Comment by quietsegfault

I too ran a large VDI, server, and scientific computing cluster based on Linux - libvirt in my case. I saved a bunch of money over VMware. When I quit to go to a higher paying job, they had to rip and replace everything with vSphere because they couldn't find anyone willing to work for .edu money with the skills to manage that despite the massive cost savings.

I had asked for vSphere to avoid this problem, and they balked at the licensing costs even in the good ol' days.