Replacing a BBU (for OceanStor 2200 V5)

Impact on the System

During the replacement of a BBU, removing the controller where the BBU resides decreases the system performance and reliability. Therefore, you are advised to replace the BBU during off-peak hours.

Prerequisites

• If services are running on the controller to which the BBU to be replaced belongs, ensure that the average CPU usage of a controller does not exceed 40%.
• The cable connection positions of the controller to which the BBU to be replaced belongs are marked.
• The spare part is on hand.

  Prepare the BBU to be replaced in advance, unpack the BBU, and place it in a convenient position for timely replacement.

• The BBU that you want to replace has been located.

You can locate a component in either of the following ways:

• Locating a component based on alarms in DeviceManager: On the Alarms and Events page of DeviceManager, view the help information and determine the ID of the component to be replaced. Then locate the component at your site based on its ID.
• Locating a component based on the status of its Alarm indicator: For details about the indicators on different components, see "Indicator Introduction" of each component in the Product Description specific to your product model and version.

Precautions

• Remove and insert a BBU and the controller to which the BBU belongs with even force. Excessive force may damage the appearance of the BBU or cause faults.
• The interval between the removal and insertion of a controller must be within three minutes. Otherwise, the system heat dissipation is compromised.
• After you release the controller handle to unlock the controller, you can remove the controller and replace the BBU only after all indicators on the rear panel of the controller are off.

Tools and Materials

• ESD table
• ESD wrist strap
• ESD bag
• Labels

Procedure

1. Check status before replacement.
   1. Check system status.

      Start SmartKit and choose Home > Storage > Routine Maintenance > Health Check. On the Health Check page, perform inspection as instructed. For details, see Checking System Status.

      If any 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 properly.

   2. Evaluate the replacement.

      Start SmartKit and choose Home > Storage > Parts Replacement > Parts Replacement Evaluation. If any check item fails, rectify the fault as instructed.

   3. Check the status of the parts to be replaced.

      Start SmartKit and choose Home > Storage > Parts Replacement > Parts Replacement. On the Parts Replacement page, click FRU Replacement. Then complete the check before the replacement as prompted. For details, see Replacing an FRU.

      You can proceed to next steps only when all items pass the pre-replacement check and the replacement page is displayed. If any item fails, rectify the fault as prompted.

2. Wear an ESD wrist strap or ESD gloves.
3. Remove the cable from the interface module of the controller to which the BBU to be replaced belongs.
4. Press the latch on the controller to release the handle and unlock the controller in the direction of the arrow. After all indicators on the rear panel of the controller are off, pull out the controller, as shown in Figure 8-117.
   Figure 8-117 Removing the controller
   

5. Place the removed controller on the ESD table.
6. Press the latch to unlock the BBU, lift two sides of the BBU in sequence, and remove the BBU, as shown in Figure 8-118.

   Do not touch the memory module when replacing a BBU.

   Figure 8-118 Removing the BBU
   

7. Put the removed BBU module into an ESD bag.
8. Take the spare part out of its ESD bag.
9. Insert the spare part into the empty slot, as shown in Figure 8-119.
   Figure 8-119 Installing the BBU
   

10. Fully open the handle of the controller, insert the controller into the empty slot, and close the handle, as shown in Figure 8-120.
    Figure 8-120 Installing the controller
    

11. Connect cables to their corresponding locations.
12. Wait until the controller is powered on and check the status of the Power indicator, Alarm indicator, and built-in FRU Alarm indicator on the controller to determine whether the BBU has been successfully installed, as shown in Figure 8-121.
    • If the Power indicator is on and the Alarm indicator is off, the controller has been installed successfully.
    • If the Power indicator is off or the Alarm indicator is on, the newly installed controller is faulty, the controller slot is faulty, or the controller is not properly installed or is not powered on.
    • If the BBU Running/Alarm indicator is steady yellow or off, the newly installed BBU is faulty, the BBU slot is faulty, or the BBU is incorrectly installed.
    Figure 8-121 Indicators of the controller
    

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

       After the parts replacement, return to the SmartKit page and click Replaced. Then complete the check after the replacement as prompted.

    2. Check system status.

       On the Parts Replacement page, click Inspection to check the system status again. If any item fails inspection, rectify the fault based on the suggestions in the inspection report.

    3. After the preceding procedure is complete, check services on the host for storage-related errors.

Follow-up Procedure

After the BBU is replaced, label it to facilitate subsequent operations.