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DCs and DNS settings

Hi Experts,

I have to install some new DCs in to a network.
The old DCs should be deleted afterwards.

When I setup the new DCs, lets say the new PDC with all FSMO roles, how to setup the DNS servers ?

What is the best practice for the DNS servers ?
Lets say I have two new DCs in a cluster.
DC1 and DC2. What about the network settings for DNS ?

What I know the first DNS is always the other DC, in this case DC2.
On DC2 the first entry is always DC1.

Please let me know your Expertise please.

ASKER CERTIFIED SOLUTION

Hayes Jupe

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M A

Shutdown the 1st DC and assign the old IP as additional IP to the new DC. Remove DNS registration.
https://www.daktronics.com/support/kb/Pages/DD1990270.aspx
https://docs.oracle.com/en/database/oracle/oracle-database/18/cwwin/deconfigure-dns-registration-for-public-network-adapter.html#GUID-B260F4D3-EF0B-4D22-8862-23A3CA7EE82B
If everything works as expected, start the server after couple of days and remove the additional IP and demote the DC.
And you can assign the IP back.

Hello There

Don't forget to update entries on the DHCP server Scope Options, on the router, switches....

Eprs_Admin

ASKER

Thanks.
But it is not needed to swap IP addresses.
The new DCs have also new IPs.

I will go for this:
- DC3 should use DC4 as primary DNS and itself as secondary
- DC4 should use DC3 as primary DNS and itself as secondary
- You can then demote DC1 and DC2 at your leisure...
- Don't forget to update entries on the DHCP server Scope Options, on the router, switches...

:-)