Replacing an RDMA Cable

Impact on the System

When an RDMA cable is being replaced, services on this cable are interrupted. Exercise caution when performing this operation.

Prerequisites

• The spare part is on hand.
• The RDMA cable that you want to replace has been located.

• Data has been backed up before you replace the RDMA cable in online mode.

Precautions

Remove and insert an RDMA cable with even force. Excessive force may damage the appearance of the RDMA cable or cause faults.

Tools and Materials

• ESD wrist strap
• ESD bag
• Labels

Procedure

1. Perform a pre-replacement check.
   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. 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.
3. Hold the RDMA cable and push the connector slightly inwards, as shown in Figure 7-69.
   Figure 7-69 Pushing the cable connector inwards
   

4. Hold the plastic ring and pull it out in the arrow direction until the RDMA cable is unlocked, as shown in Figure 7-70 and Figure 7-71.
   Figure 7-70 Top view of removing an RDMA cable
   
   Figure 7-71 Bottom view of removing an RDMA cable
   

5. Pull the RDMA cable connector out of the port and put it into an ESD bag.
6. Take the spare part out of its ESD bag.
7. Insert the spare part vertically into the original position, as shown in Figure 7-72.
   Figure 7-72 Connecting an RDMA cable
   

8. Check the status of the port indicator to determine whether the RDMA cable has been successfully installed.
   • If the indicator is steady green or blue, the RDMA cable has been successfully installed.
   • If the indicator is steady yellow or off, the newly installed RDMA cable is faulty, the RDMA cable slot is faulty, or the RDMA cable is incorrectly installed.

9. 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 RDMA cable is replaced, label it to facilitate subsequent operations.