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Chassis Description 11
Table 4. Front Panel Features
Item Feature Description
Front Panel Switches
C NMI switch A momentary contact switch used to instruct the processor to copy system
memory to the hard drive. Pressing the recessed button with a paper clip or pin
puts the server in a halt state for diagnostic purposes and allows you to issue a
non•maskable interrupt. After issuing the interrupt, a memory dump can be
performed to determine the cause of the problem.
D Power switch Toggles the system power on/off.
E Reset switch Reboots and initializes the system.
Front Panel Alarm LEDs and Relays
F Critical (amber) When continuously lit, indicates the presence of a Critical System Fault. A
critical system fault is an error or event that is detected by the system with a
fatal impact to the system. In this case, the system cannot continue to operate.
An example could be the loss of a large section of memory or other corruption
that renders the system not operational. Additionally, the front panel critical
alarm relay will engage.
G Major (amber) When continuously lit, indicates the presence of a Major System Fault. A major
system fault is an error or event that is detected by the system that has
discernable impact to system operation. In this case, the system can continue
to operate but in a “degraded” fashion (reduced performance or loss of
non-fatal feature reduction). An example could be the loss of one of two
mirrored disks. Additionally, the front panel major alarm relay will engage.
H Minor (amber) When continuously lit, indicates the presence of a Minor System Fault. A minor
system fault is an error or event that is detected by the system but has little
impact to actual system operation. An example would be a correctable
ECC error. Additionally, the front panel minor alarm relay will engage.
I Power (amber) When continuously lit, indicates the presence of a Power System Fault.
Additionally, the front panel power alarm relay will engage.
Front Panel Status LEDs
J NIC activity LED
(green)
Indicates NIC activity.
K HDD activity
LED (green)
Indicates any system SCSI hard drive activity.
L Main power
LED (green)
When continuously lit, indicates the presence of DC power in the server. The
LED goes out when the power is turned off or the power source is disrupted.
When it is blinking green, it indicates that the system is in ACPI sleep mode.