Control Panel Leds; Power; Hdd; Nic1 - Supermicro SUPERSERVER User Manual

S S
UPER ERVER 7048R-C1RT/7048R-C1R User's Manual
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Control Panel LEDs

The control panel located on the front of the SC745 chassis has six LEDs that
provide you with critical information related to different parts of the system. This
section explains what each LED indicates when illuminated and any corrective ac-
tion you may need to take.

Power

Indicates power is being supplied to the system's power supply. This LED should
normally be on when the system is operating.

HDD

Indicates hard disk drive activity when flashing.
1

NIC1

Indicates network activity on LAN1 when flashing.
2

NIC2

Indicates network activity on LAN2 when flashing.
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Information LED

This LED will be solid blue when the UID function has been activated. When this
LED flashes red, it indicates a fan failure. When red continuously it indicates an
overheat condition, which may be caused by cables obstructing the airflow in the
system or the ambient room temperature being too warm.
Check the routing of the cables and make sure all fans are present and operating
normally. You should also check to make sure that the chassis covers are installed.
Finally, verify that the heatsinks are installed properly (see Chapter 5). This LED
will remain flashing or on as long as the indicated condition exists.

Power Fail

This LED functions only when two power supply modules have been installed in the
system and indicates a power supply module has failed (when illuminated). This
should be accompanied by an audible alarm. A backup power supply module will
take the load and keep the system running but the failed module will need to be
replaced. Refer to Chapter 6 for details on replacing the power supply. This LED
should be off when the system is operating normally.

3-4 Drive Carrier LEDs

•
Green: Each hard drive carrier has a green LED. When illuminated, this green
LED (on the front of the hard drive carrier) indicates drive activity. A connec-
tion to the 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 hard drives.
•
Red: The red LED to indicate a hard drive failure. If one of the hard drives fail,
you should be notified by your system management software. Please refer to
Chapter 6 for instructions on replacing failed hard drives.
Chapter 3: System Interface
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