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Maintenance
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System status
Fan status
Temperature status
Power supply status
Network link activity
• Green—The system is running in normal operating condition.
• Amber—The system is in a degraded operational state. For
example:
◦ Power supply redundancy is lost.
◦ On-board current and voltage warning.
◦ Cartridge fault.
◦ At least one drive in a RAID configuration failed.
• Amber, blinking—The system is in a critical fault state. For
example:
◦ Boot failed.
◦ Fatal CPU and/or bus error is detected.
◦ System is in an over-temperature condition.
• Green—All fan modules are operating properly.
• Amber—One or more fan sensors have exceeded a warning
threshold.
• Amber, blinking—One or more fan sensors have exceeded a
critical threshold.
• Green—The system is operating at normal temperature.
• Amber—One or more temperature sensors have exceeded a
warning threshold.
• Amber, blinking—One or more temperature sensors have
exceeded a critical threshold.
• Green—All power supplies are operating properly.
• Amber—One or more power supplies are in a degraded
operational state.
• Amber, blinking—One or more power supplies are in a critical
fault state.
• Off—The Ethernet link is idle
• Green—One or more Ethernet ports are link-active.
• Green, blinking—One or more Ethernet ports are traffic-active.
Cisco UCS M4308 Modular Chassis Installation Guide
Front Panel LEDs
3
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