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global catalog
The global catalog contains a complete replica of all objects in Active Directory for its Host domain, and contains a partial replica of all objects in Active Directory for every other domain in the forest.
The global catalog is a distributed data repository that contains a searchable, partial representation of every object in every domain in a multidomain Active Directory forest. The global catalog is stored on domain controllers that have been designated as global catalog servers and is distributed through multimaster replication. Searches that are directed to the global catalog are faster because they do not involve referrals to different domain controllers.
In addition to configuration and schema directory partition replicas, every domain controller in a Windows 2000 Server or Windows Server 2003 forest stores a full, writable replica of a single domain directory partition. Therefore, a domain controller can locate only the objects in its domain. Locating an object in a different domain would require the user or application to provide the domain of the requested object.
The global catalog provides the ability to locate objects from any domain without having to know the domain name. A global catalog server is a domain controller that, in addition to its full, writable domain directory partition replica, also stores a partial, read-only replica of all other domain directory partitions in the forest. The additional domain directory partitions are partial because only a limited set of attributes is included for each object. By including only the attributes that are most used for searching, every object in every domain in even the largest forest can be represented in the database of a single global catalog server.
schema
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:
* Classes
* Class attributes
* Class 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.
Schem Master is A FSMO role held by single DC in forest
What else can I help you with?
What FSMO should not be housed on a domain controller that has been configured as a global catalog?
infrastructure master
What FSMO role should not be housed on a domain controller that has been configured as a global catalog?
infrastructure master
Why the global catalog server and infrastructure master not avail in the same domain controllers?
1. GC holds group membership of universal group. whileInfrastructure hold group information in domain level.2. We can't set infrastructure master and GC together on same DC.Ifinfrastructure master and GC is on the same server then infrastructure will not function because it will never find the data that is out of date.Syed Mukthar Ahammed.The Infrastructure Master (IM) role should be held by a domain controller that is not a Global Catalog server (GC). If the Infrastructure Master runs on a Global Catalog server it will stop updating object information because it does not contain any references to objects that it does not hold. This is because a Global Catalog server holds a partial replica of every object in the forest. As a result, cross-domain object references in that domain will not be updated and a warning to that effect will be logged on that DC's event log. If all the domain controllers in a domain also host the global catalog, all the domain controllers have the current data, and it is not important which domain controller holds the infrastructure master role.
What is the difference between master tumblers and regular tumblers?
Master is upgraded.
What is the What is the difference between master's and masters?
masters is multiple masters and master's is possession:"that's the master's magic wand."
What is the difference between Game Gear and Master System?
The difference between the Game Gear and Master System is the fact that the Game Gear runs off batteries and the Master System contains a central processing unit.
Is a global catalog server useful in a single domain environment?
no the gc has not much role in single domain environment, as the infrastructure Master does the same function.GC is important in mutilpole domain environment.
What is the difference between a station master and a teacher?
station master minds the train teacher trains the mind
Differnce between master slide and normal slide?
The difference is between Master Slide and apply a master slide layout to a slide, the font face style in the normal slide.
What is the difference between a bachelors and master's degree?
masters is more advanced
What is the difference between a master of arts and a master of science degree in reading?
the master of arts reads Marathi and English in proper way grammatically and the master of science can not.
What is the difference between a Bachelor Degree and a Master Degree?
Difference between Bachelor Degree & Master Degree 1. Bachelor Degree is Undergraduate program and Master Degree is Postgraduate program. 2. Bachelor Degree is for 3 years and Master Degree is for 2 years 3. You can do Master Degree without passing the Bachelor Degree program.
