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Parts Replacement

OceanStor 2800 V3 V300R006

This document is applicable to OceanStor 2800 V3. This document describes the procedure for replacing the parts of the storage system in terms of safety operations, preparations, and precautions.
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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
Replacing a Controller (Button Cells Included)

Replacing a Controller (Button Cells Included)

This section describes how to replace a controller. If a button cell is faulty, replace the controller to which the button cell belongs.

Impact on the System

In dual-controller configuration, replacing a controller interrupts all services running on the controller. SmartKit tool is recommended to ensure the controller replacement correctly and reliably.

Prerequisite

  • The replacement controller is ready.
  • The controller that you want to replace has been located.
    NOTE:

    You can locate a component in either of the following ways:

    • Log in to DeviceManager and go to the System page. On the System page, check the device view and locate the position of the component to be replaced. If the component has a location indicator, turn on the indicator. (For details about how to turn on a location indicator, see the online help of DeviceManager.)
    • Use the alarm indicator of the component to locate its position.
  • The cable connection positions of the controller that you want to replace are labeled on the cables.
  • On the controller that you want to replace, all VM services have been stopped and all data has been stored.
  • All VMs on the controller that you want to replace have been powered off.
  • If the storage system in the current version allows SSH port IDs to be configured, the SSH port ID of each controller in the storage system must be 22 by default.
NOTE:

Run show system server_port server_name=SSH to check whether the SSH port ID is 22. If the port ID is not 22, run change system server_port server_name=SSH port_num=22 to change it to 22.

  • If the controller to be replaced is in minisystem state (After login to the CLI of the controller, Storage: minisystem> is displayed), run the showbootmode command to check whether the boot mode of the storage system is normal.
    • If the command output is boot -> boot_osp, the boot mode is normal. Find the fault reason and rectify the fault before replacing the controller.
    • If the command output is boot -> boot_rescue, the boot mode is abnormal. Run the resumebootmode command to restore the boot mode to normal before replacing the controller.

Precaution

  • Remove and insert a controller with even force. Excessive force may damage the appearance or connectors of the controller.
  • A controller must be replaced within five minutes. Otherwise, the system heat dissipation is compromised.
  • Remove only one controller at a time.
  • If a single controller fails, use the SmartKit to replace it when the other controller is working properly. If the entire controller enclosure has been powered off, power on the functioning controller before replacing the faulty one.
  • If both controllers of a controller enclosure fail, contact Huawei technical support engineers for assistance.
  • If the FRU tool fails to identify a controller fault, skip 1, go to 2 to 10.

Tools and Materials

  • ESD wrist strap
  • ESD bag
  • Labels

Procedure

  1. Check status before replacement.

    1. Check system status.

      Start SmartKit and choose Home > Storage > Routine Maintenance > Health Check. On the Health Check page, perform inspection as instructed. For details, see Checking System Status.

      NOTE:

      If any items fail the inspection, rectify the faults by performing the recommended actions in the inspection reports. Ensure that all other parts except the parts to be replaced are working properly.

    2. Check the status of the parts to be replaced.

      Start SmartKit and choose Home > Storage > Parts Replacement > Parts Replacement. On the Parts Replacement page, click FRU Replacement. Then complete the check before the replacement as prompted. For details, see Replacing an FRU.

    You can proceed to next steps only when all items pass the pre-replacement check and the replacement page is displayed. If any item fails, rectify the fault as prompted.

  2. Wear an ESD wrist strap.
  3. Remove the two interface modules from the controller to be replaced.

    1. Check the status of the Power indicator/Hot Swap button on the interface module to determine whether the interface module has been successfully powered off, as shown in Figure 6-14.
      • If the indicator is off, the interface module has been successfully powered off, skip to 3.b.
      • If the indicator is on, use a paper clip or a similar object to press the Power indicator/Hot swap button on the interface module to power off the interface module.
      Figure 6-14 Power indicator/Hot Swap button on an interface module

    2. Remove the cables from the interface module.
    3. Press the latch on the interface module to release the handle and pull out the interface module, as shown in Figure 6-15.
      Figure 6-15 Removing an interface module

    4. Put the removed interface module into an ESD bag.

  4. Press latches on the controller to release the handles and pull out the controller, as shown in Figure 6-16.

    Figure 6-16 Removing a controller

  5. Place the removed controller into an ESD bag.
  6. Take the replacement controller out of its ESD bag.
  7. Open handles on the replacement controller, insert the controller, and close the handles, as shown in Figure 6-17.

    Figure 6-17 Installing a controller

  8. Insert the removed interface modules to the empty slots until they click into place, as shown in Figure 6-18.

    Figure 6-18 Installing an interface module

  9. Connect the cables.
  10. Wait about five minutes and check the status of the Power indicator on the controller to determine whether the controller has been powered on, as shown in Figure 6-19.

    • If the Power indicator is steady green, the controller has been powered on.
    • If the Power indicator is blinking green and the Alarm indicator is blinking red, the controller is being located.
    • If the Power indicator is blinking green (0.5 Hz), the controller is powered on and in the BIOS boot process.
    • If the Power indicator is blinking green (2 Hz), the controller is in the operating system boot process or power-off process.
    • If the Power indicator is off, the controller is absent or powered off.
    Figure 6-19 Power/Alarm indicators on a controller

    1

    Alarm indicator of the controller

    2

    Power indicator of the controller

  11. Confirm the replacement.

    1. Perform a post-replacement inspection.
      1. If the FRU tool can identify the faulty controller before the replacement:

        After the parts replacement, return to the SmartKit page and click Replaced. Then complete the parts check after the replacement as prompted.

      2. If the FRU tool fails to identify the faulty controller before the replacement:

        Check the status of the controller Alarm indicator to determine whether the controller is working properly. Figure 6-19 shows the location of the indicators.

        • If the Alarm indicator is steady red, an alarm is generated on the controller.
        • If the Alarm indicator is blinking red and the Power indicator is blinking green, the controller is being located.
        • If the Alarm indicator is off, the controller is working properly.

      If the version of the newly installed controller is inconsistent with that of the faulty controller, the controller will synchronize the version after the replacement. This process takes about 30 minutes and the maximum duration is 60 minutes. If the duration exceeds 60 minutes, contact Huawei technical support. During the synchronization, do not remove the controller or power off the storage system.

    1. Check system status.

      On the Parts Replacement page, click Inspection to check the system status again. If any item fails inspection, rectify the fault based on the suggestions in the inspection report.

    2. After the preceding procedure is complete, check services on the host for storage-related errors.

Follow-up Procedure

After a controller is replaced, label it to facilitate subsequent operations.

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Updated: 2019-08-30

Document ID: EDOC1000138807

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