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System LEDs

The LaCie 8big Rack Thunderbolt 2 LEDs provide information on the system status. Review the illustrations below for the LED locations on the chassis. See System Overview for further details on each LED.


  1. Thunderbolt host
  2. Thunderbolt daisy chain
  3. Status
  4. Hard drives
  5. Identification
  6. Mute


  1. Identification LED


Inside the front chassis

  1. Fan LEDs
  2. Hard drive LEDs

LED behavior

General LED behavior

The list of colors below will help you identify the general status of your LaCie 8big.

Color State
Solid blue Ready
Slow blinking blue Idle mode
Fast blinking blue Startup and shutdown
Blinking red and blue RAID synchronization
Blinking red Warning
Solid red Error

Status and hard drive LEDs

The status and hard drive LEDs work together to provide up-to-date details on your LaCie 8big’s health.

Status LED Hard drive LEDs State
Fast blinking blue Blinking blue Startup and shutdown
Slow blinking blue Off Hard drives have spun down and the Thunderbolt ports are in idle mode, allowing for daisy chain
Solid blue Solid blue The DAS is ready.
Solid blue Blinking blue for working hard drives The hard drives are being accessed (read/write).
Blinking blue/red Blinking blue/red RAID synchronizing
Blinking red Solid red for non-functional hard drives RAID is degraded. Data remains intact but the array is no longer protected should another hard drive fail.
Blinking red Blinking red on a hard drive Hard drive warning. A hard drive may be experiencing errors or, it is about to fail.
Solid red Solid red for a non-functional or failed hard drive One or more hard drives have failed and the RAID is broken. Data is lost.
Blinking red Blue Temperature alert; a power supply is failing
Solid red Blue Temperature is critical. A critical state is accompanied by an audible alert.
Solid red Solid or blinking blue One or more fans are not spinning.


Thunderbolt 2 ports, identification, and mute LEDs

Thunderbolt 2

Behavior State
Solid blue on the Thunderbolt 2 host LED The Thunderbolt 2 port is connected to a computer.
Solid blue on the Thunderbolt 2 daisy chain LED The LaCie 8big is connected to a daisy chain of Thunderbolt devices and/or displays.


Front Identification LED Behavior Rear Identification LED Behavior State
Blinking amber Blinking amber An identification button has been pushed (front or rear).
Off The identification feature is off.


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.


Hard drive and fan LEDs (inside the front chassis)

Hard drives

Behavior State
Solid blue The hard drives are ready.
Blinking blue The hard drives are being accessed (read/write).
Blinking blue/red RAID synchronizing or firmware update.
Blinking red on a single hard drive Warning that the hard drive may be failing.
Blinking red on multiple hard drives Warning that the RAID may be failing.
Solid red on a single hard drive The hard drive has failed.
Solid red on multiple hard drives The RAID has failed.
Off on hard drive slots within the chassis A hard drive has not been plugged into the slot's SATA connection or it is not receiving power.


Behavior State
Solid blue The fan is working.
Solid red The fan has failed.
© LaCie 2023 Last modified : Dec 17, 2014