Replacing Hardware Components in C-192T, C-432T, and K-432T Nodes

This section explains how to replace hardware components in C-192T, C-432T, and K-432T nodes.

Important
The C-192T, C-432T, and K-432T platforms will reach their End of Platform Support (EoPS) on May 9, 2030.

This section provides hardware replacement procedures for the C-192T, C-432T, and K-432T (Q2U_1 platform).

Replacing a DIMM

Power down your node and disconnect any cables from it.
Remove HDDs from the node due to weight. Store them in order for when they need to be reinserted (drive 1 goes to slot 1, drive 2 to slot 2, etc.).
Use a server lift to remove the server from the rack. Set the server on a stable surface.
Open the lid of the server by sliding it. You will see the NVMe cage on top of the DIMM modules.

Note
There are a couple of screws that need to be removed to lift the NVMe cage.
Lift the NVMe cage to gain access to the DIMM modules.

Note
There should be no need to remove any NVMe connections, but if you do, label them to be reconnected as originally configured.
Locate the DIMM module to replace. Refer to Drive Bay Mapping for the motherboard layout.

Note
Each DIMM has clips on each side. Only one side can be pressed down to release the DIMM.
To release and remove a DIMM, press down on the retaining clip and slide the DIMM out.
Insert the replacement DIMM into the slot, ensuring that the retaining clips lock into position.
Position the NVMe cage back in its original position, ensuring that the cables are fully connected.
Replace the lid and slide to close the server.

Before racking the server, power it on to verify that the repair was completed successfully:
- Connect a KVM to the node
- Ensure the node boots successfully (no need to add the HDD drives for this step)
- The node boots into a shell where Qumulo Core can’t start as there is no networking (this is expected)
- Verify that the NVMe drives are detected by running nvme list (should show 6 NVMe drives)
Once everything is verified, use the server lift to place the server back in the rack.
Reconnect all cables (PSU and networking).
Reinsert the HDD drives in the order that you extracted them.
Power on the node.

For chassis replacement instructions, see Replacing the Chassis.

For hardware failures, contact the Qumulo Care team: