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OceanStor 9000 V5 7.0 Parts Replacement 05

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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 the Midplane of a Service Disk Module

Replacing the Midplane of a Service Disk Module

This section explains how to replace the midplane of a service disk module in a P12 (the midplane for short).

Impact on the System

You must power off the P12 before replacing a midplane. This interrupts the services running on the P12. Exercise caution when performing this operation.

Prerequisites

The replacement midplane is ready.

Precaution

  • Only qualified technical support engineers are allowed to replace a midplane.
  • Ensure that both power supplies of the P12 have been shut down.
  • To prevent personal injury, arrange two persons to replace it.

Tools and Materials

  • Phillips screwdriver
  • ESD gloves
  • ESD wrist strap
  • ESD bag
  • Labels

Procedure

  1. Wear the ESD wrist strap and ESD gloves. For details, see Put on an ESD wrist strap in Replacing a Main Control Board Enclosure.
  2. Use KVM to log in to the OS as user root (default password is Root@storage), then run poweroff to poweroff the node and wait for the shutdown to complete.

    Wait for the KVM screen to have no output, indicates that the shutdown has been completed.

  3. Label the cable connections between the P12 and power sockets and peripheral devices. Then disconnect the cables.
  4. Remove the P12 from the cabinet and place the P12 on an ESD platform.

    NOTE:
    • When removing the P12, you can first remove disk modules to lighten the P12. For details about how to remove a disk module, see 2 to 5 in Replacing a Service Disk Module.
    • Place the removed disk modules on an ESD-free operating platform in sequence and label them.

    Perform the following operations to remove the P12 from the cabinet:

    1. Loosen the two screws that fix the P12 to the cabinet counterclockwise, as shown in step 1 in Figure 6-16.
    2. Hold the handles on the two sides of the enclosure and pull out the P12 slowly, as shown in step 2 in Figure 6-16.
      NOTE:
      • Ensure that the handles on both sides of the enclosure are intact before you pull out the P12.
      • Arrange two persons to carry the P12.
    Figure 6-16  Removing a P12 from the cabinet

  5. Remove the service disk enclosure.
    1. Remove the main control board enclosure. For details, see 4 in Replacing a Fan Module.
    2. Remove the power modules. For details, see 2 to 3 in Replacing a Power Module.
    3. Remove the service disk modules. For details, see Replacing a Service Disk Module.

      Correctly record the mapping between the disk modules and slots. Ensure that disk modules are inserted into the same slots before and after the removal. Otherwise, services may be affected.

    4. Loosen the 10 screws on both sides of the service disk enclosure counterclockwise, as shown in step 1 in Figure 6-17, and put the removed screws in an ESD bag.
    5. Pull out the service disk enclosure and place it on an ESD platform, as shown in step 2 in Figure 6-17.

      Figure 6-17  Removing a service disk enclosure

  6. Remove the midplane.
    1. Separate the midplane from flexible flat cable (FFC), as shown in step 1 in Figure 6-18.
    2. Remove the 10 screws that fix the midplane, as shown in step 2 in Figure 6-18.
    3. Hold the power connectors on both sides of the midplane and remove the midplane, as shown in step 3 in Figure 6-18.
    4. Put the removed midplane into an ESD bag.

    Figure 6-18  Removing a midplane

  7. Install the midplane.
    1. Take the replacement midplane out of its ESD bag.
    2. Place the midplane on the service disk enclosure along the two positioning rods, as shown in step 1 in Figure 6-19.
    3. Fasten the 10 screws that fix the midplane, as shown in step 2 in Figure 6-19.
    4. Connect the FFC and carefully push it into the connector, as shown in step 3 in Figure 6-19.

    Figure 6-19  Installing a midplane

  8. Install the service disk enclosure.
    1. Gently push the service disk enclosure into the enclosure of the P12 until it clicks into place, as shown in step 1 in Figure 6-20.
    2. Fasten the 10 screws on the service disk enclosure clockwise, as shown in step 2 in Figure 6-20.

      Figure 6-20  Installing a service disk enclosure

  9. Install the main control board enclosure. For details, see 11 in Replacing a Fan Module.
  10. Install the power modules. For details, see 4 in Replacing a Power Module.
  11. Install the disk modules. For details, see Replacing a Service Disk Module.

    Ensure that disk modules are inserted into the same slots before and after the removal. Otherwise, services may be affected.

  12. Install the P12 into the cabinet.

    1. Slide the P12 into the cabinet along the guide rails, as shown in step 1 in Figure 6-21.
    2. Fasten the screws clockwise to fix the P12 into the cabinet as shown in step 2 in Figure 6-21.
    Figure 6-21  Installing a P12 into the cabinet

    NOTE:

    After installing the P12 into the cabinet, insert disk modules into the enclosure. For details about how to install a disk module, see 6 to 9 in Replacing a Service Disk Module.

  13. Correctly connect the P12 to the power sockets and peripheral devices according to the cable connection labels. Then power on the P12.
  14. Check whether the midplane has been replaced successfully. Check whether the system, disk module services, and mounting ears work properly.

Follow-up Procedure

After the midplane is replaced, label the replaced midplane to facilitate subsequent operations.

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Updated: 2019-07-25

Document ID: EDOC1100067965

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