BTW, if Dell try for a "not supported" again, you can point them to
http://en.community.dell.com/techcenter/b/techcenter/archive/2013/01/03/announcing-the-release-of-red-hat-enterprise-rhev-3-1-on-dell-poweredge-servers.aspx
They have a similar announcement for 3.0:
http://en.community.dell.com/techcenter/b/techcenter/archive/2012/07/13/red-hat-enterprise-virtualization-rhev-3-0-works-on-dell-poweredge-servers.aspx though worded slightly differently