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Dell PowerVault ME4 Series Storage System CLI Guide

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restart sc


Description	Restarts the Storage Controller in a controller module. When you restart a Storage Controller, it attempts to shut down with a proper failover sequence, which includes stopping all I/O operations and flushing the write cache to disk, and then the Storage Controller restarts. Restarting a Storage Controller restarts the corresponding Management Controller. CAUTION: Depending on the mapping configuration, restarting one Storage Controller may cause loss of access to data. If you restart both Storage Controllers, all hosts will lose access to the system and its data until the restart is complete. Additionally, both Management Controllers will be restarted and all users’ sessions will need to be restarted. NOTE:When a Storage Controller is restarted, live performance statistics that it recorded will be reset. Historical performance statistics are not affected. In a dual-controller system, disk statistics may be reduced but will not be reset to zero, because disk statistics are summed between the two controllers. For more information, see help for commands that show statistics.
Minimum role	manage
Syntax	restart sc [a\|b\|both] [noprompt]
Parameters	[a\|b\|both] Optional. The controller module containing the controller to restart. If this parameter is omitted, the command affects the controller being accessed. [noprompt] Optional. Suppresses confirmation prompts. Specifying this parameter allows the command to proceed without user interaction .
Output	Messages are displayed when the controller shut down, when failover is initiated, and when the controller has restarted.
Examples	From controller A, restart the Storage Controller in controller B. # restart sc b Restart both Storage Controllers. # restart sc both
See also	restart mc shutdown