Integrated and non-integrated dns zones in windows server 2008r2

integrated and non-integrated dns zones in windows server 2008r2 by MSFTWebCast

DNS integration with Active Directory
- Active Directory and Domain Name System (DNS) have the same hierarchical structure.
- DNS zones can be stored in Active Directory.
- Active Directory uses DNS as a locator service, resolving Active Directory domain, site, and service names to an IP address.

Benefits of using Integrated DNS
you can convert configure primary DNS server to an Active Directory Integrated Primary server and configure another domain controller to be a DNS server. With integrated primary servers, all the servers are primary servers, so when a zone change is made at one server, it is replicated to the others, eliminating the requirement for a zone transfer.