Table 12. Drive carrier LED states (continued)
Activity LED (Green) Fault LED (Amber) Status/condition*
Blink off with activity Off Available
Blink off with activity Off Storage system: Initializing
Blink off with activity Off Storage system: Fault-tolerant
Blink off with activity Off Storage system: Degraded (not critical)
Blink off with activity Blinking: 3s on/ 1s off Storage system: Degraded (critical)
On Off Storage system: Quarantined
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.
IO Module LEDs
IOM status is monitored by the LEDs located on the face plate. The following table describes LED behaviors for expansion
enclosure IOMs.
Table 13. Expansion enclosure IOM LEDs
LED Description Color Status
Module fault Amber On
● Ops panel undergoing 5s test
● Rear panel area module fault: IOM, fan, PSU, when paired with
module fault LED
● Drive module hardware fault, paired with drive fault LED
Flashing
● Unknown, invalid, or mixed module type, such as drive module or
PSU
● Vital product data (VPD) configuration error or I2C bus failure
Off—IOM functioning properly
Power on or
standby
Green On—IOM power is on
Amber On—Part of standby sequence as IOM comes online
None Off—IOM power is off
Unit
identification
(UID)
White On—UID active to locate or identify for service activity
Off—UID not active
12 Gb/s SAS
port
Green On—Connected, link is up
Off—Not connected or link is down
Amber On—Critical SAS cable fault
Fast flash (1s:1s)—SAS UID active
Slow flash (3s:1s)—Non-critical SAS cable fault
Off—SAS expansion port functioning properly
Ethernet port --- Ethernet port is disabled
Troubleshooting and problem solving 31
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