As you know, Dell announced his Cluster in a Box Solution, Dell PowerEdge VRTX (Vertex) a few weeks ago.
Now Dell shows the first reference Architectures for Hyper-V and as use case a virtualized Exchange 2013 environment.
To download the Hyper-V Whitepaper please click here.
Microsoft Hyper-V® Server 2012 Reference Architecture on Dell PowerEdge VRTX
The Exchange Whitepaper you can find here.
Microsoft Exchange® 2013 Virtualized Solution with Dell™ PowerEdge™ VRTX