VMware’s DirectPath I/O allows a virtual machine to directly access a physical PCI device, such as a network adapter or GPU. This bypasses the ESXi hypervisor’s virtualization layer (the VMkernel) for that specific device, offering near-native performance. It is a crucial feature for workloads requiring high throughput or low latency, such as Network Function Virtualization (NFV) or high-performance computing.
In the intricate world of enterprise virtualization, stability is paramount. VMware vSphere serves as the beating heart of countless data centers, orchestrating compute, storage, and networking resources with precision. However, even the most robust platforms are not immune to the complexities of hardware integration and driver management. kb.vmware s article 78708
To understand the significance of this knowledge base article, one must first understand the specific feature it impacts: . VMware’s DirectPath I/O allows a virtual machine to