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Help with AD server migration

By Chris.Zelle ·
I am looking to move two servers from one AD domain to another. One server is a member server and one is a DC that run DNS and DHCP. I planned on demoting the DC, moving it with ADMT and then promoting it back to a DC in the new domain. What issues should I be aware of? Any help would be much appreciated.

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Help with AD server migration

by Rabbit_Runner In reply to Help with AD server migra ...

Hi, Lets take each server separately......\
1. 'Member Server', Simply remove this server from the current domain and place it into a workgroup. Then physically move the system and add it to the new domain.
2. For this answer, I am assuming that you want to keep both Domains and are simply moving two servers. If this is not correct, then the following answer will not apply.
a. Since the DC that you want to move is DNS and DHCP server, you will need to move these services to another serverin the first domain. All workstations will need to point to the new DNS server. Also, with DHCP you will need to either move your current 'scope' or create and activate a new one on another server, plus turning off the current scope. Once all clients are pulling their lease from the new DHCP server, you can deactivate DHCP on the current DC.
b. Now run DC Promo on this DC and make it a member server.
c. Check in your current AD to make certain that this old DC is no longer listed as a domain controller. Check in your DNS also to make certain it is not listed in your _msdcs, _sites, _udp, and _tcp zones. If it is not, then you are good-to-go.
d. Now take this server off the domain and place it in a workgroup.
e. Move the computer to the new domain and make it a member server.
f. Since you want to make it a DC in the second domain, run DC Promo.
g. From this point you can add, or not add, DNS or DHCP. It will be entirely up to you.

Hope this helps.

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