NVIDIA 900-9X6AF-0058-ST1 | ConnectX-6 VPI 200Gb/s Dual-Port QSFP56 Network Adapter

Q: What is VPI and what protocols does this adapter support?
A: VPI (Virtual Protocol Interconnect) allows the adapter to operate as either InfiniBand or Ethernet on the same physical port. This card supports HDR InfiniBand up to 200Gb/s and Ethernet speeds from 1GbE to 200GbE, making it highly flexible for mixed-protocol environments.

Q: Does this adapter support RDMA for low-latency applications?
A: Yes, the ConnectX-6 VPI supports both IBTA RDMA for InfiniBand and RoCEv2 (RDMA over Converged Ethernet) for Ethernet deployments. This enables sub-microsecond latency for storage, HPC, and AI/ML workloads with minimal CPU overhead.

Q: Is GPUDirect RDMA supported for GPU cluster deployments?
A: Yes, this adapter features full GPUDirect RDMA support, enabling direct memory transfers between GPUs across nodes without passing through host CPU memory. This dramatically reduces latency in multi-GPU machine learning training and HPC applications.

Q: Can this card be virtualized for multi-tenant environments?
A: Yes, the adapter supports SR-IOV (Single Root I/O Virtualization) with up to 127+ virtual functions. Each virtual function can be assigned directly to a VM or container, providing near-bare-metal network performance with strong isolation.

Q: What cable types are compatible with the QSFP56 ports?
A: The QSFP56 ports support a wide range of cable types including passive copper DAC cables, active copper cables, and optical transceivers for SR4, LR4, and ER4 fiber connections. Maximum power delivery per port is 5W for active cables and modules.