User`s manual

Chapter 3: System Interface
3-3
3-4 Drive Carrier LEDs
Each drive carrier has two LEDs.
Blue: When illuminated, this blue LED (on the front of the drive carrier) indicates
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drive activity. A connection to the backplane enables this LED to blink on and
off when that particular drive is being accessed.
Red: The red LED indicates a drive failure. If one of the drives fail, you should
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be notifi ed by your system management software.