This VMware Validated Design relies on both vSAN storage and NFS storage. The "Shared Storage Design" section explains where the SDDC uses which type of storage and gives background information. The focus of this section is physical storage design.
vSAN Physical Design Software-defined storage is a key technology in the SDDC. This design uses VMware Virtual SAN (vSAN) to implement software-defined storage for the management clusters.
Hardware Considerations You can build your own VMware vSAN cluster or choose from a list of vSAN Ready Nodes.
I/O Controllers The I/O controllers are as important to a VMware vSAN configuration as the selection of disk drives. vSAN supports SAS, SATA, and SCSI adapters in either pass-through or RAID 0 mode. vSAN supports multiple controllers per host.
NFS Physical Storage Design Network File System (NFS) is a distributed file system protocol that allows a user on a client computer to access files over a network much like local storage is accessed. In this case the client computer is an ESXi host, and the storage is provided by a NFS-capable external storage array.