adding a 2008 domain controller to an existing 2003 domain environment

Hey there,

I have a current server 2003 active directory domain setup with 5 DC's across myltiple physical locations, all tied together and replaicating fine

I have a new server I am adding to the domain, it is a server 2008 unit.  I went to DC promo the unit to the domain, and I got a message that i had to adprep /forestprep from the 2008 server tools CD on the 2003 before I could promote this unit to AD controller.

What am in for during this process?  Do I just go ahead and start doing adprep /forestprep on the other DC's one by one and it is pretty straight forward?  What downtime will be expected?

Thank you
bcameron70Asked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

 
Glen KnightCommented:
There is no downtime and I am yet to find one that fails.

If the server disk is 2008 R2 and the current DC's are 2003 32bit then you need to run adprep32 instead of adprep
0
 
Lee W, MVPTechnology and Business Process AdvisorCommented:
Yes, it's pretty straight forward - I would ALWAYS recommend a backup before doing so (of all DCs, backing up the FSMO master(s) LAST) just to be safe (I've never seen a problem but there's a first time for everything).

And then you have to ADPREP the domain on the correct DCs.

See:
http://www.petri.co.il/windows-server-2008-adprep.htm (excerpt below)
ADPREP /forestprep must be run on the Schema Master of a forest and under the credentials of someone in the Schema Admins and Enterprise Admins groups.

ADPREP /domainprep must be run on the Infrastructure Master of a domain and under the credentials of someone in the Domain Admins group.
0

Experts Exchange Solution brought to you by ConnectWise

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
 
Lee W, MVPTechnology and Business Process AdvisorCommented:
Note, you may be warned about Read-Only DCs - if you don't expect to have any, then you need not worry about it... and if you change your mind later, you can always run the ADPREP for read-only DCs later.
0
 
bcameron70Author Commented:
Thank you! Just what I was looking for!
0
Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

All Courses

From novice to tech pro — start learning today.