Exchange 2010 Tested Solutions

Looking for some Exchange 2010 well designed solutions ?! Microsoft has release examples of well-designed, cost-effective Exchange 2010 solutions deployed on hardware offered by Microsoft's server, storage, and network partners.

Single site, 500 mailboxesSingle site, 16,000 mailboxes
Two sites, 9,000 mailboxes
Two Sites, 20,000 mailboxes
Two sites, 15,000 mailboxes