I see the minimum of 32GB for Server 2008 itself, but what is the minimum that I should use. One server will house Server 2008 with Exchanger CAS/HUB role and the other with Server 2008 with the Mailbox role.
With patches, anti-virus, what's the minimum I can get away with on a VM? We're debating 2 seperate LUNs to present to the VM-- one with the OS and the other with the applications.
http://www.msexchange.org/articles-tutorials/exchange-server-2007/planning-architecture/exchange-2007-sizing-cheat-sheet.html