System Modes And Led Indicators - Synology DS1821+ Hardware Installation Manual

System Modes and LED Indicators

System Modes and Definitions
There are 7 system modes in Synology NAS. The System modes and their definitions are as below:
System mode
Powering on
Shutting down
DSM not ready
DSM is ready for use
Hibernation
Application
Powered off
Identify System Modes
You can identify the system mode through the POWER and STATUS LED indicators. Please refer to below table
for more details.
System mode
Powering on
Shutting down
DSM not ready
DSM is ready for use
Hibernation
Application
Powered off
5 Chapter 1: Before You Start
Synology NAS is powering on and performing hardware initialization, such as
hardware reset or BIOS initialization.
Synology NAS is shutting down as a result of pressing the power button or operation
in DSM.
DSM is not ready for use. This could either be:
• Synology NAS is powered on, but DSM is not properly installed.
• Synology NAS is currently powering on and initializing services necessary for
DSM to fully function.
• The attached UPS device has insufficient power; DSM stops all services to
prevent data loss (enters safe mode).
DSM is fully functioning and users can sign in.
Synology NAS has been idle for a while and is now in Hibernation mode.
Certain packages/services (e.g., USB Copy and Find me service) while in operation
will control the actions of the LED. After the operation is complete, the LED indicator
will return to its normal state.
Synology NAS is powered off.
POWER
Blue
Blinking
Blinking
Static
Static
Static
Static
Off
Definition
LED Indicator
STATUS
Green
Off
Static
Blinking
Static
Off
Switching
Off
Orange
Off
Off
Off
Off
Off
Off