Netgear RN3220 – ReadyNAS 3220 2U 12 Bay Diskless Hardware Manual

You can obtain information about the status of your system by reviewing the indicators listed in the following
table.

The Power LED indicates these states:

Green. The system is powered on.

Blinking. The system is powering on or powering off.

Off. Power is not supplied to the system.

Power LED (control panel)

The UI (Unit Identification) LED indicates these states:

Blue. Software or manual identification is on.

Off. Identification is not requested by software or manually when the UI
button is pressed.
Pressing the UI button on either the control panel or the rear panel toggles
the UI LEDs on the control panel and the rear panel. Use this in a situation
such as a densely populated rack when you are working from both the front
and back of the server.

UI LED (control panel)

The Health LED indicates these states:

Red. The system needs attention. Use the local admin page to determine
the problem. For more information, see the ReadyNAS OS 6.5 Software
Manual, which is available at

Off. The system is healthy.

Health LED (control panel)

The LAN LED indicates these states:

Blue. One or more Ethernet ports are linked.

Blinking. One or more Ethernet ports are active.

Off. There is no Ethernet connection.

LAN LED (control panel)

The top LED indicates disk status, as follows:

Green. A disk is present and in use.

Off. No disk is present, or not in use.
The bottom LED indicates disk activity as follows:

Blinking green. The disk is being accessed.

Off. The disk is idling.

Red. The disk was removed, failed, or is resynchronizing.

Disk LEDs (disk trays)