Cisco Systems UCS C420 manual Rear-Panel LED States

Chapter 3 Maintaining the Server

Status LEDs and Buttons

Table 3-2	Rear-Panel LED States
LED Name		State
Power supply status		•	Green, steady—The power supply is operating normally and supplying AC power
			to the server.
		• Green, blinking—The power supply is off and in cold-redundancy mode.
Power supply fault		•	Off—The power supply is operating normally.
		• Amber, blinking—An event warning threshold has been reached, but the power
			supply continues to operate.
		• Amber, steady—A critical fault threshold has been reached, causing the power
			supply to shut down.
10/100/1000 Ethernet link speed		•	Off—Link speed is 10 Mbps.
		• Green—Link speed is 100 Mbps.
10/100/1000 Ethernet link status		•	Off—No link is present.
		•	Green—Link is active.
		• Green, blinking—Traffic is present on the active link.
System status		•	Green—The server is running in normal operating condition.
		• Green, blinking—The server is performing system initialization and memory
			check.
		• Amber, steady—The server is in a degraded operational state. For example:
			– Power supply redundancy is lost.
			– CPUs are mismatched.
			– At least one CPU is faulty.
			– At least one DIMM is faulty.
			– At least one drive in a RAID configuration failed.
		• Amber, blinking—The server is in a critical fault state. For example:
			– Boot failed.
			– Fatal CPU and/or bus error is detected.
			– Server is in an over-temperature condition.
10-Gb Ethernet link speed		•	Off—Link speed is 10 Mbps.
		• Green—Link speed is 10 Gbps.
10-Gb Ethernet link status		•	Off—No link is present.
		•	Green—Link is active.
		• Green, blinking—Traffic is present on the active link.
1-Gb Ethernet link speed		•	Off—Link speed is 10 Mbps.
		• Amber—Link speed is 100 Mbps.
		• Green—Link speed is 1 Gbps.

Cisco UCS C420 Server Installation and Service Guide

OL-27640-01 3-5