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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 (HDDBkpN Temp)

ALM-0x0147FFFF Above Upper Minor Threshold (HDDBkpN Temp)

Description

Alarm message:

Above upper minor threshold

This alarm is generated when the temperature sensor detects that the temperature of the hard disk backplane is higher than the minor alarm upper threshold. This alarm is cleared when the system detects that the temperature is restored to the acceptable range.

This alarm applies only to the RH8100 V3 only.

Sensor triggering the alarm:

  • HDDBkp Temp
  • HDDBkpN Temp

Attribute

Alarm ID Alarm Severity Auto Clear
0x0147FFFF Minor Yes

Parameters

Name Meaning
N indicates the number of a temperature monitoring point for the hard disk backplane. The value of N can be 0, 2, or 9.

Impact on the System

The hard disk backplane and components on the mainboard cannot operate stably, which shortens the service life of the server and increases power consumption. 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.

  • Air ducts are not installed properly.

  • The disk backplane is faulty.

Procedure

  1. Log in to the iBMC WebUI or CLI.

    For details, see the iBMC user guide of the server.

  2. 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 3.

    • If no, go to 6.

  3. Remove and then install the fan module. 5 minutes later, check whether the fan module alarm is cleared.

    • If yes, go to 5.

    • If no, go to 4.

  4. Replace the fan module. 5 minutes later, check whether the fan module alarm is cleared.

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

    • If yes, go to 5.

    • If no, go to 4.

  5. Check whether the disk backplane overheating alarm is cleared.

    • If yes, no further action is required.

    • If no, go to 6.

  6. Check whether the ambient temperature is extremely high.

    • If yes, go to 7.

    • If no, go to 8.

  7. Lower the ambient temperature to the normal range. Five minutes later, check whether the alarm is cleared.

    • If yes, no further action is required.

    • If no, go to 8.

  8. Check whether the air intake vent or air exhaust vent is blocked.

    • If yes, go to 9.

    • If no, go to 10.

  9. Remove barriers. Then check whether the alarm is cleared.

    • If yes, no further action is required.

    • If no, go to 10.

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

    • If yes, go to 11.

    • If no, go to 12.

  11. Install hard disk fillers in idle disk bays. Five minutes later, check whether the alarm is cleared.

    • If yes, no further action is required.

    • If no, go to 12.

  12. Check whether air ducts are installed properly.

    • If yes, go to 14.

    • If no, go to 13.

  13. Install air ducts properly. Five minutes later, check whether the alarm is cleared.

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

    • If yes, no further action is required.

    • If no, go to 14.

  14. Replace the disk backplane, then check whether the alarm is cleared.

    For details about the location of the disk backplane, see server user guide.

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

    • If yes, no further action is required.

    • If no, go to 15.

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

Document ID: EDOC1000054724

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