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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 a CPU

Replacing a CPU

A CPU provides powerful data processing capabilities and integrates both the memory controller and the Peripheral Component Interconnect Express (PCIe) controller.

Impact on the System

  • Before replacing a CPU, you must power off the P36E or C36E node. This will adversely affect the services running on the node. Exercise caution when performing this operation.
  • When you replace a CPU, wear an electrostatic discharge (ESD) wrist strap instead of ESD gloves.

Prerequisites

  • The replacement CPU is ready.
  • The faulty CPU has been located.
  • You have recorded the cable mapping of the device, securely stopped the services, executed a shut-down command in the operating system to power off the P36E or C36E node, and disconnected the node from power sockets and peripheral devices.

Tools and Materials

  • Flat-head screwdrivers
  • Phillips screwdrivers
  • ESD gloves
  • ESD wrist straps
  • ESD bags
  • Labels

Procedure

  1. Wear an ESD wrist strap or ESD gloves.
  2. Use the KVM to log in to the operating system of the node, enter user name root and its password (default: Root@storage), and run poweroff command to power off the node.

    Wait until the KVM has no output. The power-off is complete.

  3. Remove all power cables and external signal cables.
  4. Remove the storage node from the cabinet.
    1. Loosen the captive screws on the panel using a Phillips screwdriver, as shown in step 1 in Figure 4-73.

      Figure 4-73  Removing a storage node

    2. Slowly pull the storage node out along the guide rails, as shown in step 2 in Figure 4-73.
    3. Press the release buttons on both sides and pull the storage node out of the cabinet along the guide rails, as shown in step 3 in Figure 4-73.
  5. Remove the enclosure cover.
    1. Use a flat-head screwdriver to loosen the latch that secures the ejector lever of the enclosure cover, as shown in step 1 in Figure 4-74.
    2. Open the ejector lever to push the enclosure cover backward, as shown in step 2 in Figure 4-74.

      Figure 4-74  Removing an enclosure cover

  6. Optional: Remove the riser card tray. For details, see 6 in Replacing a Riser Card.

    NOTE:

    If the configured riser card is with full height and full length, remove the riser card tray first.

  7. Lift the air duct, as shown in Figure 4-75.

    Figure 4-75  Removing an air duct

  8. Remove the heat sink.
    1. Use a Phillips screwdriver to loosen the four screws on the heat sink in the diagonal direction, as shown on step 1 in Figure 4-76.

      Figure 4-76  Removing a heat sink

    2. Lift the heat sink, as shown in step 2 in Figure 4-76.
  9. Pull out the CPU.

    Do not use any tool or sharp object to lift the securing rods on the CPU socket. Otherwise, the storage node may be damaged.

    1. Unlock the securing rods close to label or , as shown in steps 1 and 2 in Figure 4-77.

      Figure 4-77  Removing a CPU

    2. Open the CPU socket load plate and lift the CPU vertically off the socket, as shown in steps 3 and 4 in Figure 4-77.
  10. Put the removed CPU into an ESD bag.

    The CPU socket cannot be exposed and must be covered by a CPU or a protective cover during transportation and storage.

  11. (Optional) Install a CPU protective cover.
    1. Close the CPU socket load plate, as shown in step 1 in Figure 4-78.

      Figure 4-78  Installing a CPU protective cover

    2. Keep the CPU protective cover parallel with the CPU socket load plate. Align the cover with the load plate and then put the cover vertically down on the load plate, as shown in step 2 in Figure 4-78.
    3. Lock the securing rods, as shown in steps 3 and 4 in Figure 4-78.
  12. Take the replacement CPU out of its ESD bag.
  13. Paste thermal compound.
    1. Before pasting thermal compound, check the CPU socket to ensure that the socket is free from bent pins and contamination.

      If the CPU socket has bent pins and contamination, stop your operations and contact Huawei technical support.

    2. Before pasting thermal compound, use tissues to clean up the dirt and remaining thermal compound on the surfaces of the CPU and heat sink.
    3. Determine the area on the heat sink that contacts the CPU, and paste 0.4 ml thermal compound at the center of the area.

      NOTE:
      Use a syringe to measure the thermal compound to be pasted on the CPU.

      Figure 4-79 shows the recommended pasting methods, namely, dual-line pasting, cross pasting, five-point pasting, and S-shape pasting.

      Figure 4-79  Pasting methods

    4. Use a clean blade or card to smear the thermal compound over the entire center of the CPU.
  14. Install the CPU.

    • Before installing the CPU, ensure that the securing rods on the CPU socket are fully opened to prevent damage to the CPU, CPU socket, and mainboard.
    • When you lock the securing rods, do not use excess force or touch any components on the CPU or any pins on the CPU socket.
    • Do not horizontally move the CPU if it is not properly placed to avoid twisting any pins. Lift the CPU until it is out of the socket, and then place it in the socket properly.

    1. Keep the CPU parallel with the CPU socket and vertically insert it into the CPU socket, as shown in step 1 in Figure 4-80.

      Figure 4-80  Installing a CPU

      You must align the CPU triangle with the triangle on the CPU socket. Ensure that the CPU is not tilted. Figure 4-81 shows the incorrect CPU placement.
      Figure 4-81  Incorrect CPU placement

    2. Close the CPU socket load plate, as shown in step 2 in Figure 4-80.
    3. Lock the securing rods close to label or , as shown in steps 3 and 4 in Figure 4-81.
  15. Install a heat sink.
    1. Align the heat sink with the fastening studs on the CPU socket and press the heat sink gently until the heat sink fully touches the CPU, as shown in step 1 in Figure 4-82.

      Figure 4-82 shows the directions of how to place the heat sink.

      Figure 4-82  Installing a heat sink

    2. Use a Phillips screwdriver to fasten the four screws on the heat sink in the diagonal direction, as shown on step 2 in Figure 4-82.
  16. Align the positioning pins on the air duct with the fixing holes on the mainboard, and vertically place the air duct downwards, as shown in Figure 4-83.

    Figure 4-83  Installing an air duct

  17. Optional: Install the riser card tray. For details, see 12 in Replacing a Riser Card.

    NOTE:

    If the configured riser card is with full height and full length, install the riser card tray.

  18. Install the enclosure cover.
    1. Place the enclosure cover horizontally, align it with the fixing slots on both side panels of the enclosure, and close the ejector lever, as shown in steps 1 and 2 in Figure 4-84.

      Figure 4-84  Installing an enclosure cover

    2. Tighten the latch to secure the ejector lever of the enclosure cover using flat-head screwdriver, as shown in step 3 in Figure 4-84.
  19. Put the storage node into the cabinet.
    1. Arrange at least four persons to lift the storage node on both sides, align the inner rails on the storage node with the holding rails, and push the storage node into the cabinet along the holding rails, as shown in Figure 4-85.

      Figure 4-85  Pushing a storage node into holding rails

    2. Press the release buttons on both sides, and push the storage node into the cabinet until the storage node cannot move forward, as shown in Figure 4-86.

      Figure 4-86  Pushing a storage node into a cabinet

    3. Tighten the two captive screws on the mounting ears to secure the storage node, as shown in Figure 4-87.

      Figure 4-87  Securing a storage node

  20. Connect the storage node to the power sockets and peripheral devices according to the cable connection labels. Then power on the storage node.
  21. Log in to the storage node using the KVM.
  22. Clear NVDIMM data.
    1. Press Delete repeatedly when the screen shown in the following figure is displayed during server startup.

      Figure 4-88  BIOS startup screen

    2. Enter a BIOS password as prompted. The screen for setting the BIOS is displayed.

      NOTE:

      The default BIOS password is Huawei12#$ for the French or American keyboard and is Huawei12£$ for the English keyboard.

      To ensure system security, you are advised to change the default BIOS password after the first login.

    3. Choose Security > Clear NvDimm Flash.

      Figure 4-89  Choosing Clear NvDimm Flash

    4. In the Clear NvDimm Flash? dialog box, select Yes and press Enter.

      Figure 4-90  Starting to clear NVDIMM data

    5. Wait 20 seconds. Check whether the displayed dialog box states "Clear NvDimm flash success. Please reboot system!"

      • If yes, go to 22.f.
      • If no, contact technical support.
      Figure 4-91  Clearing NVDIMM data

    6. Press Enter and then F10. In the dialog box that is displayed, select Yes to save the configuration and restart the storage node.

      Figure 4-92  Saving the configuration and restarting the storage node

  23. During the system startup, the basic input/output system (BIOS) interface is displayed. Check the system memory capacity.
    1. If information similar to the following is displayed, press Delete repeatedly. The BIOS interface is displayed, as shown in Figure 4-93.

      Figure 4-93  BIOS startup page

      NOTE:

      If a dialog box that informs you of entering the password is displayed, enter the BIOS password (default: Huawei12#$).

    2. The BIOS interface is displayed. View the CPU information and check whether the CPU is successfully installed, as shown in Figure 4-94.

      Figure 4-94  Viewing the CPU information

      NOTE:
      • If the displayed CPU information matches the actual CPU information, the CPU is successfully installed. Start the device.
      • If the CPU information is not displayed or is different from the actual CPU information, the CPU may not be properly installed. In this case, install the CPU again.

  24. Inspect the system using SmartKit. Choose Home > Storage > Routine Maintenance > More > Inspection to check the system status. For details, see the OceanStor 9000 V5 Routine Maintenance.

    • If all inspection items are successful: The inspection is successful.
    • If some inspection items fail the inspection: The inspection is failed. Rectify the faults by taking recommended actions in the inspection reports. You need to reperform inspection after rectifying. If the inspection is still failed, contact Huawei technical support.

Follow-up Procedure

After replacing the CPU, label the replaced CPU to facilitate subsequent operations.

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Updated: 2019-07-25

Document ID: EDOC1100067965

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