The Shut Down/Restart Controller dialog box opens.
5. From the drop-down menu, select Shutdown.
6. Click OK.
Restart a Controller
If the Storage Center has dual-controllers, the remaining controller continues to process I/O. If the Storage Center has only one controller,
restarting it down creates an outage.
Steps
1. If the Storage Manager Client is connected to a Data Collector, select a Storage Center from the Storage view.
2. Click the Hardware tab.
3. In the Hardware tab navigation pane, expand Controllers and select the controller.
The Controller view is displayed.
4. In the right pane, click Shut Down/Restart Controller.
The Shut Down/Restart Controller dialog box opens.
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Storage Center Maintenance