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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 an NVDIMM

Replacing an NVDIMM

A non-volatile dual in-line memory module (NVDIMM) is mainly used to save data within it if a system power outage occurs.

Impact on the System

Before replacing an NVDIMM, you must power off the storage node. This will adversely affect the services running on the node. Exercise caution when performing this operation.

Prerequisites

  • The replacement NVDIMM is ready.
    NOTE:

    The replacement NVDIMM must be brand-new.

  • You have obtained the OceanStor 9000 V5 Version Mapping and OceanStor 9000 V5 Node Firmware Upgrade Guide of the corresponding version.
    NOTE:
    You can log in to http://support.huawei.com/enterprise/, choose Support > Cloud Storage, and click the product model to go to the document page of the product. Then, click Downloads tab page. On the Downloads tab page, click the version that you need download, the download page is displayed. And then download the documents.

Precaution

  • Only professional technical support engineers are allowed to replace an NVDIMM.
  • A storage node has two power modules. Ensure that both are disconnected.
  • Before the replacement, remove the cable connection between the NVDIMM and its supercapacitor.
  • An NVDIMM has only one installation direction. If an NVDIMM cannot be properly seated in a slot, do not exert excess force on the module to avoid damaging the NVDIMM or slot.
  • Before replacing an NVDIMM, record the system memory capacity for check and comparison after the replacement.
  • An NVDIMM is located at DIMM000(A) in Figure 3-147.
    Figure 3-147  NVDIMM location

Tools and Materials

  • Flat-head screwdrivers
  • Electrostatic discharge (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 enclosure.
    1. Loosen the captive screws on the storage node panel using a screwdriver, as shown in step 1 in Figure 3-148.

      Figure 3-148  Pulling out a storage node

    2. Pull out the storage node along the guide rails away from the cabinet, as shown in step 2 in Figure 3-148.
    3. Lever the latches on both sides upwards and remove the storage node in the direction of the arrow by holding the storage node bottom, as shown in Figure 3-149.

      Figure 3-149  Removing the storage node from the holding rails

  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 3-150.
    2. Open the ejector lever to push the enclosure cover backwards, as shown in step 2 in Figure 3-150.

      Figure 3-150  Removing an enclosure cover

  6. Lift the air duct according to the signs on the air duct, as shown in Figure 3-151.

    Figure 3-151  Removing the air duct

  7. Remove the NVDIMM.
    1. At the same time, open the fixing clips of the NVDIMM slot, as shown in step 1 in Figure 3-152.

      Figure 3-152  Removing an NVDIMM

    2. Remove the NVDIMM from the slot, as shown in step 2 in Figure 3-152.
  8. Remove the power cable connection between the NVDIMM and its supercapacitor.

    Do not damage the power cable that connects the supercapacitor to the NVDIMM.

  9. Put the removed NVDIMM into an ESD bag.
  10. Take the replacement NVDIMM out of its ESD bag.
  11. Connect the power cable connection between the NVDIMM and its supercapacitor.
  12. Align the NVDIMM with the NVDIMM slot, and insert the NVDIMM into the slot. The two fixing clips close automatically, as shown in Figure 3-153.

    Figure 3-153  Installing an NVDIMM

  13. Align the positioning pins on the air duct with the fixing holes on the mainboard by following the instructions on the enclosure, and vertically place the air duct downwards, as shown in Figure 3-154.

    Figure 3-154  Installing an air duct

  14. 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 3-155.
    2. Use a flat-head screwdriver to tighten the latch in order to secure the ejector lever of the enclosure cover, as shown in step 3 in Figure 3-155.

      Figure 3-155  Installing an enclosure cover

  15. Put the storage node into the cabinet.
    1. Pull out the inner rails as far as they will go, as shown in Figure 3-156.

      Figure 3-156  Pulling out an inner rail

    2. Align the screws on the storage node with the notches on the inner guide rails, push the storage node inwards until you hear a sound, and ensure that the latches eject and completely block the screws to affix the storage node to the inner guide rails, as shown in Figure 3-157.

      Figure 3-157  Installing a storage node

    3. Press the release buttons on both sides and push the storage node into the cabinet along the holding rails, as shown in steps 1 and 2 in Figure 3-158.

      Figure 3-158  Pushing the server into the cabinet along the holding rails

    4. Optional: Tighten the captive screws on the mounting ears to secure the storage node, as shown in Figure 3-159.

      Figure 3-159  Securing the storage node

  16. Connect the storage node to the power sockets and peripheral devices according to the cable connection labels. Then power on the storage node.
  17. Log in to the storage node using the KVM.
  18. Clear NVDIMM data.
    1. When the screen shown in Figure 3-160 is displayed during the system startup, press Delete.

      Figure 3-160  BIOS startup page

      NOTE:
      If a dialog box that informs you of entering the password is displayed, enter the BIOS password (default: Admin@9000).

    2. Choose Security > Clear NvDimm Flash and press Enter, as shown in Figure 3-161.

      Figure 3-161  Choosing Clear NvDimm Flash

    3. In the Clear NvDimm Flash dialog box, select Yes and press Enter, as shown in Figure 3-162.

      Figure 3-162  Starting to clear NVDIMM data

    4. If the Clear NvDimm flash success! message is displayed, data in the NVDIMM is cleared, as shown in Figure 3-163.

      Figure 3-163  NVDIMM data cleared

    5. Press Enter and then F10. In the dialog box that is displayed, select Yes and press Enter to save the configuration and restart the storage node, as shown in Figure 3-164.

      Figure 3-164  Saving the configuration and restarting the storage node

  19. 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 3-165.

      Figure 3-165  BIOS startup page
      NOTE:

      If a dialog box that informs you of entering the password is displayed, enter the BIOS password (default: Admin@9000).

    2. On the BIOS interface that is displayed, check the system memory capacity, as shown in Figure 3-166.

      Figure 3-166  Checking memory capacity
      NOTE:
      • If the system memory capacity equals the actual memory capacity, the installation is successful. Then restart the device.
      • If the system memory capacity is less than the actual memory capacity, the installation fails. Remove and reinsert the DIMM.

  20. Check and upgrade the firmware of an NVDIMM.
    1. On the node where the NVDIMM to be replaced resides, run the /usr/local/nvdimm/nvdimm getfwver command to view the value of FW version, which is the firmware version of the NVDIMM.
    2. Check whether the firmware version of the NVDIMM recorded in the OceanStor 9000 V5 Version Mapping is the same as the one you have obtained.

      • If yes, there is no need to upgrade firmware.
      • If no, go to 20.c

    3. Upgrade the firmware of the NVDIMM to the required version by referring to the OceanStor 9000 V5 NVDIMM Firmware Upgrade Guide. To obtain this guide, decompress the OceanStor 9000 V5 Node Firmware Upgrade Guide package.
  21. 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 NVDIMM, label the replaced NVDIMM to facilitate subsequent operations.

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Updated: 2019-07-25

Document ID: EDOC1100067965

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