SAS and SATA hard drive LEDs
Item
Description
1
Fault/UID LED
2
Online/activity LED
SAS and SATA hard drive LED combinations
Online/activity
LED (green)
On, off, or
flashing
On, off, or
flashing
On
On
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
Fault/UID LED
Interpretation
(amber/blue)
Alternating amber and
The drive has failed, or a predictive failure alert has been
blue
received for this drive; it also has been selected by a
management application.
Steadily blue
The drive is operating normally, and it has been selected by a
management application.
Amber, flashing
A predictive failure alert has been received for this drive.
regularly (1 Hz)
Replace the drive as soon as possible.
Off
The drive is online, but it is not active currently.
Component identification 17