Seagate NAS OS 4 User Manual
Seagate NAS OS 4 

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LED Behavior and Device Buttons

NAS OS manages your device's:

  • Status LEDS
  • Hard drive LEDs
  • Buttons


Rackmount Seagate NAS

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

Seagate NAS and Seagate NAS Pro

Solid white Ready
Blinking white Startup; shutdown; activity
Alternating red and white RAID synchronization; software update
Blinking red Warning or notice
Solid red Error

The status and hard drive LEDs work together to provide up-to-date details on your NAS device's health. For specific information on the meaning of the LED indications, see the user manual for your device:


All Seagate NAS have a power button on the face of the device. Certain models also have identification and mute buttons. Check the user manual for your Seagate NAS to locate the buttons.

NAS OS manages the buttons via push types:

  • Short push: A depression upon the button for one second or less.
  • Long push: A depression upon the button for four seconds or more.

Power button

The power button turns your NAS on when it is powered off. It can also help you power down the NAS without the need to launch NAS OS. Always make certain that no one is accessing the NAS before turning it off.

Power button: short push

A short push is no longer than two seconds. When the product is powered on, a short push of the power button will:

  • Turn the NAS off.
  • Place it into deep sleep mode if the option has been configured in NAS OS. See Power for details on deep sleep mode.

Power button: long push (select models)

A long push is longer than four seconds. Applying a long push will cut the power from the NAS, forcing it to shut down immediately. A long push is not recommended since it can result in data loss. 

Identification buttons: front and rear (select models)

Only use a short push on the identification buttons.

Pushing the identification button will cause the identification LEDs in the front and rear of the device to flash amber and the alarm to sound. The flashing LEDs allows you to identify the NAS among a group of racked devices. There is another identification button on the rear of the device that can also be pushed to turn on the identification LEDs and sound the alarm. Both buttons work in tandem, allowing you to turn the visual and audio identifications on and off. For example, you can use the identification button on the front of the device to turn them on and then turn them off via the rear identification button.

A third identification option is available in NAS OS Monitoring.

Mute button (select models)

An audible alarm will sound when someone pushes an identification button or chooses the option in the NAS OS administration tool. It will also sound if the unit senses a problem with the hardware, such as a faulty power supply unit or elevated temperatures.

Mute button: short push

A short push will turn off an existing audio alarm. When it is pushed, its LED will turn amber, indicating that the alarm has been muted.

Mute button: long push

Apply a long push on the mute button to:

  • Turn off an existing audio alarm off.
  • Prevent the system from sounding an audio alarm.

Following a long push, the mute LED will turn amber, indicating the audible alarm is off. Even if a problem is found in the hardware, the alarm will remain muted. Examples of hardware problems include, but are not limited to, high temperatures, a faulty power supply unit, and fan failure.

The mute button can be pushed if the alarm is not ringing, guaranteeing that it will remain off. To turn the audible alarm back on, apply another long push.