User`s manual

Chapter 3: System Interface

3-3

 HDD: Indicates IDE channel activity. On the 1040C-T/1040C-8, this light

indicates SATA/SCSI and/or DVD-ROM drive activity when ﬂ ashing.

 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

SATA Drives (1040C-T)

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.

SCSI Drives (1040C-8)

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.