System Director
25
System Director Front View
The following table describes the control panel shown in the previous figure.
System disk (ID 1)
System disk (ID 0)
ID
ID
Control panel
B
C
A
G
H
D
F
E
HALT RST
System Control Panel
Letter
Component
Description
A
Universal Serial Bus (USB) port USB 2.0 device port on the front of the system supports one USB
device. Recommended for use when re-imaging the system drives or
loading software. Two more USB ports are located on the back of the
system.
B
Halt or Non-maskable interrupt
(NMI) button
The halt or NMI signal halts the processor, which effectively halts
the server. A NMI is the highest priority interrupt and cannot be
masked by software.
c
If the Halt/NMI button is pressed, the NMI signal locks the
system and the system must be restarted to clear the
interrupt.
C
System reset button
Preforms a soft reset when pressed. Do not use this button unless the
system has had a fatal error and you need to restart. A soft reset
restarts the system; it clears all active program memory (you lose
unsaved work) and shuts down all active programs.
D
Four green network activity
LEDs
Illuminates green when a good network connection is established and
blinks when there is network activity on the four built-in 1-GB
network ports.
The number beside the LED corresponds with the number beside the
network port on the rear of the enclosure. For example, Connector 1
is LED 1 on the front. See
“System Director Rear Panel” on page 26
.
E
Red System error LED
Illuminates red when an error is detected with the system (fan, power
supply, temperature, voltage).
