Chapter 7 Operation of 5U enclosures 55
LED Type Color State Status
Module fault Amber
On*
Ops panel undergoing 5s test
Rear panel area fault: CM, fan, PSU, when paired with
CM fault LED
Drive module hardware fault, paired with drive module
fault LED
Flashing*
Unknown, invalid, or mixed module type
Vital product data (VPD) configuration error or 1²C bus
failure
Off Rear panel area modulesfunctioning properly
Power on or
standby
Green On IOM power is on
Amber On Part of standby sequence as EM comes online
None Off IOM power is off
Unit
identification
(UID)
White
On
IOM UID active to locate or identify for service activity
Off
IOM UID not active
SAS port
Green
On Connected, link is up
Off Not connected or link is down
Amber
On* Critical SAS cable fault
Fast flash (1s on, 1s off) SAS UID active
Slow flash* (3s on, 1s off) Non-critical SAS cable fault
Off SAS expansion port functioning properly
Ethernet port (Unused)
Figure 46 SAS 12Gb/s expansion input/output module LEDs