On Windows Server Systems, the domain controller (DC) is the server that responds to security authentication requests (logging in, checking permissions, etc.) within the Windows Server domain. Windows Server System logo Windows Server System is an integrated set of server software, from Microsoft, that forms the infrastructure for operating the backend of an institutions information technology system. ... This article or section does not cite its references or sources. ... A Windows Server domain or Windows NT Domain is a logical group of computers running versions of the Microsoft Windows operating system that share a central directory database. ...
In Windows NT, the central domain controller was known as the Primary Domain Controller (PDC), of which there could only be one with this role; all other domain controllers were identified as Backup Domain Controllers (BDC). In Windows 2000 and later the concept of primary and backup domain controllers was eliminated, partially to emphasize the multi-master replication technology available in Windows; however, there are still a number of master roles that only one domain controller can perform: schema master, domain naming master, infrastructure master, Relative ID master, and the PDC Emulator. These are called the Flexible single master operation roles. If one of these roles is lost the domain can still function, and if the server will not be available again the role may be seized. In NT, a BDC can authenticate the users in a domain. A Primary Domain Controller (PDC) is a server computer in a pre-Windows 2000 NT server Domain. ... In Windows NT 4 server domains, the Backup Domain Controller (BDC) is a computer that has a copy of the user accounts database. ... Windows 2000 (also referred to as Win2K) is a preemptible, interruptible, graphical and business-oriented operating system that was designed to work with either uniprocessor or symmetric multi-processor 32-bit Intel x86 computers. ... The word schema comes from the Greek word σχήμα (skhēma) that means shape or more generally plan. ... A Windows Server domain or Windows NT Domain is a logical group of computers running versions of the Microsoft Windows operating system that share a central directory database. ...
A domain is a concept used in NT server operating systems whereby a user may be granted access to a number of computer resources with the use of a single username and password combination.
Instead, the domaincontrollers in these domains are all considered to be equal in that all controllers have full access to the accounts databases stored on their machines.
As password changes take time to replicate across all the domaincontrollers in an Active Directorydomain, the PDC emulator master receives notification of password changes immediately, and if a logon attempt fails at another domaincontroller, that domaincontroller will forward the logon request to the PDC emulator master before rejecting it.
In Windows NT and Windows 2000 networking, the domaincontroller (DC) is the server that responds to security authentication requests (logging in, checking permissions, etc.) within the Windows Serverdomain.
In Windows NT, the central domaincontroller was known as the Primary DomainController (PDC), of which there could only be one with this role; all other domaincontrollers were identified as Backup DomainControllers (BDC).
In Windows 2000, all domaincontrollers are theoretically equal, and therefore identified simply as DomainControllers (DC).
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