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3-3
Cisco UCS C220 Server Installation and Service Guide
OL-25760-01
Chapter 3 Maintaining the Server
Status LEDs and Buttons
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 over-temperature condition.
Fan status • Green—All fan modules are operating properly.
• Amber, steady—One fan module has failed.
• Amber, blinking—Critical fault, two or more fan modules have failed.
Temperature status • Green—The server is operating at normal temperature.
• Amber, steady—One or more temperature sensors have exceeded a warning
threshold.
• Amber, blinking—One or more temperature sensors have exceeded a critical
threshold.
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.
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.
Hard drive fault • Off—The hard drive is operating properly.
• Amber—This hard drive has failed.
• Amber, blinking—The device is rebuilding.
Hard drive activity • Off—There is no hard drive in the hard drive sled (no access, no fault).
• Green—The hard drive is ready.
• Green, blinking—The hard drive is reading or writing data.
Table 3-1 Front Panel LEDs, Definitions of States (continued)
LED Name State