In the table below:
•
Steady
means the LED is on continuously.
•
Blinking
means a regular on/off pattern.
Front LED Behavior
LED State Power
Global Enclosure Status
Controller Activity System Heartbeat
Off
System
power off
System power off
No controller
present or system
OFF /
No SAS cables are
connected
System power off
Steady
Green
System
power on
System heathy
One or more SAS
cable is connected
—
Blinking
Green
—
—
Activity
Blink every 4 seconds
if a single controller is
installed.
Blink every 2 seconds
if two controllers are
installed
Amber
—
Fan, power supply, temperature,
or voltage over warning
threshold / Only one power
supply detected
—
—
Red
—
Fan, power supply, temperature,
or voltage over critical threshold —
—
37
12G SAS JBOD
User Guide