2big NAS User Manual 5
LED BEHAVIOR
The front and rear LEDs indicate drive status and activity. This section describes the behavior of the LED
indicators. Note that even if you have turned off the front LED using the Dashboard, events triggering a red light
will always cause the front LED to turn on.
Front LED
Color
Rear LED Color State
Blinking blue
Activity LED for working disk(s)
(until they are fully initialized)
Occurs as the device is booting; will cease once the
drives are fully initialized
Solid blue
Activity LED for working disk(s)
Drive working (read/write)
Blinking
blue/red
Blinking blue/red
RAID synchronizing; will cease once operation has
concluded
Activity LED for working disk(s)
Operating system update in progress
Blinking red
Activity LED for working disk(s)
RAID is degraded; data is intact but no longer
protected from further failed disks
Solid red for non-functional disk(s)
Activity LED
Temperature alert (first level)
Fan is not spinning
Power supply has been cut but power is still being
supplied through the UPS
Solid red
Activity LED for working disk(s)
Temperature alert (critic level) – the product will shut
off
Power supply has been cut and the UPS has run out of
reserve power – the product will shut off
Solid red for non-functional disk(s)
RAID has failed and data has been lost
Off in disconnected disk(s) Disk(s) is/are disconnected
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