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Secondary DNS Server and DC integration

By seroni1 ·
I was hoping somebody would be able to give me an idea about this scenario.

We have 3 windows 2003 servers.

#1 is just a DNS server (primary)
#2 is a DC and DHCP server
#3 is a backup DC and I want it to be a backup DNS server (specified in the ip settings of the client computers).

What I want to achieve with this scenario is that if #1 and #2 fail, #3 is able to log people in and connect to the internet.

This is what I have done so far:

Created secondary zones in #3 and loaded the records from #1. However this does not provide automatic updates so I decided to upgrade the zones from secondary to primary and store them in AD.

Questions:

1. I look at #1 and #3 DNS and they each have an SOA record for themselves? Is that normal?

2. I keep hearing people say that there is no such thing with Windows 2003 as primary or secondary dns since the records get duplicated anyway. Sure if you have all DCs be DNS servers as well. But what if one of the DNS servers is not a DC? How are the records copied back and forth? Who is the authority in this case or who should I make if I need to?

3. What happens with the DNS records being copied over to #2 which is just a DC from #3? Are they just dormant and not used or are they not copied at all?

What is the recommended way to go about this?

Thank you in advance for your time.

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