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Chapter 3: System Interface
3-3
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 Drive Carrier LEDs
1021M-T2: Each Serial ATA drive carrier has two LEDs.
Green: When illuminated, the green LED on the front of the SATA drive car-
rier indicates drive activity. A connection to the SATA backplane enables this LED
to blink on and off when that particular drive is being accessed.
Red: The red LED indicates two states. When blinking, it indicates the drive
is rebuilding. When solid, it indicates a drive failure. If a SATA drive fails, you
should be notifi ed by your system management software. Please refer to Chapter
6 for instructions on replacing failed SATA drives.
1021M-82: Each SCSI drive carrier has two LEDs.
Green: When illuminated, the green LED on the front of the SCSI drive car-
rier 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: The SAF-TE compliant backplane activates the red LED to indicate a
drive failure. If one of the SCSI drives fail, you should be notifi ed by your system
management software. Please refer to Chapter 6 for instructions on replacing failed
SCSI drives.