Controller Failure
Symptom
Log in to the DeviceManager and choose System > Hardware > Devices.
- For a 2 U controller enclosure, click
on the main page to switch to the rear view of the storage device. On the rear view of the storage device, click the controller in the red square. Health Status of the controller is Faulty.
- For a 4 U controller enclosure, on the front view of the storage device, click the controller in the red square. Health Status of the controller is Faulty.
The controller Alarm indicator on the storage device is steady yellow. Figure 5-1, Figure 5-2, and Figure 5-3 show the location of the controller Alarm indicator.
Alarm Information
On the Alarms and Events page, click the Current Alarms tab. The alarm Controller Is Faulty is displayed on the tab page.
Possible Causes
The controller is faulty.
Impact
Controller faults may deteriorate system performance and reliability.
Fault Diagnosis
Procedure
- Check whether the controller Alarm indicator on the storage device is steady yellow.
- If yes, go to 2.
- If no, keep the fault environment intact and contact technical support engineers.
- Replace the faulty controller.
For details about how to replace a faulty controller, see the Parts Replacement of the corresponding product model.
- Check whether the controller Alarm indicator is steady off and Health Status of the controller on the DeviceManager is Normal.
- If yes, the procedure is complete.
- If no, keep the fault environment intact and contact technical support engineers.
Suggestion and Summary
Failure of one controller causes the storage system performance to deteriorate and increases the risk of data loss. In this case, stop the operations of reading or writing a large amount of data and recover the storage system as soon as possible.