Ddic Led; Iom Leds; Temperature Sensors - Lenovo ThinkSystem DS Series Hardware Installation And Maintenance Manual

DDIC LED

The DDIC supports LFF 3.5" and SFF 2.5" disks as shown in
illustration below shows the top panel of the DDIC as viewed when the disk is aligned for insertion into the drawer
slot. See also Figure 25 (page 33)
Drive Fault LED
(Amber)
Off
Off
Blink: 1s on/1s off
Any links down: On
On
Off
Off
Off
Off
Blinking: 3s on/1s off
Off
Blinking: 3s on/1s off
Off
Off
*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.
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
module LEDs see

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.
102 Troubleshooting and problem solving
and Figure 26 (page
(longitudinal view–top face of carrier)
Status/condition*
Off (disk module/enclosure)
Not present
Identify
Drive link (PHY lane) down
Fault (leftover/failed/locked-out)
Available
Storage system: Initializing
Storage system: Fault-tolerant
Storage system: Degraded (not critical)
Storage system: Degraded (critical)
Storage system: Quarantined
Storage system: Offline (dequarantined)
Storage system: Reconstruction
Processing I/O (whether from host or internal activity)
"12Gb/s expansion module LEDs" (page
Figure 48 (page 56)
33).
DDIC
"Replacing a DDIC" (page
52).
and Figure 49 (page
134).
56). The