HP Array Controller HSG V8.7 Software - Manual (Page 311)

CLI Commands B–39
CLEAR_ERRORS device-name UNKNOWN
If a device failure causes the controller to label the device as unknown,
the controller does not check the device again to see if it has been
repaired or if the error condition has been corrected. You must enter
this command so the controller can recognize the device after the cause
of the error has been corrected.
Use this command to force the controller to recognize a failed device,
regardless of the controller’s prior evaluation of the device’s condition.
Syntax
CLEAR_ERRORS device-name UNKNOWN
Spell out UNKNOWN when using this command.
Parameters
device-name
Identifies the device with the unknown error.
Example
To force the controller to recognize a previously unknown device
named DISK30000, enter this command:
CLEAR_ERRORS DISK30000 UNKNOWN
See also
CLEAR_ERRORS CLI
CLEAR_ERRORS INVALID_CACHE
CLEAR_ERRORS UNKNOWN
CLEAR_ERRORS UNWRITEABLE_DATA