It's legacy free in the sense that it doesn't do paravirt like Xen and requires hardware assistance like KVM. Maybe also that it doesn't use QEMU which has som

It's legacy free in the sense that it doesn't do paravirt like Xen and requires hardware assistance like KVM. Maybe also that it doesn't use QEMU which has some pros and cons: http://www.slideshare.net/syuu1228/implements-bios-emulation-support-for-b-hy-ve-a-bsd-hypervisor http://www.slideshare.net/syuu1228/implements-bios-emulation.... Ultimately, it will let people like NetApp use it on their filers without any GPL complications though. In all other respects, it's still in its infancy and I wouldn't expect KVM parity for common use cases until the next release. I'm more excited about the VIMAGE stuff in 10.