Migrating from DHCP 2003 to DHCP 2012

Hi,
i'm planning to migrate from DHCP 2003 to DHCP 2012 or DHCP 2012 R2 failover.
Saw those instructions:
extract the configuration in .TXT
netsh dhcp server export c:\temp\dhcp.txt all
copy this file on your server 2012 in temp or elsewhere
import the configuration with this command
netsh dhcp server import c:\temp\dhcp.txt all
if you have the error "TLS supported but not configured"
remove all the option in "Server Option" like 003 Router 006 DNS SERVERS and put it back after doing the import
now i have some questions:
1. is it recommended to build 2 2012 DHCP configured as failover on virtual machines ? (hyper-V)
2. do those dhcp servers have to or recommended to be DNS also or can they be only DHCP servers ?
3. my AD functionality level is 2003 - is it a problem for this migration ?
4. virtual or physical ? whats is recommended ?
5. any other considerations ?
TNX

Hi,
Virtual or physical will both work. It doesn't matter, as long as the two servers can communicate with each other.
You do not need DNS installed on the same server, but you can install it without hurting anything.
I believe that the AD level has no effect because you can have DHCP failover even on workgroup computers.
-Greg
http://technet.microsoft.com/en-us/library/dn338983.aspx#specs

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===========================================================
Hi All,
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