Configure Remote Direct Memory Access Network Adapters

You can install a remote direct memory access (RDMA) network adapter on your ESXi hosts. Once installed, you can use the vSphere Client to view the RDMA adapter and its corresponding network adapter, and configure its VMkernel binding.

RDMA provides direct memory access from the memory of one host to the memory of another host without involving the remote operating system and CPU. This boosts network and host performance with lower latency, lower CPU load, and faster bandwidth.

Prerequisites

Install an RDMA-capable adapter on your ESXi host. For example, Mellanox Technologies MT27700 Family ConnectX-4.