Where I live, a graduate with an MBBS degree (Master of Medicine, Master of Surgery) is called a doctor. To me, strictly speaking, he is a doctor only...
In computer networking, a virtual storage area network (VSAN) is a collection of ports from a set of connected Fibre Channel switches, that form a virtual fabric. Ports within a single switch can be partitioned into multiple VSANs, despite sharing hardware resources.
Host-based replication does not require the vSAN cluster to have access to the existing storage. For example: An existing vSphere cluster utilizes the source SAN or NAS datastores. A new vSphere with vSAN cluster is deployed. The new vSphere with vSAN cluster does not require access to the old SAN or NAS datastores.