With application partitions, you can configure Active Directory to rep-licate DNS data only between the domain controllers running the DNS server in anydomain of the forest. To help facilitate the transition from domain-based storage ofzones to application partitions, Microsoft provides a couple of default DNS applica-tion partitions: one default DNS application partition for each domain in a forest andone for the forest itself. During the installation of a new Windows Server 2003 ActiveDirectory forest, these partitions are created automatically and AD-integrated zonesare stored there. If you upgrade from Windows 2000, the default DNS applicationpartitions are still created automatically, but existing AD-integrated zones are notmoved into them. You have to do that manually. You are not required to use the default DNS application partitions. You can createyour own or continue to use the System container in the domain partition, which isthe only option under Windows 2000. The storage options are summarized inTable 8-1.