I have added a new host to my oVirt 3.5.0 and it has been added but when the installation finish the host remain in "Not operational state". The error in the engine.log file is that "CPU_TYPE_INCOMPATIBLE_WITH_CLUSTER". The host is a little old. I'm attaching part of the "lshw" host information and the engine.log files. I know that this host is not able to virtualize 64 bits VMs which it is possible to do it by the other four hosts.