VMware vSan can be called as a technology that allows locally attached disks that are installed on the server to create a clustered disk space, or as Distributed Object-Based Storage. It reduces complexity eliminating the physical storage layer.
Since vSan is embedded in the hypervisor, what you need to do is only to activate it via vSphere and a separate installation is not required.
It can be taken as vSan ReadyNode from a variety of compatible vendors and make your own installation, Also can be taken as ready-to-use solutions like Dell VxRail. You can also check whether your existing hardware is vSan compliant from here and licensing for version 6.7 here
Although the use of virtualization, which is now indispensable for information technologies, is 10 years in the x86 community, Unix/Linux users have been benefited from the older time.
So what is virtualization?
Basically, it’s a technology that improves productivity by sharing the hardware resources on the server across multiple virtual servers. For now, I’m going to go over this definition and the server special.