System LEDs

The 8-bay Rackmount NAS features three sets of LEDs that provide information on the system's status. Review the illustrations below for the LED locations on the chassis.

Front

Status LED
Ethernet LEDs
Disk LEDs
Identification LED
Mute LED

Rear

1. Identification LED and LED button

Interior chassis

1. Disk LEDs

LED behavior

General LED behavior

The list of colors below will help you identify the general status of your NAS:

Color	State
Solid blue	Ready
Blinking blue	Startup; shutdown; activity
Blinking red and blue	RAID synchronization; software update
Blinking red	Warning
Solid red	Error
Solid purple	Updating hardware
Blinking purple	Communication has been lost

Status and disk LEDs

The status and disk LEDs work together to provide up-to-date details on your NAS's health.

Status LED Behavior	Disk LEDs Behavior	State
Blinking blue	Blinking blue for working disks (until they are fully initialized)	Occurs as the device is booting and will cease once the drives are fully initialized.
Solid blue	Blinking blue for working disks	Drives working (read/write)
Blinking blue/red	Blinking blue/red	RAID synchronizing and will cease once the operation is finished.
Blinking blue/red	Blinking blue for working disks	NAS OS update in progress.
Blinking red	Solid red for non-functional disk(s)	RAID is degraded. data remains intact but the array is no longer protected should another disk fail.
	Blinking blue led for all disks	Temperature alert (first level warning)
		Fans are not spinning
		A power supply has been cut but power is provided by the second power supply and/or the ups.
Solid red	Blinking blue for working disks	Temperature alert (critical level). the product will shut off due to the high temperature.
	Blinking blue for working disks	The power supplies are not providing power and, if applicable, the ups has run out of reserve power. the product will shut off.
	Solid red for non-functional disks	RAID has failed and all data has been lost.
	Off on disks	A disk has not been plugged into the slot's SATA connection or it is not receiving power.
Solid purple	Solid blue	Updating hardware
Blinking purple	Solid blue	Communication has been lost. See Hardware Maintenance.

Ethernet, identification, and mute LEDs

Ethernet LEDs

Behavior	State
Solid blue	The Ethernet port is connected to the network.
Blinking blue	Activity on the Ethernet port.
Off	The Ethernet port is not connected to the network.

Identification LED

Behavior	State
Blinking amber	An identification button has been pushed (front, rear, or NAS OS). A corresponding LED on the rear of the NAS will also blink amber to identify the unit in the rack.
Off	The identification feature is off.

Mute LED

Behavior	State
Solid amber	The mute button has been pushed to turn off an audible alert or, to stop the unit from sounding an audible alert.
Off	The mute feature is off.