RHEV 3.6 VirtIO Back Data plane activaiton for dummys

Hello dear RHEV Guru team,

I m looking to enable VirtIO Back Data plane on Each disk (Hypervisor RHEV 3.6 using only local storage mode (SSD))
I m not able to find something recent (3.6) to enable this for a noob like me...if some one can help me
Other point, can you confirm that live migration is supported in 3.6 (the underlying SSD storage is replicated)