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Huawei Rack Server iBMC Alarm Handling 27

This document describes iBMC alarms in terms of the meaning, impact on the system, possible causes, and handling suggestions.
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ALM-0x0147FFFF Above Upper Minor Threshold (CPUN MEM Temp)

ALM-0x0147FFFF Above Upper Minor Threshold (CPUN MEM Temp)

Description

Alarm message:

Above upper minor threshold

This alarm is generated when the sensor detects that the temperature of the dual in-line memory module (DIMM) connected to a CPU is higher than the minor alarm upper threshold. This alarm is cleared when the system detects that the temperature falls below the threshold.

Sensor triggering the alarm: CPUN MEM Temp

Attribute

Alarm ID Alarm Severity Auto Clear

0x0147FFFF

Minor

Yes

Parameters

Name Meaning
N

Serial number of the CPU.

Impact on the System

When the DIMM temperature is too high, the DIMM cannot work properly. If the alarm persists, the server powers off or restarts, which interrupts services and causes data loss.

Possible Causes

  • The fan module is faulty.

  • The ambient temperature exceeds the normal range.

  • The air inlet or outlet is blocked.

  • Idle disk bays are not installed with hard disk fillers.

  • Air ducts are not installed properly.

  • The DIMM is faulty.

  • The mainboard is faulty.

Procedure

  1. Check whether a low fan speed alarm is generated for the fan module.

    You can obtain alarm information in either of the following ways:
    • View alarm information on the Current Alarms page of the iBMC WebUI.
    • Run the ipmcget -d healthevents command on the iBMC CLI.
    • If yes, go to 2.

    • If yes, go to 5.

  2. Remove and then reinstall the fan module. After 5 minutes, check whether the fan module alarm is cleared.

    • If yes, go to 4.

    • If no, go to 3.

  3. Replace the fan module. After 5 minutes, check whether the fan module alarm is cleared.

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

    • If yes, go to 4.

    • If no, go to 16.

  4. Check whether the higher temperature alarm for memory is cleared.

    • If yes, no further action is required.

    • If no, go to 5.

  5. Check whether the temperature room temperature exceeds the normal range.

    • If yes, go to 6.

    • If no, go to 7.

  6. Lower the ambient temperature to the normal range. After 5 minutes, check whether the alarm is cleared.

    • If yes, no further action is required.

    • If no, go to 7.

  7. Check whether the air inlet or outlet is blocked.

    • If yes, go to 8.

    • If no, go to 9.

  8. Clear the blockage. Then, check whether the alarm is cleared.

    • If yes, no further action is required.

    • If no, go to 9.

  9. Check whether idle disk bays are not installed with hard disk fillers.

    • If yes, go to 10.

    • If no, go to 11.

  10. Install hard disk fillers in idle disk bays. After 5 minutes, check whether the alarm is cleared.

    • If yes, no further action is required.

    • If no, go to 11.

  11. Check whether air ducts are installed properly.

    • If yes, go to 13.

    • If no, go to 12.

  12. Install air ducts properly. After 5 minutes, check whether the alarm is cleared.

    For details about how to install air ducts, see "Replacing Parts" in the server user guide.

    • If yes, no further action is required.

    • If no, go to 13.

  13. Switch the DIMMs connected to the alarmed CPU to a CPU that is working normall. Then, check whether the alarm is generated for the new CPU.

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

    • If yes, go to 14.

    • If no, go to 15.

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

    • If yes, no further action is required.

    • If no, go to 15.

  15. Replace the mainboard. Then, check whether the alarm is cleared.

    • If yes, no further action is required.

    • If no, go to 16.

  16. Contact Huawei technical support.
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Updated: 2019-02-28

Document ID: EDOC1000054724

Views: 217578

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