We have to migrate from Windows 2003 to a *nix system. I need to understand the basic concepts and then i will try it in the lab.
So if i am to move the DNS over to Linux and turn of the DNS on wondows server, will it cause any problems ?
As far as my understanding is, AD zones only help in replicating zones, so once moved over to linux will turning the DNS off on windows cause any problems ?
Details about the scenario and my plan:-
The widows DNS setup :-
- 4 Domain controllers.
- a total of 5 zones, 2 of them are AD integrated.
- DC1, DC2 and DC3 have 3 zones each. DC4 has 5.
- 34 reverse lookup zones.
The widows DHCP setup :-
- DC4 has 70 scopes
- DC3 has 50 scopes
- DC1 and DC2 have 1 scope each.
Here is what i plan to do :-
Will move the DHCP to Linux first
Reduction of lease time on windows server:-
- Stage 1: 6 hours (day before the cut over)
- Stage 2: 1 hour (night before the cut over)
- Stage 3: 20 mins (within an hour of cut over)
Network to be configured with helper addresses.
For DNS migration :-
- Will setup linux as secondary
- Zone transfer to Linux
- Disable DNS on all four DC
Reason for the move : we have Bluecat (*nix) based IPAM solution which is running DNS and DHCP for other branches of our company and now we would like to move over the windows server to those servers.