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Controller fan
indicator lights
Power
Green light indicates power is on.
Normal status: On
Problem status: Off
Power Supply
Amber light indicates a power supply fault.
Normal status: Off
Problem status: On
Fan
Amber light indicates a fan fault.
Normal status: Off
Problem status: On
Controller
Amber light indicates a controller fault.
Normal status: Off
Problem status: On
Fast Write Cache
Green light indicates data in cache.
Figure 30. Controller fan indicator lights — front view
Controller fan
Chapter 3. Starting the controller unit
45
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