I have 2 domain controllers (Windows 2008 and Windows 2012 R2) running at each site (3 sites total in my network), both running with AD-integrated DNS zone for the domain. My plan is to decommission the old Windows 2008 DC by uninstall ADDS and then DNS roles from this server. Based on my understanding, I need to run "dcpromp" which will remove domain controller and uninstall any AD-integrated zone.
Per technet, "After AD DS is removed, the DNS server role remains installed and running if it was previously installed on the domain controller. But any Active Directory–integrated DNS zones that were installed are removed. By default, the AD DS removal process also attempts to remove the Domain Name System (DNS) delegations for the zones that point to the domain controller."
My concern is that if I have other DNS servers running for the AD-integrated zone (since they are replicated by AD), is there anything I need to worry? The DNS service will not be affected right (since I have other servers running DNS).
I am just trying to be a litte bit more caution. If something goes bad, there is no way to undo it. Can someone confirm with me please?