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Parts Replacement 12

OceanStor 18500 V3 and 18800 V3 Mission Critical Storage System V300R003

This document describes the procedure for replacing the parts of storage system in terms of safety operations, preparations, and precautions.
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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 Assistant Cooling Unit

Replacing an Assistant Cooling Unit

This section describes how to replace an assistant cooling unit.

Impact on the System

During the replacement of an assistant cooling unit, system performance and reliability are compromised. Therefore, you are advised to replace an assistant cooling unit during off-peak hours.

Prerequisites

  • A replacement assistant cooling unit is ready.
  • The assistant cooling unit that you want to replace has been located.
    NOTE:
    You can locate a component in either of the following ways:
    • Log in to DeviceManager, and go to the System page. On the System page, check the device view and locate the position of the component to be replaced. If the component has a location indicator, turn on the indicator. (For details about how to turn on a location indicator, see the online help of DeviceManager.)
    • Use the alarm indicator of the component to locate its component.
  • Each assistant cooling unit is equipped with three fan modules. Before replacing an assistant cooling unit, ensure that the fan modules of the other assistant cooling unit work properly.

Precaution

  • Remove and insert an assistant cooling unit with even force. Excessive force may damage the appearance or connectors of the assistant cooling unit.
  • Remove only one assistant cooling unit at a time.
  • An assistant cooling unit must be replaced within five minutes. Otherwise, the system heat dissipation is compromised.
  • An engine's controller and assistant cooling unit (ACU) have the same appearance, but can be distinguished according to the silkscreen in the lower left corner of the front panel. CTM refers to a controller and ACU refers to an assistant cooling unit.

Tools and Materials

  • ESD wrist strap
  • ESD bag
  • Labels

Procedure

  1. Check system status before replacement.
    1. Perform a system status inspection.

      Start SmartKit. On the homepage, choose MyTools > Storage > Parts Replacement > Inspection. The Inspection Wizard step 5-1:Welcome page is displayed after you go to the Inspection page. On the wizard, select Routine inspection and perform the inspection as instructed by the wizard.

      For details, you can click .

      NOTE:

      If some items fail the inspection, rectify the faults by performing the recommended actions in the inspection reports. Ensure that all other parts except the parts to be replaced are working correctly.

    2. Perform a pre-replacement inspection.

      On the homepage, choose MyTools > Storage > Parts Replacement > FRU Replacement. On the FRU Replacement page, select the part that you want to replace and perform the pre-replacement inspection as prompted. For details, see Using SmartKit for Parts Replacement (Recommended).

      You can proceed to next step only when all items pass the pre-replacement check and the replacement page is displayed. If any item fails, rectify the fault by taking recommended actions in the inspection reports.

  2. Wear an ESD wrist strap.
  3. Press the latch on the assistant cooling unit to release the handles and pull out the assistant cooling unit, as shown in Figure 4-6.

    Figure 4-6  Removing an assistant cooling unit

  4. Take the replacement assistant cooling unit out of its ESD bag.
  5. Remove the three fan modules from the original assistant cooling unit and install them on the replacement assistant cooling unit.
    1. Press the latch on the panel, open the panel, and pull out the three fan modules one by one, as shown in Figure 4-7.

      Figure 4-7  Removing fan modules

    2. Insert the three fan modules into the replacement assistant cooling unit and close the panel, as shown in Figure 4-8.

      Figure 4-8  Installing fan modules

  6. Place the removed assistant cooling unit into an ESD bag.
  7. Fully open the handles of the replacement assistant cooling unit, insert the assistant cooling unit into the empty slot until it clicks into place, and close the handles, as shown in Figure 4-9.

    Figure 4-9  Installing an assistant cooling unit

  8. Wait about one minute (a maximum of five minutes) and check the status of the Power and Alarm indicators on the assistant cooling unit to determine whether the assistant cooling unit is successfully installed, as shown in Figure 4-10.

    • If the Power indicator is steady on and the Alarm indicator is off, the assistant cooling unit is successfully installed.
    • If the Power indicator is off or the Alarm indicator is steady on, the newly installed assistant cooling unit is faulty, the assistant cooling unit slot is faulty, or the assistant cooling unit is incorrectly installed.
    Figure 4-10  Indicators on an assistant cooling unit

    1

    Power indicator on an assistant cooling unit

    2

    Alarm indicator on an assistant cooling unit

  9. Confirm the replacement.
    1. Perform a post-replacement inspection.

      After the replacement, on the SmartKit page, click Replaced. Perform the post-replacement inspection as prompted.

    2. Check the system status after the replacement.

      Check the system status again on the Inspection page after the replacement. If any inspection item fails, rectify the fault based on the suggestions.

    3. Check services on a host for any storage-related error.

Follow-up Procedure

After an assistant cooling unit is replaced, label it to facilitate subsequent operations.

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Updated: 2019-05-15

Document ID: EDOC1000084105

Views: 21188

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