What would you like your Compellent Storage Center to do?
 
 
Select Restart to have both controllers shutdown, then restart. Select the restart method from the options below.
 
Select Shutdown to have both controllers shutdown. This will cause a system outage and the controllers must be restarted manually.
 

Restart options:  
 
When restarting, you can choose to have the controllers restart either in sequence or simultaneously. Restarting simultaneously will cause a momentary system outage.