17
Chapter 4.
LED and Alarm Buzzer Specifications
The LED indicators of the NAS indicate the system status and information. When the NAS is
turned on, check the following items to make sure the system status is normal. Note that
the following LED information is applicable only when users have properly installed the hard
drive, and connected the NAS to the network and the power supply.
LED
Color
LED Status
Description
System
Status
Red/
Green
Flashes green
and red
alternately
every 0.5 sec
1.
The hard 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 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.
5.
An error occurs when accessing
(read/write) the disk data.
6.
A bad sector is detected on the hard
drive.
7.
The NAS is in degraded read-only mode
(2 member 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
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.
A hard disk drive is not formatted.
Green
The NAS is ready.
Deep flashes
of orange
The NAS is in sleep mode.
Off
All the hard drives on the NAS are in standby
mode.
LAN
Orange
Orange
The disk data is being accessed from the
network and a read/write error occurs during
the process.
