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OceanStor 9000 V300R006C10 Parts Replacement 06

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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 Supercapacitor

Replacing a Supercapacitor

A supercapacitor provides power failure protection for NVMDIMM.

Impact on the System

Before replacing a supercapacitor, you must power off the storage node. This will adversely affect the services running on the node.

Prerequisites

The replacement supercapacitor is ready.

Precaution

  • Only professional technical support engineers are allowed to replace a supercapacitor.
  • A storage node has two power modules. Ensure that both are disconnected.
  • To prevent personal injury, arrange two persons to replace it.

Tools and Materials

  • Flat-head screwdrivers
  • Phillips 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. Slide the storage node out of the cabinet, as shown in step 1 in Figure 2-142.
    2. Press the baffle plate and slide the storage node out of enclosure, as shown in step 2 in Figure 2-142.

    Figure 2-142  Removing a storage node

  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 2-143.
    2. Open the ejector lever to push the enclosure cover backwards, as shown in step 2 in Figure 2-143.

      Figure 2-143  Removing an enclosure cover

  6. Remove the system disk module. For details, see 7 in Replacing a System Disk Backplane.
  7. Remove the supercapacitor tray.
    1. Loosen screws that fasten the supercapacitor tray, as shown in step 1 in Figure 2-144.

      Figure 2-144  Removing the supercapacitor tray

    2. Press and open the latch on the disk module, as shown in step 2 and step 3 in Figure 2-144.
    3. Take out the supercapacitor slowly, as shown in step 4 in Figure 2-144.
  8. Remove the supercapacitor.
    1. Loosen screws that fasten the supercapacitor, as shown in step 1 in Figure 2-145.

      Figure 2-145  Removing the supercapacitor

    2. Lift the supercapacitor, as shown in step 2 in Figure 2-145.
  9. Remove the power cable connection between the NVDIMM and its supercapacitor.

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

  10. Place the removed supercapacitor in an ESD bag.
  11. Take the supercapacitor out of its ESD bag.
  12. Connect the power cable connection between the NVDIMM and its supercapacitor.
  13. Install the supercapacitor.
    1. Insert the supercapacitor vertically downward into the tray, as shown in step 1 in Figure 2-146.

      Figure 2-146  Installing the supercapacitor.

    2. Tighten screws that fasten the supercapacitor, as shown in step 2 in Figure 2-146.
  14. Install the supercapacitor tray.
    1. Align the tray with the screw holes and insert it horizontally into the system module, as shown in step 2 in Figure 2-147.

      Figure 2-147  Installing the supercapacitor tray

    2. Close the latch, as shown in step 1 Figure 2-147.
    3. Tighten the screws that fasten the supercapacitor tray, as shown in step 2 in Figure 2-147.
  15. Install the system disk module. For details, see 14 in Replacing a System Disk Backplane.
  16. 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 2-148.
    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 2-148.

      Figure 2-148  Installing an enclosure cover

  17. Put the storage node into the cabinet.
    1. Align the securing holes in the inner rails with the positioning pins on the storage node, and secure the inner rails to the storage node, as shown in step 1 in Figure 2-149.
    2. Align the inner rails with the holding rails, and push the storage node into the holding rails, as shown in step 2 in Figure 2-149.
    3. Ensure that the storage node is horizontally installed and screwed.

    Figure 2-149  Installing a storage node

  18. Connect the storage node to the power sockets and peripheral devices according to the cable connection labels. Then power on the storage node.
  19. On DeviceManager, check the status of the storage node.
    1. Start the browser on the maintenance terminal and log in to DeviceManager.
    2. In the Alarms group box, check whether the alarm is cleared.

      • If yes, the installation is successful.
      • If no, the supercapacitor may be incorrectly installed. Perform steps 2 to 19. If the alarm is still not cleared, contact Huawei technical support engineers.

  20. Inspect the system using SmartKit. Choose Home > Storage > Routine Maintenance > More > Inspection to check the system status. For details, see the OceanStor 9000 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 supercapacitor, label the replaced supercapacitor to facilitate subsequent operations.

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Updated: 2019-02-25

Document ID: EDOC1000162172

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