Activity LED (Green)
Fault LED (Amber)
Status/condition*
Blink off with activity
Blinking: 3s on/ 1s off
Storage system: Offline (dequarantined)
Blink off with activity
Off
Storage system: Reconstruction
Blink off with activity
Off
Processing I/O (whether from host or
internal activity)
*If multiple conditions occur simultaneously, the LED state behaves as indicated by the condition listed earliest in the table, as rows are
read from top to bottom.
IOM LEDs
IOM LEDs pertain to controller modules and expansion modules, respectively. Expansion enclosures are supported for optionally adding
storage.
Expansion module LEDs
Expansion IOM status is monitored by the LEDs located on the face plate. See
Figure 17. Expansion module detail ME412/ME424/ME484
.
LED behaviors for expansion enclosures are described in . For actions pertaining to
Table 9. Cache Status LED – power on behavior
14. Expansion module LED states
, see Actions.
Table 14. Expansion module LED states
CRU OK
(Green)
CRU Fault
(Amber)
External host port activity
(Green)
Status
On
Off
Controller module OK
Off
On
Controller module fault – see
Off
No external host port connection
On
HD mini-SAS port connection – no activity
Blinking
HD mini-SAS port connection – activity
Blinking
EBOD VPD error
5U enclosure LEDs
NOTE:
When the 5U84 enclosure is powered on, all LEDs turn on for a short period to ensure they are working. This behavior
does not indicate a fault unless LEDs remain lit after several seconds.
PSU LEDs
See
for a visual description of the Power Supply Unit (PSU) module faceplate.
36
Troubleshooting and problem solving