Other LED Indicators
LED Indicator
DRIVE status Indicator
(on tray)
ALERT
Rear 1GbE LAN
(on upper side of jack)
Rear 1GbE LAN
(on lower side of jack)
Note:
1 Please try to restart your Synology NAS or re-insert the drives, then run the HDD/SSD manufacturer's
diagnostic tool to check the health status of the drives. If you can sign in to DSM, please run the built-in
S.M.A.R.T. test to scan the drives. If the problem remains unresolved, please contact Synology Technical
Support for help.
2 If the ALERT LED continuously blinks red, this indicates there are system errors such as fan failure, system
overheating, or volume degrade. Please sign in to DSM for detailed information.
7 Chapter 1: Before You Start
Color
Status
Static
Green
Blinking
Orange
Static
Off
Red
Blinking
Off
Green
Static
Orange
Off
Static
Green
Blinking
Off
Description
Drive ready and idle
Accessing drive
1
Drive error/Port disabled
No internal Drive
2
System error
System normal
1 Gbps connected
100 Mbps connected
10 Mbps connected/No network
Network connected
Network active
No network