From what I understand, enabling the Hyper-V role in Server 2012 virtualizes the OS and is essentially the same as running it on top of Hyper-V 2012 Server. Also, Hyper-V doesn't passthru SMART data.

Windows Server 2012 Hyper-V combines easy setup and management with new features that lower the entry barrier to highly available virtualization clusters With the release of Windows Server 2012, Hyper ...

There's no doubt Microsoft is serious about making Hyper-V a contender for enterprise virtualization and private cloud. The Windows Server 2012 release was full of new features and scalability ...