Two DCs w/DNS - how to configure primary/secondary DNS servers

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Hi all,

I am building an entirely new domain, and currently have two machines built,
both identical, with one NIC each.

I have run DCPROMO on the first machine (DC1) and set up a new domain. I
have run DCPROMO on the second machine (DC2) and made it an additional
domain controller. DNS is installed on both machines, both are Primary
AD-Integrated DNS servers.

My question is: under the NIC configuration for each server - what should I
specify as primary/secondary DNS servers? Some articles suggest pointing
each server at their counterpart for primary DNS, and at themselves for
secondary DNS e.g.:

DC1: Primary=DC2, Secondary=DC1
DC2: Primary=DC1, Secondary=DC2

Other articles suggest the opposite:

DC1: Primary=DC1, Secondary=DC2
DC2: Primary=DC2, Secondary=DC1

And other articles suggest choosing a "master" DNS server and pointing all
DCs to this for primary, and having no secondary DNS server set up, e.g:

DC1: Primary=DC1 Secondary=<none>
DC2: Primary=DC1, Secondary=<none>

Can someone offer some advice to help guide me?
Many thanks
steve


.

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