Architecting VMware vSAN 6.2 : vSAN Design Overview : 5.6 vSAN Requirements
   
5.6 vSAN Requirements
5.6.1 vSphere Requirements
vSAN requires vCenter Server. Both the Microsoft Windows version of vCenter Server and the VMware vCenter Server Applianceā„¢ can manage vSAN enabled clusters. vSAN is configurable and monitored exclusively from only VMware vSphere Web Client.
vSAN requires a minimum of three vSphere hosts contributing local storage capacity to form a supported cluster (with the exception of ROBO clusters). The minimum, three-host, configuration enables the cluster to meet the lowest availability requirement of tolerating at least one host, disk, or network failure. However, the recommended minimum number of hosts for a production cluster is four nodes.
To enable vSAN 6.2 and to benefit from the features described in this document, the vSphere hosts require vSphere version 6.0 Update 2.