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3-3
Chapter 3: System Interface
! Power: Indicates power is being supplied to the system's power supply
units. This LED should normally be illuminated when the system is operating.
3-4 SCSI Drive Carrier LEDs (6113L-8 only)
Each SCSI drive carrier has two LEDs.
! Green: When illuminated, the green LED on the front of the SCSI drive
carrier indicates drive activity. A connection to the SCSI SCA backplane enables
this LED to blink on and off when that particular drive is being accessed.
! Red: A SAF-TE compliant backplane is needed to activate the red LED to
indicate a drive failure. If one of the SCSI drives fail, you should be notified by
your system management software. Please refer to Chapter 6 for instructions on
replacing failed SCSI drives.