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E9000 Server V100R001 HMM Alarm Handling 19

This document describes E9000 server alarms in terms of the meaning, impact on the system, possible causes, and solutions.
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Slot: Undervoltage (Major, CPUN VMCP)

Slot: Undervoltage (Major, CPUN VMCP)

Description

Alarm message:

Voltage below lower major threshold

or

CPU arg1 VMCP voltage (arg2 V) is lower than the undervoltage threshold (arg3V).

This alarm is generated when the VMCP voltage of the CPU is lower than the undervoltage threshold.

This alarm is generated by the following sensors:

CPUN VMCP

Attribute

Alarm ID

Alarm Severity

Auto Clear

0x0142FF02

Major

Yes

Parameters

Name

Meaning

N, arg1

Slot number of the CPU.

arg2

Current reading of the sensor.

arg3

Alarm threshold.

Impact on the System

When devices work with a lower voltage, the component performance deteriorates, the device service life shortens, which causes system breakdown.

Possible Causes

  • The mainboard is faulty
  • The CPU is faulty.

Procedure

  1. Power off the compute node and remove it from the chassis.

    You can power off the compute node using either of the following methods:
    • On the HMM CLI, run the smmset -l bladeN -d powerstate -v poweroff command.
    • On the HMM WebUI, choose PSUs & Fans > PSU Management > Power Control, and click the power control button to power off the compute node.

  2. Switch the CPU with a functioning CPU in the same chassis, and check whether the alarm is still generated for this CPU.

    • If yes, go to 3.
    • If no, go to 4.

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

    • If yes, no further action is required.
    • If no, go to 5.

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

    • If yes, no further action is required.
    • If no, go to 5.

  5. On the HMM WebUI, choose System Management > Information Collection, and collect logs.
  6. Contact Huawei technical support.
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Updated: 2018-08-16

Document ID: EDOC1000015902

Views: 195967

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