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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-0x0C07FFFF Configuration Error (DIMMN)

ALM-0x0C07FFFF Configuration Error (DIMMN)


Alarm message:

Configuration error, dimm is N

This alarm is generated during startup of the basic input/output system (BIOS) when a DIMM is not installed properly or is faulty.

For details about DIMM layout, see the server user guide or use the Huawei Server Product Memory Configuration Assistant.

Sensor triggering the alarm: DIMMN


Alarm ID Alarm Severity Auto Clear





Name Meaning


Indicates the silkscreen of a DIMM.

Impact on the System

If the alarm is generated for the DIMM in slot 1, the system cannot start. If the alarm is generated for a DIMM in another slot, the system starts properly but the DIMM is unavailable.

Possible Causes

  • The DIMM is not installed in the correct slot.

  • The DIMM is faulty.


  1. Power off the server, and check whether the DIMM is installed in the correct slot.

    For details, see the troubleshooting manual.

    • If yes, go to 2.

    • If no, go to 3.

  2. Remove and reinstall the DIMM, and check whether the alarm is cleared.

    • If yes, no further operation is required.

    • If no, go to 3.

  3. Replace the DIMM. Then, check whether the alarm is cleared.

    For details about how to replace the DIMM, see "Replacing Parts" in the server user guide.

    • If yes, no further operation is required.

    • If no, go to 4.

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

Document ID: EDOC1000054724

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