Replacing a Disk Module (for a 36-Slot Disk Enclosure)

Impact on the System

The replacement of a disk triggers the pre-copy process of the disk. The pre-copy time depends on factors such as the used capacity of the disk and its utilization. You are advised to replace the disk in off-peak hours.

Prerequisites

• The spare part is on hand.
• Huawei-certified disk modules that match the product model are used as spare disk modules. These modules are obtained by service engineers based on the part codes of failed disk modules.
• The disk module that you want to replace has been located.

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

• Locating a disk based on alarms in DeviceManager: On the Alarms and Events page of DeviceManager, view the help information and determine the ID of the disk to be replaced. Then locate the disk at your site based on the disk enclosure ID and slot ID.
• Locating a component based on its location indicator: You are advised to set the location indicator of the component in DeviceManager. For details, see the Online Help of DeviceManager. Then, locate the component at your site based on its location indicator.
• Locating a component based on the status of its Running/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

• When handling a disk module, hold only its edge to prevent it from damage.
• Remove and insert a disk module with even force. Excessive force may damage the appearance of the disk module or cause faults.
• After inserting or removing a disk module, wait at least one minute before removing or inserting it to prevent disk module damage.
• To prevent data loss, replace only a disk module of which Alarm/Location indicator is steady yellow.
• Complete the replacement within five minutes after removing the original disk. Otherwise, the system heat dissipation is compromised.
• Use SmartKit to replace a failing disk.
• Ensure that the spare part is inserted in to the same slot as the replaced disk. Otherwise, the system may work incorrectly.

Tools and Materials

• 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. Perform a pre-replacement check.

      Start SmartKit and choose Home > Storage > Parts Replacement > More > Parts Replacement (CRU). On the CRU replacement page, complete the check before the replacement as prompted. For details, see Replacing a CRU.

      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.
3. Press the latch on the disk module to release the handle and pull out the disk module, as shown in Figure 7-142.
   Figure 7-142 Removing a disk module
   

4. Put the removed disk module into an ESD bag.
5. Take the spare part out of its ESD bag.
6. Open the handle of the spare part, insert the spare part into the empty slot, and close the handle, as shown in Figure 7-143.

   Insert the disk module into the slot by pushing the middle area of the disk module (as shown in arrow 1 in Figure 7-143) to ensure that the disk module is properly inserted into its position.

   Figure 7-143 Installing a disk module
   

7. Wait about two minutes and check the status of the Running and Alarm/Location indicators on the disk module to determine whether the disk module has been successfully installed. Figure 7-144 shows the locations of the Running and Alarm/Location indicators.
   • If the Running indicator is steady on and the Alarm/Location indicator is off, the disk module has been successfully installed.
   • If the Running indicator is off or the Alarm/Location indicator is steady on, the newly installed disk module is faulty, the disk module slot is faulty, or the disk module is incorrectly installed.
   Figure 7-144 Indicators on a disk module
   

   1

   Running indicator of the disk module

   2

   Alarm/Location indicator of the disk module

8. 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 the system status after the replacement.

      Return to the home page, choose Home > Storage > Routine Maintenance > Health Check, and check the system status again. If any inspection item fails, 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. If any storage-related error is reported, contact Huawei technical support.

Follow-up Procedure

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