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OceanStor 9000 V100R001C01 Parts Replacement 12

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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 Rear Service Disk Midplane

Replacing a Rear Service Disk Midplane

This section describes how to replace the rear service disk midplane (referred to as the rear midplane) of the Capacity node.

Impact on the System

Before you replace the rear midplane, you need to power off the Capacity node. Therefore, the ongoing services on the Capacity node will be interrupted.

Prerequisites

The spare rear midplane is ready.

Precaution

  • Only professional maintenance personnel are allowed to replace a midplane.
  • The Capacity node has two power supplies. Ensure that both supplies are disconnected.
  • 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 or gloves. For details, see Wearing an ESD Wrist Strap in Replacing a Main Control Board Enclosure.
  2. Take out the disk enclosure.
    1. 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.

    2. Label the cables on the Capacity node and disconnect it from the power socket and other devices.
    3. Move the Capacity node out of the cabinet to an ESD workbench. For details, see 4 in Replacing a Fan Module in the Main Control Board Enclosure.
    4. Take out the main control board enclosure. For details, see 4 in Replacing a Fan Module in the Main Control Board Enclosure.
    5. Take out the two power modules. For details, see 2 in Replacing a Power Module.
    6. Remove the disk modules. For details, see 2 to 5 in Replacing a Service Disk Module.
    7. As shown in step 1 in Figure 4-27, loosen the 14 screws on the disk enclosure counterclockwise and put the removed screws in an ESD bag.
    8. As shown in step 2 in Figure 4-27, pull out the disk enclosure and put it on the workbench.

      Figure 4-27  Removing the service disk enclosure from the cabinet

  3. Remove the top cover of the chassis, and uninstall the fan module in the chassis.
    1. Remove the top cover of the chassis. For details, see 6 in Replacing a Fan Module in the Chassis.
    2. As shown in step 1 in Figure 4-28, loosen the four screws on each side of the chassis.
    3. Uninstall the fan module in the chassis. For details, see 7 in Replacing a Fan Module in the Chassis.
    4. As shown in step 2 in Figure 4-28, loosen the three screws fastening the rear midplane.

    Figure 4-28  Loosening the screws fastening the rear midplane of the Capacity node

  4. Remove the rear midplane.
    1. As shown in step 1 in Figure 4-29, pull up the iron frame vertically and remove it.
    2. As shown in step 2 in Figure 4-29, loosen the twelve screws fastening the rear midplane in a counterclockwise manner.

    Figure 4-29  Removing the rear midplane of the Capacity node

  5. Install the rear midplane.
    1. Take the spare rear midplane out of the ESD bag.
    2. As shown in step 1 in Figure 4-30, loosen the twelve screws fastening the rear midplane in a counterclockwise manner.
    3. As shown in step 2 in Figure 4-30, push the iron frame vertically down until the rear midplane is well fixed.

    Figure 4-30  Installing the rear midplane of the Capacity node

  6. Install the fan module and top cover of the chassis.
    1. As shown in step 1 in Figure 4-31, tighten the three screws fastening the rear midplane.
    2. Install the fan module into the chassis.
    3. As shown in step 2 in Figure 4-31, tighten the four screws on each side of the chassis.
    4. Install the top cover of the chassis. For details, see 13 in Replacing a Fan Module in the Chassis.

    Figure 4-31  Tightening the screws fastening the rear midplane of the Capacity node

  7. Install the service disk enclosure.
    1. As shown in step 1 in Figure 4-32, gently push the disk enclosure into the Capacity node enclosure until it snaps into place.
    2. s shown in step 2 in Figure 4-32, fasten the 14 screws on the disk enclosure clockwise.

      Figure 4-32  Installing the service disk enclosure

  8. Install the main control board enclosure. For details, see 11 in Replacing a Fan Module in the Main Control Board Enclosure.
  9. Install the power supply. For details, see 4 in Replacing a Power Module.
  10. Install disks. For details, see 7 in Replacing a Service Disk Module.
  11. Install the Capacity node into the cabinet. For details, see 15 in Replacing a Fan Module in the Main Control Board Enclosure.
  12. Connect the Capacity node with the power supply and other devices. Ensure that the cables are connected properly, and then power on the device.
  13. Check whether the midplane has been replaced successfully.

    • If the disk is powered on correctly and the disk indicator is steady on, the midplane has been replaced successfully.
    • If the disk indicator is off, the midplane has failed to be replaced. Reinstall it or contact the technical support engineers of your vendor.

Follow-up Procedure

After the midplane is replaced, label the replaced midplane for the convenience of subsequent handling.

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Updated: 2018-10-27

Document ID: EDOC1000042171

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