Owners Manual

Table 19. DDIC LED states (continued)
Fault LED (Amber) Status/description*
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.
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 Replacing a DDIC in a 5U enclosure on page 52.
5U84 controller module and IOM LEDs
Controller module and IOM CRUs are common to the 2U and 5U84 enclosures.
● For information about controller module LEDs, see 12 Gb/s controller module LEDs on page 24.
● For information about IOM LEDs, see 2U expansion enclosure IOM LEDs on page 36.
Troubleshooting 2U enclosures
The following sections describe common problems that can occur with your enclosure system, and some possible solutions. For
all of the problems listed in the following table, the Module Fault LED on the Ops panel will light amber to indicate a fault. All
alarms also report using SES.
Table 20. 2U alarm conditions
Status Severity Alarm
PCM alert - loss of DC power from a single PCM Fault – loss of redundancy S1
PCM fan fail Fault – loss of redundancy S1
SBB module detected PCM fault Fault S1
PCM removed Configuration error None
Enclosure configuration error (VPD) Fault – critical S1
Low warning temperature alert Warning S1
High warning temperature alert Warning S1
Over temperature alarm Fault – critical S4
I
2
C bus failure Fault – loss of redundancy S1
Ops panel communication error (I
2
C) Fault – critical S1
RAID error Fault – critical S1
SBB interface module fault Fault – critical S1
SBB interface module removed Warning None
Drive power control fault Warning – no loss of disk
power
S1
Drive power control fault Fault – critical – loss of
disk power
S1
Drive removed Warning None
Troubleshooting and problem solving 39