Chapter 4. Led And Alarm Buzzer Specifications - QNAP TS-431+ User Manual

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
System Red/
Status Green
1
This feature is only available on certain NAS models. Please refer to the product specification table
for details at www.qnap.com.
LED Status
1.
Flashes green 2.
and red 3.
alternately 4.
every 0.5 sec 5.
6.
1.
2.
3.
4.
5.
Red
6.
7.
8.
The NAS is in degraded mode (one member
Flashes red
drive fails in RAID 1, RAID 5 or RAID 6
every 0.5 sec
configuration).
1.
Flashes green
2.
every 0.5 sec
3.
Flashes green
every 2 The NAS is in S3 sleep mode
seconds
Green The NAS is ready.
All the hard disk drives on the NAS are in
Off
standby mode.
28
Description
The hard drive on the NAS is being
formatted.
The NAS is being initialized.
The system firmware is being updated.
RAID rebuilding is in process.
Online RAID Capacity Expansion is in
process.
Online RAID Level Migration is in process.
The hard drive is invalid.
The disk volume has reached its full
capacity.
The disk volume is going to be full.
The system fan is out of function.
An error occurs when accessing
(read/write) the disk data.
A bad sector is detected on the hard
drive.
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).
Hardware self-test error.
The NAS is starting up.
The NAS is not configured.
A hard disk drive is not formatted.
1
.