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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.
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 stripe 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.