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E9000 Server V100R001 HMM Alarm Handling 19

This document describes E9000 server alarms in terms of the meaning, impact on the system, possible causes, and solutions.
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PSU: Power Supply Fault (Major, PSN Status)

PSU: Power Supply Fault (Major, PSN Status)


Alarm message:

Power supply failure

This alarm is generated when a sensor detects that the voltage sag or unexpected power failure occurs on a power supply unit (PSU).

This alarm is generated by the following sensors:

PSN Status


Alarm ID

Alarm Severity

Auto Clear








Slot number of the PSU.

Impact on the System

The power cannot be properly supplied to the system, or the chassis powers off, which interrupts services.

Possible Causes

  • The power cable is not properly connected.
  • The ambient temperature is high.
  • The PSU is faulty.
  • The MM910 is faulty.
  • The existing environment does not meet requirements for PSU specifications.
  • The PSU is manually hibernated.


  1. On the HMM WebUI, choose PSUs & Fans > PSU Management> PSU Status and click Status of the faulty PSU. Check whether the alarm cause is displayed.

    • If yes, go to 2.
    • If no, go to 3.

  2. Handle the alarm.

    • If the alarm is caused by a power input fault (including input overvoltage and undervoltage protection), check whether the power cable is properly connected and whether the input voltage is normal.
    • If the alarm is caused by high PSU temperature (including overtemperature and undertemperature protection), check whether the environment temperature is too high.
    • If the alarm cause is that the PSU is disabled, run smmset -l pemN -d pemswitch -v 1 (N indicates the PSU number) on the HMM CLI to enable the PSU.
    • For other causes, replace the PSU.

  3. Check whether the power cable is connected properly and whether the input voltage is normal. Then check whether the alarm is cleared.

    • If yes, go to 5.
    • If no, go to 4.

  4. Reinstall the power cable or adjust the input voltage. Then check whether the alarm is cleared.

    • If yes, no further action is required.
    • If no, go to 5.

  5. On the HMM WebUI, choose System Management > Information Collection, and collect logs.
  6. Contact Huawei technical support.
Updated: 2018-08-16

Document ID: EDOC1000015902

Views: 193385

Downloads: 1567

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