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Huawei Rack Server iBMC Alarm Handling 28

This document describes iBMC alarms in terms of the meaning, impact on the system, possible causes, and handling suggestions.
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ALM-0x0C01FFFF Uncorrectable Memory Error (DIMMN)

ALM-0x0C01FFFF Uncorrectable Memory Error (DIMMN)

Description

Alarm message:

Uncorrectable memory error, dimm is N

This alarm is generated when an uncorrectable error occurred on a DIMM.

Sensor triggering the alarm: DIMMN

Attribute

Alarm ID Alarm Severity Auto Clear

0x0C01FFFF

Critical

Yes

Parameters

Name Meaning

N

Indicates the silkscreen of a DIMM.

Impact on the System

The DIMM cannot work properly, which affects the server performance.

Possible Causes

  • The DIMM is faulty.

  • The mainboard is faulty.

Procedure

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

    • If yes, no further action is required.

    • If no, go to 2.

  2. Switch the DIMM with a functioning DIMM, and check whether the alarm is still generated for this DIMM.

    • If yes, go to 3.

    • If no, go to 4.

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

    • If yes, no further action is required.

    • If no, go to 4.

  4. Replace the mainboard or memory board. Then, check whether the alarm is cleared.

    • If yes, no further action is required.

    • If no, go to 5.

  5. Contact Huawei technical support.
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Updated: 2019-06-04

Document ID: EDOC1000054724

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