Re: Design Question - Multiple domains/2003 Migration.

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"Am I missing anything, any gotchas?"

Testing comes to mind :) What is your 5.5 topology today? Do they all
share (with the exception of Notes) the same GAL? Does that have to
continue? What about the requirements of the native mode domains (in this
case, 2000 or greater)?
I'm not sure I would have put the first server in that domain given your
organizational structure, but it's hard to tell about your environment and
how it's run exactly.

"Also, if I've forced to do the 2003 upgrade and remove 5.5 before the
4.0 TPS domain is upgraded, what are the ramifications - esp when I do
go to upgrade it to 2003 AD?"

Ramifications? It would get funky most likely. A better path is to upgrade
the domain first and then go back and upgrade to Exchange 2003. The same
path that Microsoft took to make them.

does that help?
Al




"Mark Grace" <ohiorocks@xxxxxxxxx> wrote in message
news:1135277932.188568.38620@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
> Hi All:
>
> We're about to embark on a 5.5 to 2003 Exchange migration.
>
> Currently we have 3 AD domains in one forest. These domains are
> corp.trihealth.net and gha.trihealth.net. The root domain is
> trihealth.net. There is also a NT 4.0 domain called TPS. This domain
> will eventually be in-place upgraded into the trihealth.net forest as
> tps.trihealth.net.
>
> We have 3 email servers, hosting about 3000 mailboxes, running Exchange
> 5.5. The users for these mailboxes are located in both the
> corp.trihealth.net AD domain (Windows 2003) and the Windows NT 4.0
> domain, TPS. The corp user's mailboxes are in the 5.5 container
> 'recipients'. The TPS mailboxes are in the 'TPS Recipients' container.
>
>
> The GHA domain currently uses Notes - this will eventually be migrated
> to Exchange, but not anytime soon, so it's not part of the immediate
> project.
>
> We've installed the ADC, which is currently syncing the
> corp.trihealth.net domain with the 5.5 Organization: corp.trihealth.net
> <-> 5.5 ORG/Recipients Container.
>
> These are the steps that I plan to follow next:
>
> 1. In-place upgrade TPS domain into trihealth.net forest, creating
> tps.trihealth.net.
> 2. Create ADC connection agreement to syncronize tps.trihealth.net <->
> 5.5 ORG/TPS Recipients Container.
> 3. Install first 2003 Exchange server into 5.5 ORG (We'll end up with
> 4 in a clustered configuration). All Exchange servers will be in the
> corp.trihealth.net domain.
> 4. Migrate mailboxes
> 5. Decommision 5.5 servers.
>
> Am I missing anything, any gotchas?
>
> Also, if I've forced to do the 2003 upgrade and remove 5.5 before the
> 4.0 TPS domain is upgraded, what are the ramifications - esp when I do
> go to upgrade it to 2003 AD?
>
> Thank you!
> Mark
>


.

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