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Maintenance
2
Drive activity
3
Power supply fault LED
4
Power supply status
LED
5
Unit Identification LED
6
Unit status LED
7
40-Gb QSFP status
LED, port 2 (lower
port)
• Off—There is no hard drive in the hard drive tray (no access, no fault).
• Green—The hard drive is ready.
• Green, blinking—The hard drive is reading or writing data.
• Off—The power supply is operating properly.
• Amber, blinking—An event warning threshold has been reached, but the
power supply continues to operate.
• Amber—A critical fault threshold has been reached, causing the power
supply to shut down.
• Green—The power supply is operating properly and supplying DC power
to the system.
• Green, blinking—The power supply is off and it is in cold redundancy
mode.
• Off—The unit identification LED is not in use.
• Blue, blinking—The unit identification LED is activated.
• Off—There is no AC power to the system.
• Amber—The system is in standby power mode.
• Green—The system is in main power mode. Power is supplied to all
components.
• Off—No link or no QSFP.
• Green—Link established.
• Green + amber, blinking—Green indicates that the link is established and
amber indicates activity on the link.
If amber is off, the established link has no activity or activity is below the
minimum threshold.
Amber blinks at three different rates to indicate the traffic rate (slow,
medium, or fast).
Note
When using 4x10G breakout cables, any one link of the four activates
the LEDs in the manner described. Additional links are not
differentiated.
Cisco UCS M4308 Modular Chassis Installation Guide
Rear Panel LEDs
5
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