ADMT Intra Forest migration questions
Posted on 2016-11-09
Hi All, I am working on a domain migration. In the past I have used ADMT. I am familiar with the setup and use of ADMT from previous migrations, and am comfortable with the process of migrating groups, users, and computers from an old forest to a new forest.
The process works well, since I can migrate all groups and users in advance since ADMT copies them over. They still exist on the source domain. This allows me to migrate everything over at once, then I can work on smaller groups of computers at a time. For example, I can migrate over 1000 users and 200 groups, and the users can still actively work on their source domain. Once I migrate their computer from source to target domain, the next day they are logging in to the target. This I would do in groups of about 25 computers.
I am now working on an intra-forest migration from one domain to the other. I was not aware ADMT 'moves' accounts and groups rather than 'copies' them until my first test user on the environment. This was shocking to me, seeing the account deleted from source domain.
To specify the exact setup, the envinroment is as follows:
Target / New domain: somename.targetdomain.com
Source / Old domain: sourcedomain.com
There is a two way Tree Root transitive trust set up between the two.
Is there a way around this with intra forest migrations? I am looking for suggestions on how to go about the migration process now for thousands of users, since my original plan I have used in the past for inter forest migrations will not work in this scenario. Thanks in advance.