Domain Controllers & DNS
I currently have 2 domain controllers. One is physical Server 2008 SP2 and holds all 5 FSMO roles. The other is also Server 2008 SP2 and is virtual.
I just installed Server 2012 R2 domain controller and performed the necessary forestprep, and domainprep functions.
My goal is to move the FSMO roles to the new physical Server 2012 R2 domain controller, and decomission the physical Server 2008 DC.
Regarding DNS - Currently while all 3 DC's are up and running what DNS servers should they be pointing to?
Should their Primary DNS server be themselves and the secondary be the DC holding the FSMO roles? Or should they be pointing primary to FSMO Server and secondary to themselves?
Thank you in advance.
I just installed Server 2012 R2 domain controller and performed the necessary forestprep, and domainprep functions.
My goal is to move the FSMO roles to the new physical Server 2012 R2 domain controller, and decomission the physical Server 2008 DC.
Regarding DNS - Currently while all 3 DC's are up and running what DNS servers should they be pointing to?
Should their Primary DNS server be themselves and the secondary be the DC holding the FSMO roles? Or should they be pointing primary to FSMO Server and secondary to themselves?
Thank you in advance.
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Mohammed Khawaja
Each server should be pointing to itself for primary DNS and to a different server for secondary DNS. This will ensure DC functionality even if other DC is not available. At one point, this was considered DNS island and was not recommended but now this is the recommendation from MS.
Excellent Comments. I have seen many opinions on this matter, but this seems to be the correct one. Thank you.