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User Guide
LED INDICATIONS
The LED indications and their meanings are described below.
If the Disk Expansion Unit does not operate as usual or at all, first check the LED indications.
Power LED
The Power LED lights green when the Disk Expansion Unit is powered on.
NOTES:
Check that the power cord is connected to a power
If the power cord is connected to a power controller,
Status LED
The status LED lights green when the system is operating normally.
The status LED lights amber if a problem is detected.
The status LED lights red if a failure is detected.
The meanings of the status LED indications and the corresponding actions are described below.
IO Module LED
The IO module LED flashes green if the connection is active.
Heartbeat LED
The heartbeat LED blinks green once every 3 seconds if the IO module is installed.
LEDs
Dark
Power
System Off
Status
System Off
IO Module
No Activity
"n/a" means this state does not apply to this LED.
outlet.
such as an uninterruptible power system (UPS), check
that the power controller is ON.
1
Steady
Green
Normal
Normal
n/a
State
Flashing
Amber
Green
n/a
n/a
Fan or Power
n/a
Supply
Problem
Activity
n/a
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Red
n/a
Fan or Power
Supply Failed
n/a
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