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Zone Replication Scope best practice

We have:

1 2003 DC with DNS (which I'd like to eventually DCPromo and remove from network considering it's age)
1 2008 R2 with DNS (computers will begin to point to this once the leases expire, the office has been closed today) and DHCP that will ultimately take over waht the old 2003 DC was doing (doing so mostly now)

What option should I chose for zone replication:

To All DNS servers running on DC in this forrest
To All DNS servers running on DC in this domain
To all DC in this DC (currently set at)

Does it matter I will evetually only have DNS on one box? Should I not do that?
DNSWindows Server 2008Windows Server 2003

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8/22/2022 - Mon

oh - both have AD but I'm assuming that's already known

What is your domain structure?  Do you have a parent/child or just parent?

Since you have so few DC's I would choose replicate to all DNS servers in domain 'domain.com'.

As a side note, you should always have two DCs and two DNS servers to provide fault tolerance for AD.  If you are going to decommission the other 2003 DC then you should promote another 2008 server and install DNS on it.

All parent - no child.

And I was starting to think the same thing - might even keep this old DC up since it's working anyway
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Awesome! Thanks!