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Component identification 11
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 currently active.
Flashing regularly
(1 Hz)
Amber, flashing
regularly (1 Hz)
Do not remove the drive. Removing a drive may terminate the
current operation and cause data loss.
The drive is part of an array that is undergoing capacity expansion
or a stripe size migration, but a predictive failure alert has been
received for this drive. To minimize the risk of data loss, do not
replace the drive until the expansion or migration is complete.
Flashing regularly
(1 Hz)
Off Do not remove the drive. Removing a drive may terminate the
current operation and cause data loss.
The drive is rebuilding, or it is part of an array that is undergoing
array expansion, logical drive extension, a stripe size migration,
or RAID migration.
Flashing irregularly
Amber, flashing
regularly (1 Hz)
The drive is active, but a predictive failure alert has been received
for this drive. Replace the drive as soon as possible.
Flashing irregularly
Off The drive is active and it is operating normally.
Off
Steadily amber A critical fault condition
has been identified for this drive and the
controller has placed it offline. Replace the drive as soon as
possible.
Off
Amber, flashing
regularly (1 Hz)
A predictive failure alert has been received for this drive. Replace
the drive as soon as possible.
Off
Off The drive is offline, a spare, or not configured as part of an array.