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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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MM: Undervoltage (Major, +1.0VDD/+1.2VDD/+1.5VDD/+2.5VDD/+5VDD/+3.3VDD)

MM: Undervoltage (Major, +1.0VDD/+1.2VDD/+1.5VDD/+2.5VDD/+5VDD/+3.3VDD)

Description

Alarm message:

Below lower major threshold

This alarm is generated when the voltage of the idetection point lower than the major alarm lower threshold.

This alarm is generated by the following sensors:

  • +1.0VDD
  • +1.2VDD
  • +1.5VDD
  • +2.5VDD
  • +3.3VDD
  • +5VDD

Attribute

Alarm ID

Alarm Severity

Auto Clear

0x0142FF02

Major

Yes

Impact on the System

The major alarm for low voltage has negative impact on the normal system operating. Some server blades may power off, and services are interrupted.

Possible Causes

  • The power supply of the MM910 is unstable.
  • The MM910 voltage threshold is not properly configured.
  • Some components on the MM910 board are faulty.

Procedure

  1. Check whether the major alarm threshold is set properly.

    • If yes, go to 3.
    • If no, go to 2.
    You can query the sensor alarm threshold using either of the following methods:
    • On the HMM WebUI, choose Alarm Monitoring > MM.
    • On the HMM CLI, run the smmget -t sensor -d lowercritical command.

    The normal major alarm threshold for each sensor is as follows:

    • +5.0V: 4.508V
    • +1.2V: 1.08V
    • +1.5V: 1.35V
    • +2.5V: 2.24V
    • +1.0V: 0.9V
    • +3.3VDD: 2.97V

  2. Change the major alarm threshold. Then check whether the alarm is cleared.

    • If yes, no further action is required.
    • If no, go to 3.
    You can set the sensor alarm threshold using either of the following methods:
    • On the HMM WebUI, choose Alarm Monitoring > MM and click the sensorname.
    • On the HMM CLI, run the smmset -t sensor -d lowercritical -v value command.

  3. Reboot the MM910. Then check whether the alarm is cleared.

    You can restart the MM910 using either of the following methods:
    • On the HMM WebUI, choose System Management > Firmware Upgrade > MM and press the reset button.
    • On the HMM CLI, run the reboot command.
      NOTE:

      During the restart, the system cannot be centrally managed, and services are not affected.

    • If yes, no further action is required.
    • If no, go to 4.

  4. Replace the MM910. Then check whether the alarm is cleared.

    For details about how to replace the MM910, see the E9000 Server User Guide.

    • 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: 192038

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