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Directory Partition Hierarchy
Directory Partition Hierarchy

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!!! Overview
[{$pagename}], in [Microsoft Active Directory], determines the [Hierarchy] or the [Directory Partition Subtrees]
There is an important distinction between the physical storage of a directory [partition] and its logical position in the directory tree.
Physically, all objects are stored in a single database table, regardless of the directory partition to which they are assigned by virtue of their object names.
Logically, the head of a [Domain Directory Partition] appears in the naming [Hierarchy] as the topmost object — that is, the < domain > container, the Configuration container, and the Schema container each has a distinguished name that identifies its position in the hierarchy.
The respective directory [partitions] contain those objects, which are called "heads"
* the [Domain Directory Partition] contains an object named dc= domainName
* the [Configuration Directory Partition] contains an object named cn=configuration,dc=[Forest Root Domain]
* the [Schema Directory Partition] contains an object named cn=schema,cn=configuration,dc=[Forest Root Domain]
* [Application Directory Partitions] - contain any type of object __except__ for [Security Principal Objects].
[{Image src='Directory Partition Hierarchy/mad-directory-tree-hierarchy.png' caption='directory-tree-hierarchy' align=left style='font-size: 120%}].\\
Figure above shows a conceptual diagram of the directory tree hierarchy, including the directory root (rootDSE) and the default directory partitions below the directory root. In any [Active Directory forest|AD Forest], the [Configuration Directory Partition] and [Schema Directory Partition] are always in these locations.
Each [Domain Controller] in the [AD Forest] holds a master copy (replica) of the [Configuration Directory Partition] and [Schema Directory Partition], which are copied to a [Domain Controller] during domain controller promotion. All updates to [Configuration Directory Partition] and [Schema Directory Partition] are replicated to every [Domain Controller] in the [AD Forest]. In this way, site, service, [AD DOMAIN], and schema information is kept consistent throughout the [AD Forest].
!! [Global Catalog] Directory [Partition]
A [Domain Controller] that is a [Global Catalog] server stores one writable [Domain Directory Partition] and a [Partial Attribute Set], [read-only] [replica] of every other [AD DOMAIN] in the [AD Forest]. [Global Catalog] [ReadOnly] [replicas] contain a [Partial Attribute Set] of attributes for every object in the [AD DOMAIN]. It Replicates GC data with all GC’s in the forest. The [Global Catalog] [Partition] is created automatically by software on the [Domain Controller]. This software copies some of the attributes for each object in the Global Catalog Partition. This information is replicated to other Domain Controllers inside and outside the domain. This is how, given enough time, all Global Catalog servers will have a partial replicate of all objects in the domain.
!! More Information
There might be more information for this subject on one of the following:
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* [#1] - [Directory Partitions|https://docs.microsoft.com/en-us/previous-versions/windows/it-pro/windows-2000-server/cc961591(v=technet.10)|target='_blank'] - based on information obtained 2011-05-15
This page (revision-1) was last changed on 29-Nov-2024 16:16 by UnknownAuthorTop