The OSSV Matrix shows support for Windows 2008 32 and 64 bit Standard, Enterprise and Data Center, but it does not list R2 support. Is it supported on R2 and the matrix doesn't list it or is it not supported at all?
Got the answer... R2 isn't offically supported and will be with the pending OSSV 3.0 Release. A PVR should be filed for those interested in Windows 2008 R2.