5. Replacing a Node

In case a Cluster Node needs to be replaced, proceed as follows concerning the PCIe interconnect:

  1. Power down the Cluster Node.

  2. Unplug all cables from the adapter.

  3. Unmount the adapter from the Cluster Node to be replaced, and insert it into the new Cluster Node.

  4. Power up the Cluster Node; then connect the cables in the same way they had been connected before. Make sure that all LEDs on all adapters in the affected ringlets light green again.

  5. Run dis_diag to verify the functionality of the interconnect (see Section 1.2, “Static PCIe Interconnect Test - dis_diag”).

Communication between all other Cluster Nodes will continue uninterrupted during this procedure.