Active Directory - Server 2008 R2 and 2012 R2 (Server Formatting or not productive

Question

Hello guys, I come here to try to clarify a great doubts regarding Server Operating Systems, I will attempt to detail the most of my scenario.
Suppose I have a Server 2008 R2 in production, and this is my Active Directory server (meudominio.local) and am managing through Group Policy settings my workstations that are around 60-70 computers, guys my doubts the thing is, if I need some time to format
and perform a fresh installation of my server as it will be my Active Directory? Of course I will have lost my domain controller and I have to accomplish the placement of each workstation again that enters my domain one by one.
I know there is the option of AD replication, so we call the Active Directory, even for another version of the Operating System, prátia already realized this, but it most often comes not functioning properly, done without replication problems Server 2003 to
2008 R2.
Guys like to know a solution to not having to put my plants in my domain network again one by one, is there any way to backup so that when I reinstalled the system and the AD again in my server stations return to "see" again that server as your domain
controller, even me installing AD with the same domain name before this formatting stations do not respond to this driver in this case do the Network ID or add the station to the area again, so she creates a new user profile for example (Max.meudominio) while
your old profile "guy" still remains on the machine, I adopted the practice of editing the record of this newly created profile and pointing him well for the old user folder which contains all data and settings, eg edit my key "ProfileImagePath"
regedit logged in with the newly created profile (Max.meudominio) ->
(switch "ProfileImagePath" C:\Users\Max.meudominio) thus pointing to the folder before replacing in the field again this season after formatted server, thus ->
(Switch "ProfileImagePath" C:\Users\Max), detail that we give permission for all such user "C:\Users\Max" folder, after that restart the computer and he comes back with the user profile and all your settings.
I wonder if there is another method to perform this procedure, do not know even a backup AD to not have to replace all the seasons again "meudominio.local".
Thank you for your attention!
Translation with Google translator! Sorry.
Matias Duarte Coordenador de Suporte Dual Solucoes® | Soluções em tecnologia da informação

Answer 1

As the practice of replication I know her mostly said she has some flaws when I do the replication of my domain to another server but it works correctly, so having a server "master" and the other ServidorBKP as "slave", in redundancy,
the problem is when I say, and put the "ServidorBKP" being my primary domain controller and disabling my main controller, to disable or turn off my main controller the stations themselves are unable to login because it does not communicate with the
my ServidorBKP "slave" even I put it as the main driver of course.
Regarding the System State as far as I know this option existed in Server 2003.
I also got some information, confer on the links below.
http://msdn.microsoft.com/en-us/library/bb727048.aspx
http://technet.microsoft.com/pt-br/library/cc758435(v=ws.10).aspx
http://technet.microsoft.com/en-us/library/cc961934.aspx
I'm still researching other ways, getting communicate any news to everyone. (Google Translate)
Matias Duarte Coordenador de T.I. Dual Solucoes® | Soluções em tecnologia da informação http://www.matiasduarte.com.br