On the CLI, run show disk_domain general disk_domain_id=0 and check whether Running Status of the disk domain is Offline.
NOTE:
For example, in the preceding figure, Health
Status of disk domain 0 is Fault, and Running Status is Offline.
If yes, go to step 6.
If no, go to step 2.
Check whether an alarm is displayed indicating that a disk
is removed from the disk domain (ID: 0x100F00A0010).
For details about how to view an alarm on the DeviceManager,
see Checking System Alarms.
If yes, reinsert the removed disk and go to step 3.
If no, go to step 4.
Perform the check again to observe whether the check item
fails.
If yes, go to step 4.
If no, no further action is required.
Check whether Health Status of the disk
domain is Fault.
If yes, go to step 6.
If no, go to step 5.
Check whether an alarm is displayed indicating that a disk
in the disk domain where the storage pool resides is abnormal (fault
alarm ID: 0xF00A0001, imminent-fault alarm ID: 0xF00A0003, slow-disk
alarm ID: 0xF00A000D or 0xF000A005F).
If yes, use the FRU tool to replace the faulty disk.
If no, go to step 6.
Collect related information and contact technical support
engineers.