Determine if the Drive Backplane Is Faulty

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You must determine if the drive backplane is faulty before you replace it.

Check to see if any System Service Required LEDs are lit or flashing.
See Interpreting Diagnostic LEDs.

In Oracle ILOM, check the health of the storage system.
```
-> show /System/Storage 
 /System/Power
 	Targets:
 		Disks
 		Controllers
 		Volumes
 		Expanders
 	Properties:
 		health = OK
 		health_details = -
...
->
```
If the health_details property identifies a faulty drive backplane, replace it. See Remove the Drive Backplane.

Verify that the drive backplane is faulty.
If the drive backplane is faulty, you will see /SYS/DBP under the Value heading.

For example:
```
-> show faulty
Target              | Property               | Value
--------------------+------------------------+-------------------------------
/SP/faultmgmt/0     | fru                    | /SYS/DBP
...
->
```
If the drive backplane is faulty, replace it. See Remove the Drive Backplane.

If a FRU value different from /SYS/DBP is displayed, see Component Service Task Reference to identify which component is faulty.

Use the Oracle ILOM faultmgmt shell to identify the faulty component.
See Display Faults (faultmgmt Shell).

Check the Fault class and Description fields for more information.

If the drive backplane is faulty, replace it. See Remove the Drive Backplane.

If you are unable to determine if the drive backplane is faulty, seek further information.
See Detecting and Managing Faults.