The architecture of the physical layers must support modular infrastructure for compute, networking, and storage. Figure 1. Physical Layer Workload Domain ArchitectureA workload domain consists of VMware ESXi hosts managed by a single VMware vCenter Server instance, storage for workload data, and network equipment to connect to the data center. Network ArchitectureYou can implement the switch fabric at the physical layer by providing Layer 2 or Layer 3 transport services. For a scalable and vendor-neutral data solution, use a Layer 3 transport. Storage ArchitectureVMware vSAN is used in both management and compute workload domains to provide highly available shared storage to vSphere clusters. Parent topic: Architecture Overview