Want to run Mac OS X in your VMware ESXi infrastructure? It needs to be on Apple branded hardware. With the death of the Xserve, what's a data center to do? Mac Pro is way too much of a space hog for racks. Enter the Mac mini. Sure, no ECC ram, no IPMI, no dual power supplies, etc. However, licensing requirements are pushing this change. If Mac OS X could be legally virtualized on non-Apple branded hardware, I guarantee there would be many fewer Mac mini servers in the data center.