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Chapter 2. Active Directory and DNS > Configuring DNS Zones
Configuring DNS Zones
Each DNS name server stores information about a discrete portion of the Internet namespace. Such a portion is known as a zone, and the DNS server that is primarily responsible for each zone is considered to be authoritative for that zone. In other words, the DNS server is the main source of information regarding the Internet addresses contained within the zone. A zone can be considered part of the big database that is DNS and can contain information on one or more AD DS domains. Zones are defined by who looks after maintaining the records that they contain. In Windows Server 2008, DNS stores its zone data in one or more application directory partitions, each of which is an AD DS partition that contains application-specific data (in this case, DNS) that needs to be replicated throughout specified portions of the forest.
Note
A read-only domain controller (RODC) can host the DNS service, but all its zones are configured as read-only. In other words, it cannot process client updates. A client attempting to update its DNS records is returned a referral to a DNS server that is capable of processing the updates.
