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FusionServer Pro Rack Server iBMC Alarm Handling 31

This document describes iBMC alarms in terms of the meaning, impact on the system, possible causes, and handling suggestions.

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ALM-0x070CFFFF Correctable Machine Check Error (CPUN Status)

ALM-0x070CFFFF Correctable Machine Check Error (CPUN Status)


Alarm message:

Correctable Machine Check Error

This alarm is generated when the sensor detects that a self-check exception has occurred in a CPU.

This alarm applies only to the RH5885 V3, RH5885H V3, and RH8100 V3.

Sensor triggering the alarm: CPUN Status


Alarm ID Alarm Severity Auto Clear





Name Meaning


Serial number of the CPU.

Impact on the System

The DIMMs corresponding to the CPU cannot be used. As a result, server performance may deteriorate.

Possible Causes

  • The SMI2 link has failed in memory mirroring mode.
  • An internal error has occurred in Jordan Creek.
  • The number of errors that occur during data transmission between Jordan Creek and the memory controller has reached the alarm threshold.


  1. Check whether there is any alarm generated for the memory board or DIMM corresponding to the CPU.

    • For RH5885 V3, check the DIMMs corresponding the CPU.
    • For RH5885H V3 and RH8100 V3, check the memory boards corresponding the CPU.
    • If yes, go to 2.
    • If no, go to 3.

  2. Replace the memory boardor DIMM. Then, check whether the alarm is cleared.

    • For RH5885 V3, replace the DIMM.
    • For RH5885H V3 and RH8100 V3, replace the memory board.
    • If yes, no further action is required.
    • If no, go to 3.

  3. Replace the mainboard or the system compute module (SCM). Then, check whether the alarm is cleared.

    • For RH5885 V3 and RH5885H V3, replace the mainboard.
    • For RH8100 V3, replace the SCM.
    • If yes, no further action is required.
    • If no, go to 4

  4. Contact Huawei technical support.
Updated: 2019-11-19

Document ID: EDOC1000054724

Views: 394223

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