upgrade from 2003 to 2012 server

Hi, had asked similar question on this but it was going from 2003 to 2008.  We want to replace our current 2003 server which is a domain controller and primary dns server as well as holding several fsmo roles.  The new server we are ordering only comes with 2012 so is this possible to transfer the fsmo roles from the 2003 to 2012 server?  We are still on  a 2003 domain but we have 4 2008 servers with 3 2003 servers still active.  Thanks.
dankyle67Asked:
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it_saigeDeveloperCommented:
@Seth: I completely forgot about the AD Prep completing auto-*magically* from the Role installation.

@dankyle67, these are the steps for the process:

http://blogs.technet.com/b/canitpro/archive/2013/05/05/step-by-step-adding-a-windows-server-2012-domain-controller-to-an-existing-windows-2003-network.aspx

-saige-
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it_saigeDeveloperCommented:
Yes. It is possible to transfer the FSMO roles.  Other than running ADPREP32 on the current FSMO holder.  You should not need to do anything else, unless your Active Directory and/or Forest Functional levels are at Windows 2000.  Then you should raise them to Windows Server 2003.

http://technet.microsoft.com/library/understanding-active-directory-functional-levels(WS.10).aspx

-saige-
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Seth SimmonsSr. Systems AdministratorCommented:
in addition, here is how to transfer the fsmo roles once you got your 2012 server promoted

Using Ntdsutil.exe to transfer or seize FSMO roles to a domain controller
https://support2.microsoft.com/kb/255504/en-us
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If your organization has a need to mass-create AD user accounts, watch this video to see how its done without the need for scripting or other unnecessary complexities.

 
dankyle67Author Commented:
i plan to retire the current 2003 server from the network once I have transferred the fsmo roles to the new 2012 server so would I still need to run that adprep on the 2003 server?
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Seth SimmonsSr. Systems AdministratorCommented:
yes because the AD schema still needs to be extended to allow for 2012 domain controller; it is a one-time process
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it_saigeDeveloperCommented:
Yes.  Active Directory is, after all, a database and the 2012 Domain Controller uses a newer version of the database.  I don't immediately recall the version of the database.

-saige-
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it_saigeDeveloperCommented:
Found a reference to the Schema versions:

http://adisfun.blogspot.com/2012/09/windows-2012-ad-schema-version.html

Reiterating what Seth just posted, it is a one-time process.

-saige-
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it_saigeDeveloperCommented:
Here is Microsoft's TID on Running ADPREP.

http://technet.microsoft.com/en-us/library/dd464018(v=ws.10).aspx

-saige-
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dankyle67Author Commented:
Thanks for all the informative stuff so far, I'm just relieved that it can be done. So after the transfer of roles to the 2012 server, can I just leave the domain as 2003? After running adprep as you instructed.
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Seth SimmonsSr. Systems AdministratorCommented:
yes, the functional level can stay at 2003
you won't be able to raise it higher until the 2003 domain controller is demoted
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it_saigeDeveloperCommented:
Should specify *all* 2003 domain controller(s) are demoted, in case you have many.

-saige-
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dankyle67Author Commented:
Thanks for the clarification. In quickly reviewing the steps for adprep it listed switches like adprep /forestprep. We only have the 1 domain so will running adprep without any switches be ok or do I have to run all those prep switches?
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Seth SimmonsSr. Systems AdministratorCommented:
yes you have to use those switches
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Seth SimmonsSr. Systems AdministratorCommented:
doing manually isn't required though since when you install the ADDS role on the 2012 server and promote it, it will take care of the schema prep for you
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dankyle67Author Commented:
Had another thought about the other 2003 servers we have on the domain that are also domain controllers. We have 2 in addition to the one currently holding the fsmo roles. I'm assuming I will have to run adprep on those 2 domain controllers as well? Was thinking of demoting one of them actually so would only need to run adprep on just one more.
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Seth SimmonsSr. Systems AdministratorCommented:
no...extending the schema is a one-time process
once it's extended, you can promote your 2012 server(s)
no need to do it again
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dankyle67Author Commented:
I've learned the hard way that doing things in the correct sequence will keep things from getting more complicated so could you give me the order in which to go about the process? In other words, do I promote the 2012 server first then run adprep? What is the AADDS role for 2012 server?
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Seth SimmonsSr. Systems AdministratorCommented:
you can put your 2012 server on the domain and, through server manager, go to add roles and features and add the Active Directory Domain Services role.  There will be an option to run the wizard to make a domain controller.

this article has screenshots

Introducing the first Windows Server 2012 Domain Controller
http://blogs.technet.com/b/askpfeplat/archive/2012/09/03/introducing-the-first-windows-server-2012-domain-controller.aspx
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dankyle67Author Commented:
Perfect guys, thanks again for all the help.
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