Meaning of Led Lights and Alarm Buzzer

LED Display & System Status Overview

LED

Colour

LED Status

Description

System Status

Red/Green

Flashes green and red alternately every 0.5 sec

1)	The hard disk drive on the NAS is being formatted.

2)	The NAS is being initialized.

3)	The system firmware is being updated.

4)	RAID rebuilding is in process.

5)	Online RAID capacity expansion is in process.

6)	Online RAID level migration is in process.

Red

1)	The hard disk drive is invalid.

2)	The disk volume has reached its full capacity.

3)	The disk volume is going to be full.

4)	The system fan is out of function (TS-119 does not support smart fan).

5)	An error occurs when accessing (read/write) the disk data.

6)	A bad sector is detected on the hard disk drive.

7)	The NAS is in degraded read-only mode (2 member hard drives fail in a RAID 5 or RAID 6 configuration, the disk data can still be read).

8)	(Hardware self-test error).

Flashes red every 0.5 sec

The NAS is in degraded mode (one member hard drive fails in RAID 1, RAID 5 or RAID 6 configuration).

Flashes green every 0.5 sec

1)	The NAS is starting up.

2)	The NAS is not configured.

3)	The hard disk drive is not formatted.

Green

The NAS is ready.

Off

All the hard disk drives on the NAS are in standby mode.

LAN

Orange

The disk data is being accessed and a read/write error occurs during the process.

Flashes orange

The NAS is connected to the network.

10 GbE*

Green

The 10GbE network expansion card is installed.

Off

No 10GbE network expansion card is installed.

HDD

Red/Green

Flashes red

The NAS is being accessed from the network.

Red

A hard drive read/write error occurs.

Flashes green

The disk data is being accessed.

Green

The hard drive can be accessed.

USB

Blue

Flashes blue every 0.5 sec

1)	A USB device (connected to front USB port) is being detected.

2)	A USB device (connected to front USB port) is being removed from the NAS.

3)	The USB device (connected to the front USB port) is being accessed.

4)	The data is being copied to or from the external USB or eSATA device.

Blue

A front USB device is detected (after the device is mounted).

Off

1)	No USB device is detected.

2)	The NAS has finished copying the data to or from. the USB device connected to the front USB port of the NAS.

eSATA**

Orange

Flashes

The eSATA device is being accessed.

Off

No eSATA device can be detected.

*The 10 GbE network expansion function is only supported by the TS-879 Pro, TS-1079 Pro,

TS-879U-RP, TS-1279U-RP, TS-EC879U-RP, and TS-EC1279U-RP.

**TS-210, TS-212, TS-219, TS-439U-SP/RP, TS-809 Pro, TS-809U-RP do not support eSATA port.

Alarm Buzzer (the alarm buzzer can be disabled in “System Tools” > “Hardware Settings”)

Beep sound

No. of Times

Description

Short beep (0.5 sec)

1)	The NAS is starting up.

2)	The NAS is being shut down (software shutdown).

3)	The user presses the reset button to reset the NAS.

4)	The system firmware has been updated.

Short beep (0.5 sec)

The NAS data cannot be copied to the external storage device from the front USB port.

Short beep (0.5 sec), long beep (1.5 sec)

3, every 5 min

The system fan is out of function (TS-119 does not support smart fan).

Long beep (1.5 sec)

1)	The disk volume is going to be full.

2)	The disk volume has reached its full capacity.

3)	The hard disk drives on the NAS are in degraded mode.

4)	The user starts hard drive rebuilding.

1)	The NAS is turned off by force shutdown (hardware shutdown).

2)	The NAS has been turned on and is ready.

Meaning of Led Lights and Alarm Buzzer

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