Supermicro AS-1020P-8R, User Manual

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Chapter 3: System Interface
3-3
HDD: Indicates hard drive activity. On the 1020P-T(R)/1020P-8(R) this light
indicates SATA/SCSI and/or CD-ROM drive activity when fl ashing.
Power: Indicates power is being supplied to the system's power supply
module(s). With the 1020P-T/8, this LED should always be green when the system
is operating. On the 1020P-T/8(R), this LED turns amber in the event of a power
supply failure or if a power supply cord is disconnected or loose.
3-4 Drive Carrier LEDs
1020P-T/1020P-TR (SATA Drives)
Each Serial ATA drive carrier has a green LED. When illuminated, this green LED
(on the front of the Serial ATA drive carrier) indicates drive activity. A connec-
tion to the Serial ATA backplane enables this LED to blink on and off when that
particular drive is being accessed.
Note: The second LED on the SATA carriers is not used.
1020P-8/1020P-8R (SCSI Drives)
A 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: A SAF-TE compliant backplane [standard on the 1020P-8(R)] is needed
to activate the red LED, which indicates 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.