Table 20. DDIC LED states
Fault LED (Amber) Status/description*
Off Off (disk module/enclosure)
Off Not present
Blinking: 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 (non-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.
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, replace the DDIC.
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.
● For information about IOM LEDs, see IO Module LEDs.
Initial start-up problems
The following sections describe how to troubleshoot initial start-up problems.
Troubleshooting 2U enclosures
Common problems that may occur with your 2U enclosure system.
The Module Fault LED on the Ops panel lights amber to indicate a fault for the problems listed in the following table:
NOTE: All alarms also report through SES.
Table 21. Troubleshooting 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
Troubleshooting and problem solving 37
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