AD Migration of two Domains (Company A buy Company B) - Hints & Infos?

Dear all

i would like to get some helpful infos for an upcoming discussion regarding the migration of two companies into one (AD, Exchange, FileServices, etc).

Situation: Company(A) which will remain as it is, did buy Company(B).
They have an Exchange Server (about 150 Users), AD FileServers, cifs file share on an storage system, Workstations, etc. The usual IT stuff.

At the end scenario all users from Company B needs to be integrated into our Company with AD Accounts, Mailboxes, etc.

Is there a best practice way to integrate all the mailboxes, ad accounts, group membership, etc. into our domain?

I was thinking about to establish an AD trust between the two domains and migrate the users via ADMT.  All Users of Company-B will anyway get an new workstation with our build so i don't care about this, also all the network stuff i don't care - because we will get rid of it as some point and just use ours.  I just like to know some possible scenarios to migrate all the Users and Mailboxes into our Systems relative painless. The migration should be finished within three months.

May some guys here already did that and can give me some hints, ideas / facts? Links to good documents?

thanks in advance!
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

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.

Mike KlineCommented:
The ADMT white paper is the first place you want to check out

It is long but has a lot of great information.  

The exchange team had a good writeup on the mailbox moves with Exchange 2010

I have not done it with a E2K10 migration yet.  Try to have the users offload as much mail as they can to a PST so you have less data to migrate for exchagne.



Experts Exchange Solution brought to you by

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
digifineEFXAuthor Commented:
Hi, thanks for the comment - yes, looks like i going as I mentioned in my question with admt tool ...
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
IT Administration

From novice to tech pro — start learning today.