Proper steps to remove a secondary DNS server

Question

_{Wednesday, May 28, 2014 12:11 PM}

I have 3 DNS servers....

1) Main DNS running on 2012 AD server

2) AD Integrated DNS running on a 2003 AD server

3) Secondary DNS running on a 2003 print server

I want to retire the print server and build a new 2012 AD server.  This new server will replace the 2003 AD server once it is up and running correctly.  How do I remove the secondary DNS running on the print server before I wipe it out?  All references to this DNS would need to be removed from AD.

All replies (6)

_{Wednesday, May 28, 2014 2:24 PM ✅Answered}

Hi

I think you should try this:

First remove it from DHCP scopes if it’s configured as DNS or WINS server. Wait for all of the clients to get new address not sure how long you leases the addresses. On the machines which has static IP make sure you remove it from those machines. When most of the machine has the new address just stop the DNS Server Services for couple of days and check for any alarms.

If no alarms just uninstall the DNS role.

Thanks

_{Wednesday, May 28, 2014 2:34 PM ✅Answered}

In addition to Muhammad's recommendation, you'll want to remove references to the secondary DNS server in both the Name Servers & Zone Transfers tab on the Forward lookup zone and any Reverse Lookup zones. To be specific, this can be done via the DNS console on either of the AD DS servers running DNS.

_{Wednesday, May 28, 2014 3:11 PM}

The IP address of this DNS server is listed as the third DNS address.  It's in my DHCP scope as the third and on my static IP machines as the third.  I was planning on giving the new AD/DNS server the same IP so I thought it would be okay to leave it as the third while the work is being done.  Would this be okay?

_{Wednesday, May 28, 2014 3:36 PM}

The IP address of this DNS server is listed as the third DNS address.  It's in my DHCP scope as the third and on my static IP machines as the third.  I was planning on giving the new AD/DNS server the same IP so I thought it would be okay to leave it as the third while the work is being done.  Would this be okay?

I think it should be fine but this still introduces a certain (more than 0%) amount of risk.  That risk can be lessened by decreasing the amount of time between decommissioning the print server and standing up the new DC/DNS server. 

_{Wednesday, May 28, 2014 3:52 PM}

I think it should be ok. Are you going to use same hostname for new server?

_{Thursday, May 29, 2014 1:37 PM}

No. The new server is going to have a new name.  I'll be sure that the Name Servers and Zones get the new name once it is built.