we have a cool Problem with our ESX Farm. We have added two new Hosts in our Farm. The new hosts has E5-2650 CPU´s and the old hosts Xeon 5690. Vmotion runs without problems from the old hosts to the new hosts and from new hosts to the old hosts with evc mode Penryn.
Now had problems with the Vcenter and we installed an new Vcenter Server on a pysical hardware with Vcenter 5.0 U1b. Now we have the problem vmotion runs only from the old to the new hosts. I cannot activate the EVC mode because it says the new hosts are the problem.