Active Directory Partitions

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Hope this post finds you in good health and spirit.

This post is regarding active directory partitions or directory naming contexts

Active directory database is divided into logical parts and each part is known as Naming context or AD partition. there are three naming contexts:- Schema, configuration and domain naming context.

Schema partition

The schema partition contains object and attribute definitions. In other words, the schema partition contains a list of definitions that define what objects and attributes for those objects can exist in the Active Directory. Schema information is enterprise in natureโ€”all domain controllers in a tree or forest share a common schema and any schema modifications are replicated across the forest. Because the schema defines objects and attributes, an object that is created, along with itโ€™s attributes, must conform to the definitions of the schema.

Configuration partition

The configuration partition contains information about the physical structure of the Active Directory, such as the sites and domains and where domain controllers reside in the enterprise. Configuration information is replicated to all domain controllers in the tree or forest.

Domain Partition

The domain partition contains information about all Active Directory objects that are specific to that domain, such as users and groups, OUs, and other resources. All domain partition information is completely replicated to all domain controllers within the domain. For global catalog servers in other domains, a read-only subset of the domain partition is replicated. This allows the global catalog server to know what is available in each domain so that other domain users can access resources, but changes to the domain partition can only be made from within the domain.

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