Hyper-V and HP Servers – great combination !
I had done several implementations with different server hardware vendors, but HP servers are my personal favorite regards to management, availability and performance.
HP had published some very useful documentation’s for implementing Hyper-V :
Implementing Microsoft Windows Server 2008 Hyper-V™ on HP ProLiant servers
Implementing Microsoft® Windows Server® 2008 R2 on HP ProLiant servers
HP Support Matrix for Windows 2008