Chapter 3: System Interface

3-3

3-4 SAS Drive Carrier LEDs
Each SAS drive carrier has two LEDs:
Green:• When illuminated, the green LED on the front of the SAS drive carrier
indicates drive activity. A connection to the backplane enables this LED to blink
on and off when that particular drive is being accessed.
Red:• The SES2 compliant backplane activates the red LED to indicate a drive
failure. If one of the SAS drives fail, you should be notifi ed by your system
management software. Please refer to Chapter 6 for instructions on replacing
failed SAS drives.

HDD

Indicates IDE channel activity. On the 2042G-TRF/6RF this light indicates SAS 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.