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rand1964
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To Migrate or not Migrate A tale of two networks

I need some advice on how to proceed.

We current have a flat network that is at Windows 2008 Domain Level and sadly we are running an Exchange 2003 server.

We are building a new network in a new datacenter that will be all virtual, using VMware and Windows Server 2012 Datacenter and Exchange 2013 (there's more, but that's our core Active Directory stuff)

I need opinion on how to approach getting the users onto the new network and the best way to transition over.  I also want to ensure that my Active Directory is clean and free of any old artifacts and any potentially bad objects because we were hacked.

 I have these approaches considered:

1.  New network, new Domain controllers built from scratch up.  Name the domain controllers the same as the current network and export AD data and import it into the new Domain....will the existing workstations see the new domain controller as the same old one?

2.  Keep the existing Domain and Active directory structure, bring up new Domain Controllers on the new network as extra domain controllers and eventually transfer the Roles to the new virtual ones.

3.  Set up the new Domain Controllers with completely different names and Domain names and use some kind of "Trust" to move AD objects that we want over.

This is really driving me nuts...I don't have any experience in something like this.
Active DirectoryWindows Networking

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Sarang Tinguria

8/22/2022 - Mon
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Cliff Galiher

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rand1964

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So there's no way to slowly transition to the new network?  We thought we might be able to get the domain controllers setup and the email servers, have the existing workstations actually using the new Active directory, DNS, DHCP while we slowly move / migrate each remaining server over to the new virtual network?

Sounds like there is no way to do that?  Is the only way to setup the the new network from scratch and just "flip the switch" one weekend and everybody moves to the new network?
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Sarang Tinguria

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rand1964

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Can I clean Active Directory data by exporting it to a spreadsheet and deleting anything I don't want and be assured that it is clean and import it into a new Domain Controller...mostly talking Users and Computers????

Will this work?
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