ProLiant ML570 Generation 4 Server Maintenance and Service Guide

Server component identification 85
HP recommends populating hard drive bays starting with the lowest SAS device number.
SAS and SATA hard drive LEDs
Item Description
1 Fault/ID LED (amber/blue)
2 Online LED (green)
SAS and SATA hard drive LED combinations
Online/activity
LED (green)
Fault/UID LED
(amber/blue)
Interpretation
On, off, or flashing Alternating amber
and blue
The drive has failed, or a predictive failure alert has been
received for this drive; it also has been selected by a
management application.