Active Directory stores information about all the objects, resources on the network, policies applied on them and permissions on the resources..objects can be users, computers, printers etc
Active Dirctory stores information about all the objects, resources on the network, policies applied on them and permissons on the resources
The four types of Active Directory container objects are Organizational Units (OUs), domains, sites, and the built-in container. Organizational Units are used to organize users, groups, and devices for management and delegation of permissions. Domains represent a logical group of objects within the directory, while sites are used to manage replication and network topology. The built-in container holds default groups and accounts that are created with Active Directory.
Active Directory NC (Naming Context's) * Active Directory consists of three partitions or naming contexts (NC) ** Domain, Configuration and Schema Naming Contexts * Each are replicated independently * An Active Directory forest has single schema and configuration ** Every domain controller (DC) holds a copy of each (schema, configuration NC's) * Forest can have multiple domains ** Every domain controller in a domain holds a copy of the domain NC
Active Directory NC (Naming Context's)Active Directory consists of three partitions or naming contexts (NC) Domain, Configuration and Schema Naming ContextsEach are replicated independentlyAn Active Directory forest has single schema and configuration Every domain controller (DC) holds a copy of each (schema, configuration NC's)Forest can have multiple domains Every domain controller in a domain holds a copy of the domain NC
Active Directory NC (Naming Context's)Active Directory consists of three partitions or naming contexts (NC) Domain, Configuration and Schema Naming ContextsEach are replicated independentlyAn Active Directory forest has single schema and configuration Every domain controller (DC) holds a copy of each (schema, configuration NC's)Forest can have multiple domains Every domain controller in a domain holds a copy of the domain NC
InetOrgPerson is a class. It represents a directory of people relating to an organisation and holds data about them. The purpose of InetOrgPerson, is for separate organisations to share network resources (eg network services or bandwidth).
Companies House Direct provides a massive directory of information about businesses around the UK. The directory holds more than 260 million documents from over 3 million companies.
The Sysvol folder in Active Directory is a critical component that stores scripts, group policies, and other data needed for domain operations. It is replicated across all domain controllers within a domain, ensuring consistency. Key subfolders include "Policies," which contains Group Policy Objects (GPOs), and "Scripts," which holds logon and logoff scripts. The Sysvol folder is essential for maintaining domain-wide settings and enforcing security policies across the network.
For the best performance, when an Active Directory organization contains more than 20,000 objects, you should upgrade to 64-bit. Upgrading servers that run Active Directory domain controllers and the global catalog to 64-bit improves the overall performance and scalability of your Exchange Server 2007 environment. However, 32-bit domain controllers are still supported. Lookup and response times between the Exchange 2007 categories and the Active Directory directory service will improve with the use of 64-bit. The size of the Extensible Storage Engine (ESE) database that holds Active Directory can frequently be larger than 3.0 gigabytes (GB). This prevents caching of the contents of the whole database, and therefore increases lookup and response times. By using 64-bit, the available RAM for caching can be increased beyond 4.0 GB. This is large enough to cache the whole ESE database, even for large Active Directory organizations, and will improve Exchange 2007 lookup and response times.
All databases have a schema which is a formal definition (set of rules) which govern the database structure and types of objects and attributes which can be contained in the database. The schema contains a list of all classes and attributes in the forest.The schema keeps track of:ClassesClass attributesClass relationships such as subclasses (Child classes that inherit attributes from the super class) and super classes (Parent classes).Object relationships such as what objects are contained by other objects or what objects contain other objects.There is a class Schema object for each class in the Active Directory database. For each object attribute in the database, there is an attributeSchema object.PartitionsActive Directory objects are stored in the Directory Information Tree (DIT) which is broken into the following partitions:Schema partition - Defines rules for object creation and modification for all objects in the forest. Replicated to all domain controllers in the forest. Replicated to all domain controllers in the forest, it is known as an enterprise partition.Configuration partition - Information about the forest directory structure is defined including trees, domains, domain trust relationships, and sites (TCP/IP subnet group). Replicated to all domain controllers in the forest, it is known as an enterprise partition.Domain partition - Has complete information about all domain objects (Objects that are part of the domain including OUs, groups, users and others). Replicated only to domain controllers in the same domain. Partial domain directory partition - Has a list of all objects in the directory with a partial list of attributes for each object.The DIT holds a subset of Active Directory information and stores enough information to start and run the Active Directory service
All databases have a schema which is a formal definition (set of rules) which govern the database structure and types of objects and attributes which can be contained in the database. The schema contains a list of all classes and attributes in the forest.The schema keeps track of:ClassesClass attributesClass relationships such as subclasses (Child classes that inherit attributes from the super class) and super classes (Parent classes).Object relationships such as what objects are contained by other objects or what objects contain other objects.There is a class Schema object for each class in the Active Directory database. For each object attribute in the database, there is an attributeSchema object.PartitionsActive Directory objects are stored in the Directory Information Tree (DIT) which is broken into the following partitions:Schema partition - Defines rules for object creation and modification for all objects in the forest. Replicated to all domain controllers in the forest. Replicated to all domain controllers in the forest, it is known as an enterprise partition.Configuration partition - Information about the forest directory structure is defined including trees, domains, domain trust relationships, and sites (TCP/IP subnet group). Replicated to all domain controllers in the forest, it is known as an enterprise partition.Domain partition - Has complete information about all domain objects (Objects that are part of the domain including OUs, groups, users and others). Replicated only to domain controllers in the same domain. Partial domain directory partition - Has a list of all objects in the directory with a partial list of attributes for each object.The DIT holds a subset of Active Directory information and stores enough information to start and run the Active Directory service
It holds system files and databases.