Hello Dunc,
Only have to add that the second DC should also become Global catalog server.
And i second Florian to have at least 2 DC/DNS/GC per domain for failover
and redundancy.
Best regards
Meinolf Weber
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> Hi,
>
> I'm trying to migrate from Windows 2008/32 to 2008r2/64 in a single-
> server environment, which requires a clean install where the PDC
> machine is currently has file sharing, active directory and DNS roles.
> While I believe I can install over top of the current OS and rebuild
> the file sharing systems, I'm worried about losing all my users and AD
> objects.
>
> What I've done is build a secondary machine on Windows 2008/32,
> promoted it to AD, and installed the DNS role. When I go into the AD
> MMC snap-in, it's listing all my users as I would expect. If I now do
> a clean install on my primary machine, can I run dcpromo and point to
> my new secondary machine to rebuild the AD tree? Or do I have to set
> the properties of the operational masters so my secondary machine is
> the operational master, and if so what are the implications for my
> domain users?
>
> Or is there something else I need to do?
>
> Thanks in advance!
>