102 Troubleshooting and problem solving
DDIC LED
The DDIC supports LFF 3.5" and SFF 2.5" disks as shown in
. The
illustration below shows the top panel of the DDIC as viewed when the disk is aligned for insertion into the drawer
Figure 76 LEDs: DDIC – 5U enclosure disk slot in drawer
Each DDIC has a single Drive Fault LED. A disk drive fault is indicated if the Drive Fault LED is lit amber. In the
event of a disk failure, follow the procedure in
.
IOM LEDs
NOTE:
The expansion module CRU is common to 2U and 5U enclosures. For information about expansion
“12Gb/s expansion module LEDs” (page 52)
.
Temperature sensors
Temperature sensors throughout the enclosure and its components monitor the thermal health of the storage system.
Exceeding the limits of critical values will cause a notification to occur.
Drive Fault LED
(Amber)
Status/condition
*
Off
Off (disk module/enclosure)
Off
Not present
Blink: 1s on/1s off
Identify
Any links down: On
Drive link (PHY lane) down
On
Fault (leftover/failed/locked-out)
Off
Available
Off
Storage system: Initializing
Off
Storage system: Fault-tolerant
Off
Storage system: Degraded (not critical)
Blinking: 3s on/1s off
Storage system: Degraded (critical)
Off
Storage system: Quarantined
Blinking: 3s on/1s off
Storage system: Offline (dequarantined)
Off
Storage system: Reconstruction
Off
Processing I/O (whether from host or internal activity)
*If multiple conditions occur simultaneously, the LED state will behave as indicated by the condition listed earliest in the
table, as rows are read from top to bottom.
DDIC
(longitudinal view–top face of carrier)