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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 (Minor, RTC Battary)

MM: Undervoltage (Minor, RTC Battary)

Description

Alarm message:

Below lower minor threshold

This alarm is generated when a sensor detects that the voltage of a real-time clock (RTC) battery is lower than the minor alarm threshold.

You can view the alarm threshold of the MM910 by running the smmget [-l smm] -t sensorname -d lowernoncritical command

This alarm is generated by the following sensor:

RTC Battery

Attribute

Alarm ID

Alarm Severity

Auto Clear

0x0140FF02

Minor

Yes

Impact on the System

The system time of the MM910 is not correct and services related to time are affected.

Possible Causes

  • The MM910 voltage threshold is not properly configured.
  • The RTC battery of the MM910 is aging.

Procedure

  1. Check whether the minor alarm threshold is 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 RTC Battery -d lowernoncritical command.

    The normal RTC Battery minor alarm threshold is 2.790V.

  2. Change the minor 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 RTC Battery -d lowernoncritical -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. Restart 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

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