Replace a compute node

Use this information to replace a defective compute node.

1. Remove one of the following components from the compute node:

   • Compute node cover: see Remove the compute node cover.

   • PCIe expansion node: see Remove the PCIe expansion node from a compute node.

2. Remove the air baffle from the compute node (see Remove the air baffle).
3. Remove all the drives and drive bay fillers, and place them on a static-protective surface (see Remove a hot-swap drive).
   Note

   Record the drive bay number when removing the drives so that you can install them back into the same drive bays in the replacement compute node.
4. If a KVM breakout module has been installed in the compute node, remove it (see Remove the KVM breakout module).
5. If a RAID adapter has been installed in the compute node, remove it and place it on a static-protective surface (see Remove a RAID adapter from the compute node).
6. Remove the drive backplane from the compute node (see Remove the drive backplane), and immediately install it in the replacement compute node (see Install the drive backplane).
7. Install the drives that were removed earlier to the replacement compute node (see Install a hot-swap drive).
8. Transfer processor and heat sink assembly 1 (the rear processor) from the compute node to the replacement unit:
   1. Remove the socket cover from the processor socket in which you plan to install the processor in the replacement compute node.
   2. Remove the processor and heat sink assembly from the defective compute node (see Remove a processor and heat sink).
   3. Install the processor and heat sink assembly into the socket in the replacement compute node (see Install a processor and heat sink).
   4. Orient the socket cover that was removed earlier above the empty processor socket in the defective compute node; then, gently press on the four corners of the socket cover that you placed on the empty processor socket in to secure the cover to the socket.
   Attention

   When transferring a processor and heat sink assembly to a replacement compute node:

   • Install the removed processor and heat sink assembly to the replacement compute node immediately after removal.

   • Always protect an empty processor socket in a compute node with a socket cover.

9. Repeat the previous step for the second processor and heat sink assembly (the front processor) if necessary.
10. Remove one memory module at a time from the defective compute node (see Remove a memory module), and immediately install it into the same memory module slot in the replacement compute node (see Install a memory module) until all the memory modules are transferred.
11. If a M.2 backplane has been installed in the compute node, remove it (see Remove the M.2 backplane) and install it in the replacement compute node (see Install the M.2 backplane).
12. If a TCM/TPM has been installed in the compute node, remove it from the compute node (see Remove the Trusted Cryptographic Module (TCM)), and install it in the replacement compute node (see Install the Trusted Cryptographic Module (TCM)).
13. If a RAID adapter has been removed, install it in the replacement compute node (see Install a RAID adapter into the compute node).
14. If a KVM breakout module has been removed, install it in the replacement compute node (see Install the KVM breakout module).
15. Route and connect all cables transferred in previous steps (see Internal cable routing).
16. Install the air baffle in the replacement compute node (see Install the air baffle).
    Note

    For proper cooling and airflow, make sure to install the air baffle. Operating the node with the air baffle removed might lead to component damage.
17. Install the component removed in step 1:

    Compute node cover:

    1. Install the original node cover to the replacement unit.
    2. Install the replacement unit cover to the defective unit and return it to Lenovo. Make sure to follow all packaging instructions, and use any packaging materials for shipping that are supplied to you.

       See Install the compute node cover.

    PCIe expansion node:

    1. Install the PCIe expansion node that was removed earlier to the replacement compute node (see Install the PCIe expansion node to a compute node).