Component identification 17
SAS and SATA hard drive LEDs
Item Description Status
1 Fault/UID LED Amber = Drive failure
Flashing amber = Fault-process activity
Blue = Unit identification is active
Off = No fault-process activity
2 Online/activity LED Green = Drive activity
Flashing green = High activity on the
drive or drive is being configured as part
of an array
Off = No drive activity
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.
On, off, or
flashing
Steadily blue The drive is operating normally, and it has been selected by a
management application.
On Amber, flashing
regularly (1 Hz)
A predictive failure alert has been received for this drive.
Replace the drive as soon as possible.
On Off The drive is online, but it is not active currently.
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