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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-0x04000007 Large Fan Speed Difference (Fan, Major Alarm)

ALM-0x04000007 Large Fan Speed Difference (Fan, Major Alarm)

Description

Alarm message:

Fan arg1 [arg2] failure or incorrect fan model (PN: arg3).
NOTE:

From iBMC V328, the RAID controller card and PSU alarms will also include the SN and BOM code, and the fan alarms will also include the BOM code.

This alarm is generated when:

  • A fan module is faulty.
  • The fan model does not match the models of other fans in the server.

Alarm object: fan

Attribute

Alarm ID Alarm Severity Auto Clear

0x04000007

Major

Yes

Parameters

Name Meaning

arg1

Location of the fan module. For example, front or rear.

arg2

No. of the fan module.

arg3

Part number.

Impact on the System

Heat dissipation of the server is affected.

Possible Causes

  • A fan module is faulty.
  • A fan module of incorrect model is used.
  • The fan backplane is faulty.

Procedure

  1. Switch the fan module with a functioning fan module in the same chassis, and check whether the alarm is still generated for this fan module.

    • If yes, go to 2.

    • If no, go to 3.

  2. Replace the fan module. Then, check whether the alarm is cleared.

    • If yes, no further action is required.

    • If no, go to 3.

  3. Replace the fan backplane. Then, check whether the alarm is cleared.

    • If yes, no further action is required.

    • If no, go to 4.

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

Document ID: EDOC1000054724

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