[ovirt-users] New member and first question...

Hello, I'm French, I work for the French administration and this is my first message on this list... At the moment, we use VMware (vSphere 5.1/5.5, cloud edition) for our virtualized complex infrastructures. I've discovered recently that oVirt offers enhanced features, closed to the ones of VMware. Is the product sufficiently advanced yet ? I don't know and I hope you'll be able to help me ;-) My first question is about hypervisor... In VMware infrastructures, we use a microkernel since the version 4 (before, it was an hypervisor based on a RedHat core). On the oVirt site, I can download ovirt-engine to install it over Debian/RedHat/CentOS, etc... But it seems to be less optimised because some ressources are used by the underlying OS... Can you explain me differences between this technology and the VMware one ? Thank you. David.