Greetings. I'll be introducing our first Windows Server 2012 R2 into our domain soon. I've already asked a question about transferring all FSMO roles to this server, but I wanted to follow up with some additional questions.
1. I know that all DCs run DNS, so other than changing the settings in the DHCP scope and manually updating hardcoded DNS settings on servers, is there anything different with DNS on a 2012 R2 vs. 2008 R2 server ? Can the two coexist as multiple DNS servers ?
2. In the unlikely event that the 2012 server crashes completely (or mostly), can the FSMO roles be transferred back and forth between 2012 R2 and 2008 R2 servers (or be seized by a 2008 server) as easily as they can between like-OS servers ?
3. Any other "gotchas" with introducing the first 2012 R2 server as a DC in a Windows 2008 R2 environment would be much appreciated.