The models of BlueField DPUs I’ve worked with have no storage (aside from eMMC to boot the DPU) directly attached. They typically run SPDK, then SPDK block devi

The models of BlueField DPUs I’ve worked with have no storage (aside from eMMC to boot the DPU) directly attached. They typically run SPDK, then SPDK block devices are presented to the host as NVMe namespaces or virtio-blk devices. If using NVMe-oF with RDMA, this can provide a zero copy IO path to remote storage. For NVMe, the devices may be presented to the host as PFs or VFs. I assume but do not know that it would be the same for virtio devices.