User Guide

2 - Xserve RAID Troubleshooting
Diagnostic Tools
Table 1: Front Panel Status Lights
Indicator LED Color Description
Security lock Yellow Lock is engaged
System identifier Yellow Indicates a hardware error or that
someone has toggled it on; check the
server monitoring application for more
information
Mute button No LED Press to turn off the alarm signalling an
error condition
Power supplies Green
Red
OK
Failure (See “Power Supply Status Lights”)
Cooling modules Green
Red
OK
Failure
Temperature Green
Red
OK
Over temperature
RAID controller
(one for each group
of seven drives)
Green
Red
OK
Failure
Host activity Blue Two rows of 23 LEDs show level of fibre
channel activity on each host channel
Fibre channel link Green Two LEDs indicate a link is established
Drive module
(right LED)
Green
Yellow
Yellow/green flash
Red
Powered and running; good
Prefailure condition; replace drive
Rebuilding RAID
Problem or failure; replace drive
Drive module
(left LED)
Blinking blue
No light
Disk activity; do not remove drive
No disk activity; drive can be removed