Definitions for "Backup Domain Controller"
Keywords:  pdc, bdc, logon, synchronized, promoted
The server that contains a backup copy of the account database from the Primary Domain Controller (PDC). Used for authentication purposes.
A Windows NT domain server that stores a backup of the database from the primary domain controller (PDC). The backup domain controller database is synchronized automatically with the copy of the database on the primary domain controller. A backup domain controller also authenticates users when they log on and can be promoted to a primary domain controller if necessary.
A role that can be assigned to a server on a Windows NT 4.0 network. A BDC can assume the functions of a PDC when the PDC server fails, and it can help to balance the workload on a network. See also primary domain controller.
Keywords:  storage
Keywords:  information
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