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How to merge AD domainB into domainA ?

Posted on 2016-08-26
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Last Modified: 2016-10-15
We have a newly-acquired company with an AD domain, say domainB. We have a site-to-site VPN between domainB and the HQ domain - domainA, and also established bi-directional trust relationship between the two forests. Both are in Win 2003 AD level.
We want to merge/integrate/consolidate domainB's AD user accounts into domainA and hope if possible the security/sharing permission etc will also be transferred. How to do that?
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Question by:Castlewood
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FOX earned 672 total points
ID: 41771996
You will want to use ActiveDirectoryMigrationTool.  
https://technet.microsoft.com/en-us/library/cc974384(v=ws.10).aspx
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by:bbao
bbao earned 664 total points
ID: 41771999
it needs to be well planned both on paper and in a provision environment. heaps of things are to be considered.

a good start is from here:

http://m.windowsitpro.com/windows-server/plan-and-execute-active-directory-merger-part-1
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by:Zenvenky
Zenvenky earned 664 total points
ID: 41795248
You have 1 free tool from Microsoft called ADMT (AD Migration Tool) and the other one requires some budget to buy this tool, it is called Dell Migration Manager for AD. As trust already established you don't have to do much of home work to start migration. However I would suggest create test environment and test one of the tool as per your requirement.

DMM User Guide
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