NFS is a client/server system that allows users to access files across a network and treat them as if they reside in a local file directory. With an NFS implementation, you’re working with a single file system provisioning additional VM images. NFS makes life so much easier for the storage and VMware administrator and there is little, if any, performance penalty. In time, in time NFS will become the predominant protocol for VMware deployments because it makes life easier for VMware and storage administrators.”]
Source: https://www.darkreading.com/database-security/nfs-saved-by-vmware-