User`s guide

22 007-5688-001
3: System Interface
Figure 3-7 Hard Drive Activity LED
Power
The power LED indicates power is being supplied to the system's power supply units is shown in
Figure 3-8. This LED should normally be illuminated when the system is operating.
Figure 3-8 Power On LED
SATA Drive Carrier LEDs
Each SATA drive carrier has two LEDs, as follows:
• Green: When illuminated, the green LED on the SATA drive carrier indicates drive activity.
A connection to the SATA backplane enables this LED to blink on and off when that
particular drive is being accessed. Please refer to Chapter 6 for instructions on replacing
failed drives.
• Red: The red LED indicates a SATA drive failure. If one of the drives fails, you should be
notified by your system management software. Please refer to Chapter 6 for instructions on
replacing failed drives.