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====== LEDs and LED Power Button ======

===== LED states =====

The LED on the front of the LaCie 2big provides indications on the state of its health:

^ LED ^ State ^
| Solid blue | The product is in active mode. |
| Blinking blue | The product is starting up or shutting down. The LED will become solid blue once it has initialized. |
| Blinking blue and red | The product is synchronizing the RAID SAFE. |
| Solid red | RAID SAFE is broken; the device's temperature is too high; or, the product is experiencing a severe error. Contact [[http://www.lacie.com/support|LaCie technical support]] |
| Blinking red | RAID SAFE is degraded. |
| Off | The product is: turned off; not receiving power; in idle mode; experiencing system failure; or, experiencing electronic board failure. See below for information on powering down the hard drives within the enclosure. If the device is connected to a power supply and turned on but the LED remains off, contact [[http://www.lacie.com/support|LaCie  technical support]]. |

==== Hard drive LEDs ====

The hard drive LEDS are located on top of the hard drive drawers.

^ LED Behavior ^ State ^
| Solid blue | The product is in active mode. |
| Blinking blue | The product is starting up; data is being copied to or from the product; data is being accessed. |
| Solid red | Failed hard drive. Contact [[http://www.lacie.com/support|LaCie technical support]] |
| Off | The product is: turned off; not receiving power; in idle mode; experiencing system failure; or, experiencing electronic board failure. See below for information on powering down the hard drives within the enclosure. If the device is connected to a power supply and turned on but the LED remains off, contact [[http://www.lacie.com/support|LaCie technical support]]. |

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==== Receiving power ====

The LaCie 2big powers on automatically when it meets the following two conditions:
  * Connected directly to a computer via the USB port. The computer must be powered on.
  * Connected to a live power source via the included power supply.

<note technical>**Note on the USB 3.0 connection:** The LaCie 2big can be connected to a USB 2.0 port on your computer. To take advantage of SuperSpeed USB 3.0 transfer rates, you must connect the enclosure to a computer with a USB 3.0 port.</note>

===== LED button =====

The LED is also a button to turn the LaCie 2big on or off. Always eject the LaCie 2big’s volumes before turning it off or placing it in idle and power-saving modes.
  * **Long press.** Push the LED for two seconds to power off the enclosure.
  * **Short press.** Push the LED for one second to: power on the device; place the device into idle mode (Thunderbolt 2 only, see below); wake the device from idle mode (Thunderbolt 2 only, see below); or, place the device into power-saving mode (USB 3.0, see below).

The LaCie 2big powers on automatically when it is connected to a computer that is also powered on. However, if you turn the LaCie 2big off using a long press, you must turn the device on manually.

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==== Idle mode (Thunderbolt 2 only) ====

You can use the LED button to enter idle mode:

  - Unmount the volumes (see [[unmounting|]]).
  - Apply a short press to the LED button.

The enclosure will stop sending power to the hard drives. Idle mode allows you to daisy chain Thunderbolt 2 devices and first generation Thunderbolt devices even when the hard drives are not active.

To exit idle mode, apply a short press to the LED button. The hard drives spin up and the volumes should appear on the desktop.

<note technical>**Technical note:** The LaCie 2big must receive power via its power cable to allow for a daisy chain in idle mode.</note>

==== Power-saving mode (USB 3.0) ====

The LaCie 2big will stop sending power to the hard drives when it enters power-saving mode. To spin down the hard drives, apply a short press to the LED button. Perform the same action to exit power-saving mode.