Chapter 2
Controls, Ports, and Indicators
Additional Controls and Indicators
16
Switch/Button and Front Control Panel LED Definitions
Additional Controls and Indicators
Storage devices have additional LEDs showing their status.
Hot-Plug Disk Drive Indicators
The hot-swap disk drives have two LEDs per drive, as described below.
• Drive Status LED - The drive status LED is tri-color and may display green, amber, or yellow at any given
time. These colors indicate a normal, warning, or failure condition.
• Drive Activity LED - The drive activity LED is green and indicates disk drive activity. This LED is
controlled by the disk drive directly and turns on when a drive is accessed.
Figure 2-4 Hot-Swap Disk Drive LED Indicators
Table 2-2 Switch/Button LED Definitions
Button/Switch Description
Power Button The power switch turns the HP Server power on or off. If sleep states are
available, it also transitions between power-on and sleep states.
Sleep states are NOS dependent and only available if your NOS supports
power management based on the ACPI (Advanced Configuration and Power
Interface) standard.
NMI Button
(Paper clip may be used to
depress button.)
Press the nonmaskable interrupt (NMI) switch before restarting the system
after a hung condition occurs. NMI provides crash dump capture capability.
Obtain a system hardware status dump to use in root cause analysis and
debugging.
Table 2-3 Hot-Swap Disk Drive LED Definitions
LED Description
Activity LED Flashing green Drive access under hard drive control.
Status LED
Activity LED
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