Chapter 1
Overview
Controls, Ports, and LEDs
26
Figure 1-6 shows the control panel LEDs and buttons.
Figure 1-6
Control Panel LEDs and Buttons
Table 1-2 lists the control panel LED status and descriptions.
Table 1-2
Control Panel LED Definitions
LED or
Button
State
Flash Rate
Color
Description
System LED
Running
Steady
Green
System normal, OS up and running.
System LED
Booting
Flashing at 0.5 Hz
Green
OS booting or at BCH.
System LED
Attention
Flashing at 1 Hz
Yellow
Warning-system needs attention.
Redundancy lost, component failure pending.
System LED
Fault
Flashing at 2 Hz
Red
Hard fault. system halted.
System LED
Off
Off
N/A
System off.
Power LED
On
Steady
Green
Power normal.
Power LED
On
Flashing at 1 Hz
Yellow
Housekeeping voltage present.
Power LED
Off
Off
Off
Power off.
Disk LED
Flashing at rate of
disk activity
Green
Disk activity.
Thermal
LED
OK
Steady
Green
Thermal OK.
Thermal
LED
Warning
Flashing at 1 Hz
Yellow
Thermal warning.
Locator
Button or
LED
Flashing at 1 Hz
Blue
System locator LED can be remotely or
locally activated or deactivated. There is also
a locator button on the rear panel of the
server. Pressing either button turns both
LEDs on or off and enables or disables the
locator function.
Power Button
Disk LED
System LED
Thermal LED
Locator
Button/LED
Power LED
TOC/NMI Button