Synology DiskStation User Manual page 26

LED Indication Table
LED Indication Color
Green
STATUS
Orange
LAN Green
Green
DISK 1~4
Orange
Power
Getting to know your Synology DiskStation
4-bay DiskStation
Status
Static
Off
Static
Blinking
Static
Blinking
Off
Static
Blinking
Off
Static
Static
Blue Blinking
Off
Description
Volume Normal
Hibernation
Available volume space < 1GB
Volume degraded or crashed
No volume
Network is up
Network is active
Network is down
Disk ready
Disk is being accessed
No internal disk
Cannot Read/ Write
System ready
Booting up
Shutting down
Power off
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