3-3
Cisco UCS C220 M4 Server Installation and Service Guide
OL-32473-01
Chapter 3 Maintaining the Server
Status LEDs and Buttons
3
Power button/LED
•
Off—There is no AC power to the server.
•
Amber—The server is in standby power mode. Power is supplied only to the Cisco
IMC and some motherboard functions.
•
Green—The server is in main power mode. Power is supplied to all server
components.
4
Unit identification
•
Off—The unit identification function is not in use.
•
Blue—The unit identification function is activated.
5
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.
6
Fan status
•
Green—All fan modules are operating properly.
•
Amber, steady—One or more fan modules breached the critical threshold.
•
Amber, blinking—One or more fan modules breached the non-recoverable
threshold.
7
Temperature status
•
Green—The server is operating at normal temperature.
•
Amber, steady—One or more temperature sensors breached the critical threshold.
•
Amber, blinking—One or more temperature sensors breached the non-recoverable
threshold.
8
Power supply status
•
Green—All power supplies are operating normally.
•
Amber, steady—One or more power supplies are in a degraded operational state.
•
Amber, blinking—One or more power supplies are in a critical fault state.
9
Network link activity
•
Off—The Ethernet link is idle.
•
Green—One or more Ethernet LOM ports are link-active, but there is no activity.
•
Green, blinking—One or more Ethernet LOM ports are link-active, with activity.
Table 3-1
Front Panel LEDs, Definitions of States (continued)
LED Name
State
