VMware Virtual SAN Ready Node (vSAN Ready Node)

A VMware Virtual SAN Ready Node (vSAN Ready Node) is an original equipment manufacturer (OEM) network appliance that is certified to run VMware vSAN. 

vSAN Ready Nodes are hyper-converged nodes, meaning that they are designed from scratch to support VMware vSAN. Ready Nodes come in a variety of configurations, offering different operating systems, CPUs,  I/O controllers, hard disk drives, solid-state drives, network interface cards (NICs) and other hardware components designed to meet VMware's requirements for the vSphere software-defined storage feature. As of this writing, Dell, Fujitsu, Hewlett Packard (HP) and SuperMicro all offer vSAN Ready Nodes.