Saturday, July 20, 2013

Active Directory Partitions

The configuration data of active directory database is sored in ntds.dit file, that is replicated to every domain controller in the forest. NTDS.DIT organizes data in three different partitions or also known as naming context.

1- Domain Partition
It contains all objects information such as users, groups, computers and even group policy containers.

2- Schema Partition
It stores information about schema that is object classes and attributes for example user, group, these are classes and their property tabs options like as full name, email, address are attributes.

3- Configuration Partition
It stores the logical structure of the forest means how they are interconnected  and also sites subnet and services information.

Additionally their are two more partitions used by Active Directory 
A- Application is one more partition supported by ADDS. it store a portion of data that contains the objects that is required by an application or service. (ex- dns) this partition is only  replicated when there is need and only for required domain controller.

B- Global Catalog : GC is a partition that stores information about every objects in the forest, it does not contain all attribute of every objects, instead it contains subset of attributes that is helpfull for searching the object in the forest hence is called partial attribute set (PAS).

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