Install your own NFS ESXI storage server

Why Recently I was building a VMware ESXI cluster, aka Vsphere. We all know that Vsphere clusters require separate storage so that ESXI hosts can migrate virtual machines between multiple hosts. There are professional solutions like Dell PowerStore. However, those machines are really really expensive. I guess about 20,000 USD. So how can we get a similar solution as an ESXI storage server with  …