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Chapter 1: Introduction
Control Panel Features (per Node)
Feature
Description
Power button
The main power button is used to apply or remove power from the power supply to the server.
Turning off system power with this button removes the main power but maintains standby
power. To perform many maintenance tasks, you must also unplug system before servicing.
NIC LED
Indicates network activity on LAN port when flashing.
Information LED Alerts operator to several states, as noted in the table below.
UID Button/LED
The Unit ID (UID) button is used to turn on or off the blue UID LED to easily locate the server
in racks and server banks. Solid blue indicates the UID has been activated locally to locate
the server in a rack environment. Blinking blue indicates the UID has been activated using
BMC to locate the server in a rack environment.
Information LED
Status
Description
Continuously on and
red
1. An overheat condition has occurred.
2. An HDD(s) status has changed. (For details,
section).
Blinking red (1Hz)
Fan failure, check for an inoperative fan.
Blinking red (0.25Hz)
Power failure, check for a non-operational power
supply.
Control Panel
Figure 1-2. Control Panel (per Node)
Power
Information LED
UID Button
NIC LED
