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Migrating DomainA to new hardware...

Posted on 2004-09-14
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I have a Windows Server 2003 Dell 500 server that needs to be retired. It already died once and had to do a restore to it. It is currently running Windows Server 2003 and is a PDC. It also runs Exchange 2003. The new server is a Dell 2850 running Windows Server 2003. Currenlty, the prduction server is setup as domainA.net. I setup up the new server as domainB.local. Setup the DNS so that they could see each other. Where I'm having problems is with setting up the Trusts. Part of the ADMT instructions tell you to setup a trust and put the administrator(or user who is running ADMT) of the target domain in the Administrators group of the source domain. I'm not finding any clear cut instructions on how to do this and what I did find seems to fail. It is also my understanding to migrate the workstation in the domain, I have to have the user running the ADMT of the target domain in the Local Administrators group of each of the workstations. So this still requires a visit to each workstation.

When I set the trusts up I can validate it one way but not back to the target domain. I'm also hoping that I can change the domain back to DomainA.local when the migration is finished. Instead of using the .net on the inside network.

Regards,
Brendan
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Question by:b_davies
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ColinRoyds earned 250 total points
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I would imagine that your DNS is not working correctly, I would first get this sorted out, then your trusts shouls work.
Sorry I don't feel like retyping this so I copied it from a previous question

http://www.experts-exchange.com/Operating_Systems/Windows_Server_2003/Q_21127674.html

How to setup DNS for trusts

There are two ways to do this
1.
Use a host file for name resolution
Use a lmhosts file for DC resolution, so the remote DC for the remote domain can be found.

2 In DNS of domain A on your forward lookup zone allow for unsecure communications
In the DNS for domain B, add a secondary forward lookup zone for domain A, specify domain A' DNS server address
In the DNS of domain A on the forward lookup zone allow for zone transfers (this can alos be restricted to domain B only if you want)
Then in the DNS of domain B in the new secondary zone expand the zone then right click and click transfer from master.
You should now have name resolution for domain A from domain B, do the same in revers for domain B - A.
check dns resolution using nslookup in both directions

Now setup your trust using AD D+T, and verify them

Trust done, if you used step 1 to do this you might want to now do step 2 for proper dns resolution.

The reason you cannot do 2 immediately is that DNS by default will only alow for secure comm's so if you are not on the domain you can not do a look up. Therefor as stade in step 2, if this is done before the trust is in place you MUST change the forward lookup zone to unsecure.

after this is done do the migration the use the domain rename tool to change it back to what you want
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