Administrator Guide

Shutting Down and Restarting a Storage Center
Shutting down or restarting a Storage Center affects all controllers.
Shut Down All Controllers in Storage Center
Shutting down a Storage Center creates a system outage, during which time no I/O is processed. Use this process only as directed, for
example to replace hardware, to move the Storage Center to another location, or to shut down for data center power maintenance.
Prerequisites
• An outage must be scheduled so that halting I/O does not impact your network.
• I/O to the controllers must be halted.
Steps
1. If you are connected to a Data Collector, select a Storage Center from the drop-down list in the left navigation pane of Unisphere
Central.
2. Click
Summary.
The Summary view is displayed.
3. Click
(More Actions) and select Shutdown/Restart.
The Shutdown/Restart dialog box opens.
4. From the first drop-down menu, select Shutdown.
5. Click OK.
6. 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.
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 you are connected to a Data Collector, select a Storage Center from the drop-down list in the left navigation pane of Unisphere
Central.
2. Click
Summary.
The Summary view is displayed.
3. Click
(More Actions) and select Shuitdown/Restart.
The Shutdown/Restart dialog box opens.
4. From the first drop-down menu, select Restart.
5. (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.
6. 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. From the
SYSTEM menu, click Hardware.
Storage Center Maintenance
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