HP ProLiant ML310 Generation 4 Server Maintenance and Service Guide

Server component identification 66
System LED and
color
Internal health
LED color
Status
Fan (Amber) Red A required fan has failed.
SAS and SATA device numbers
Hot-plug SATA or SAS hard drive LEDs
Item LED description Status
1 Fault/UID status Amber = Drive failure
Flashing amber = Fault-process activity
Blue = Unit identification is active
Off = No fault-process activity