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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 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. Exercise caution when performing this operation.

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. Loosen the captive screws on the storage node panel using a screwdriver, as shown in step 1 in Figure 5-185.

      Figure 5-185  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 5-185.
    3. Push the release button upward, and remove the storage node with the inner rails. See Figure 5-186. Note that four people are required to lift the storage node.

      Figure 5-186  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 5-187.
    2. Open the ejector lever to push the enclosure cover backwards, as shown in step 2 in Figure 5-187.

      Figure 5-187  Removing an enclosure cover

  6. Remove the RAID controller card.
    1. Hold down the latches on the cables to the RAID controller card, and remove the cables from the RAID controller card.
    2. Unscrew the RAID controller card, as shown in step 1 in Figure 5-188.

      Figure 5-188  Removing a RAID controller card

    3. Lift the RAID controller card slowly, as shown in step 2 in Figure 5-188.
  7. Remove the supercapacitor tray.
    1. Loosen the screws on the trans flash module (TFM), as shown in step 1 in Figure 5-189.

      Figure 5-189  Removing a TFM

    2. Vertically lift the TFM out of the RAID controller card, as shown in step 2 in Figure 5-189.
    3. Press the latch and remove the supercapacitor tray out of the air duct, as shown in steps 1 and 2 in Figure 5-190.

      Figure 5-190  Removing a supercapacitor tray

  8. Remove the supercapacitor.
    1. Horizontally open the plastic latches that secure the supercapacitor, as shown in step 1 in Figure 5-191.

      Figure 5-191  Removing a supercapacitor

    2. Exert even force to lift the supercapacitor out of the supercapacitor tray, as shown in step 2 in Figure 5-191.
  9. Place the removed supercapacitor in an ESD bag.
  10. Take the supercapacitor out of its ESD bag.
  11. Install the supercapacitor. Place the supercapacitor downwards and exert even force to install it in the tray. Ensure that the supercapacitor is secured by the latches. As shown in Figure 5-192.

    Figure 5-192  Installing a supercapacitor

  12. Install the supercapacitor tray. Secure the supercapacitor to the air duct, as shown in Figure 5-193.

    Figure 5-193  Installing a supercapacitor tray

  13. Insert the trans flash module (TFM) vertically into the RAID controller card, as shown in steps 1 and 2 in Figure 5-194. Tighten the screws on the TFM, as shown in step 3 in Figure 5-194.

    Figure 5-194  Installing a TFM

  14. Install the RAID controller card.
    1. Align the connectors on the RAID controller card with the ports on the mainboard, and insert the RAID controller card slowly into the mainboard, as shown in step 1 in Figure 5-195.

      Figure 5-195  Installing a RAID controller card

    2. Screw the RAID controller card as shown in step 2 in Figure 5-195.
    3. Connect cables for the RAID controller card.
  15. 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 5-196.

      Figure 5-196  Installing an enclosure cover

    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 5-196.
  16. Put the storage node into the cabinet.
    1. Lift the storage node, align the inner rails with the holding rails, and push the storage node into the rack. See Figure 5-197. Note that four people are required to lift the storage node.

      Figure 5-197  Installing the storage node

    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 5-198.

      Figure 5-198  Pushing the storage node into the cabinet

    3. Tighten the captive screws on the mounting ears to secure the storage node, as shown in Figure 5-199.

      Figure 5-199  Securing a storage node

  17. Connect the storage node to the power sockets and peripheral devices according to the cable connection labels. Then power on the storage node.
  18. 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 18. If the alarm is still not cleared, contact Huawei technical support engineers.

  19. 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 supercapacitor, label the replaced supercapacitor to facilitate subsequent operations.

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Updated: 2019-07-25

Document ID: EDOC1100067965

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