Sas And Sata Hard Drive Leds - HP ProLiant ML370 Generation 5 User Manual

HP recommends populating hard drive bays starting with the lowest SAS or SATA device number.

SAS and SATA hard drive LEDs

Item Description
1 Fault/UID LED
2 Online/activity LED
Status
Amber = Drive failure
Flashing amber = Fault-process activity
Blue = Unit identification is active
Off = No fault-process activity
Green = Drive activity
Flashing green = High activity on the
drive or drive is being configured as part
of an array
Off = No drive activity
Component identification 16