Comment Re:Opinion (Score 1) 74
Beware!
There ARE things that can't be done under virtualbox... Maybe, yet.
First one that comes to mind is mildly esoteric... PCI pass through.
This allows a VM to have full control of hardware elements of the virtualization host.
This is how Nutanix does it's storage "magic"... A VM is given control of the majority of the storage controllers on the host.
Nutanix is KVM/qemu/libvirt under the hood. PCI pass through is inherent with that mix.
Not at Nutanix, but I've also seen network controllers and GPU/video controllers dedicated to a VM this way.