HP Scalable File Share G3 MSA2000fc How To

7 Shutting down and restarting controllers
You can restart processors in a controller module when SMU indicates a changed configuration
setting that requires restarting or when the controller is not working properly. Shut down the
processors in a controller module before you remove it from an enclosure or before you power off
the enclosure for maintenance, repair, or a move. You can perform a restart on either the SC
processor or the MC processor. A shutdown affects both SC and MC processors.
7.1 Restarting
When restarting the SC, a shutdown is attempted with a proper failover sequence including stopping
all I/O operations and flushing the write cache to disk before the controller restarts. The MC is not
restarted because it provides status information to external interfaces. If you restart a MC,
communication with it is lost until it successfully restarts. If the restart fails, the partner MC remains
active with full ownership of operations and configuration information.
CAUTION: If you restart both controller modules at the same time, access to the system and data
is lost until the restart is complete.
7.1.1 Restarting MSA2212fc array controllers
1. Select Manage→Restart System→Shut Down/Restart.
2. In the Restart Controller panel, select a controller option.
3. Click Restart. A confirmation prompt appears.
4. Click OK to confirm the operation, or Cancel to stop it. If you click OK, a message indicates
if the operation succeeded.
7.1.2 Restarting MSA2312fc array controllers
1. In the Configuration View panel, right-click the local system and select Configuration→Shut
Down or Restart Controller.
2. In the main panel, set the following options:
• Select the Restart operation.
• Select the type of controller processor to restart.
• Select whether to restart the processor in controller A, B, or both.
3. Click Restart now. A confirmation dialog appears.
4. Click Yes to continue. Otherwise, click No. If you click Yes, a second confirmation dialog
appears.
5. Click Yes to continue. Otherwise, click No. If you click Yes, a message describes restart
activity.
7.2 Shutting down
Shutting down the SC in a controller module ensures a proper failover sequence, including stopping
all I/O operations and writing to disk any data in write cache. If the SC in both controller modules
is shut down, hosts cannot access the system data. Perform a shutdown before removing a controller
module or powering down the system.
18 Shutting down and restarting controllers