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User Guide
Power Unit LED
The Power Unit LED lights green when the power unit operates normally.
NOTES:
When an optional power unit is installed, the Disk
Both power units feature an AC inlet and Status LED.
Fan Unit LED
The Fan Unit LED lights green when the fan unit is operating normally.
Dummy Power Unit LED
The Dummy Power Unit LED lights green when all the fans in this unit are operating normally.
SAS Connector LED
The SAS connector LED lights green when the Disk Expansion Unit is linked to the connected
server.
IO Module States LED
The IO Module Status LED lights red during start-up. Within 2 or 3 seconds, it lights green to
indicate that the IO module is ready.
LEDs
Power Unit
Off
Fan Unit
Off
Dummy Power
Off
Unit
SAS Connector
Link Down
LED
IO Module
Off
states LED
"n/a" means this state does not apply to this LED.
* Turns green 2 to 3 seconds after start-up.
Expansion Unit can operate normally if another power
unit is defective (redundant function). The defective
power unit can be hot-swapped with a functional one,
without powering off the system.
Dark
Steady Green
OK
OK
OK
Link up
Ready
State
Amber
Fan too slow
Fan too slow
Fan too slow
n/a
n/a
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Red
Fan or Power
Supply failed
Fan failed
Fan failed
n/a
Starting up*
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