Replacing a System Disk Module on a Mainboard (OceanStor Pacific 9920 Palm-sized NVMe SSD 25-Slot)

Impact on the System

• If RAID 1 is configured, the system will not be affected. If RAID 1 is not configured, the system will be faulty.
• When replacing a system disk module using a tool, you need to power off the node as prompted. This will affect the services running on the node.

Prerequisites

• The replacement system disk module (spare part) has been prepared.

• The faulty system disk module has been located.

Precautions

• Do not remove the two system disk modules on a device at the same time. Otherwise, the device will not work properly.
• To prevent system faults, do not replace system disk modules with ones that have been used before.
• To prevent replacement failures, ensure that replacement disk modules are free from obvious foreign objects, collision, and scratches.
• To prevent replacement failures, ensure that the disk slots are free from foreign objects or obvious damage before installing disk modules.
• To prevent system faults, use the BOM code of the faulty disk module to apply for a replacement disk module.
• To prevent damaging system disk modules or connectors, remove and install disk modules with even force.
• After a system disk module on a device is replaced, data will be reconstructed on the replacement system disk module. Do not remove and insert the other system disk module on the device during data reconstruction. Otherwise, the device will not work properly.

Tools and Materials

• Phillips screwdriver
• ESD gloves
• ESD wrist strap
• ESD bag
• Labels

Procedure

1. Label and disconnect all power cables and signal cables.
2. Remove the front panel cover.

   Press the release button on the right of the front panel cover, tilt the front panel cover by 20° to 30° forward, and move the front panel cover rightward to separate it from the groove on the left of the system subrack. Then, remove the front panel cover. See (1), (2), and (3) in Figure 1.

   Figure 1 Removing a front panel cover
   

3. Remove the storage device.

   Loosen the two captive screws on the panel. See (1) in Figure 2. Pull out the storage device along the guide rails away from the cabinet and place it on the ESD table. See (2) in Figure 2.

   Figure 2 Removing a storage device
   

4. Remove the node cover.
   1. Loosen the three screws and push the node cover backwards to unlock it. See (1) and (2) in Figure 3.
      Figure 3 Removing screws from the node cover
      
   2. Remove the node cover upwards. The locking spring rods of the node eject automatically. See (1) and (2) in Figure 4.
      Figure 4 Removing a node cover
      

5. Remove a power adapter module.
   Press the release button on the power adapter module, and pull out the power adapter module along the guide rails by holding the handle. See (1) and (2) in Figure 5.

   Figure 5 Removing a power adapter module
   

6. Remove a PSU bracket.

   Loosen the four captive screws that secure the PSU support, and lift the PSU support. See Figure 6.

   Figure 6 Removing a PSU bracket
   

7. Remove the two DIMMs near the M.2 SSD module to leave space for replacement.
   Figure 7 Removing DIMMs
   

8. Remove the M.2 SSD module.
   Press the latch that secures the disk module, tilt the disk module upwards by 20° to 30°, and remove the disk module. See (1) and (2) in Figure 8.

   Figure 8 Removing a disk module
   

9. Put the removed M.2 SSD module into an ESD bag.
10. Take the replacement M.2 SSD module out of its ESD bag.
11. Install the replacement M.2 SSD module.
    Tilt the disk module 20° to 30° and insert it into the node slot. Press the latch that secures the disk module, and press the disk module until it is secured to the latch. See (1) and (2) in Figure 9.

    Figure 9 Installing a disk module
    

12. Install the two DIMMs near the M.2 SSD module.
    1. Open the two fixing clips on the DIMM slot simultaneously. See Figure 10.
       Figure 10 Opening fixing clips on a DIMM slot
       
    2. Align the DIMM with the DIMM slot, and insert the DIMM into the slot. See Figure 11. Press the DIMM downwards till the two fixing clips close automatically.
       Figure 11 Installing a DIMM
       

13. Install the PSU bracket.

    Install the PSU bracket downwards to the node, and secure the PSU bracket using four captive screws. See Figure 12.

    Figure 12 Installing a PSU bracket
    

14. Install a power adapter module.

    Keep the TOP of the power adapter module facing upwards, and insert the power adapter module along the guide rails of the power support until the power adapter module is locked and cannot move. See Figure 13.

    Figure 13 Installing a power adapter module
    

15. Install the node cover.
    1. Place the latches of the node cover into the slots and align the node cover with the node. Press the rear of the node with both hands and push the cover inward until it cannot move. See Figure 14.
       

       When installing a node cover, use both hands to press down the spring rods at the rear of the node and push them inwards to ensure that the node cover is securely installed.

       Figure 14 Installing a node cover
       
    2. Secure the node cover using three screws. See Figure 15.
       Figure 15 Locking a node cover
       

16. Install a storage device.
    1. Arrange for at least two persons to horizontally lift the storage device from both sides.
    2. Place the storage device on the guide rails and push it into the cabinet. See (1) in Figure 16.
    Figure 16 Installing a storage device
    
    3. Align the mounting ears of the storage device with the mounting bars, and tighten the captive screws on the mounting ears in clockwise direction. See (2) in Figure 16.

17. Install the front panel cover.
    Align the latch on the left of the front panel cover with the groove on the left of the system subrack, and push the right of the front panel cover forward until you hear a click. Ensure that the front panel cover is fully secured to the system subrack. See (1) and (2) in Figure 17.

    Figure 17 Installing a front panel cover
    

18. Connect external signal cables and power cables based on the labels. Ensure that all cables are correctly connected, and press the power button to power on the device.

Follow-up Procedure

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