In Windows NT 4 server domains, the Backup Domain Controller (BDC) is a computer that has a copy of the user accounts database.
Unlike the accounts database on the Primary Domain Controller (PDC), the BDC database is a read only copy. When changes are made to the master accounts database on the PDC, the PDC pushes the updates down to the BDCs.
Most domains will have at least one BDC, often there are several BDCs in a domain. These domains exist to provide fault tolerance. If the PDC fails, then it can be replaced by a BDC.
In such circumstances, an administrator promotes a BDC to be the new PDC. BDCs can also authenticate user logon requests - and take some of the authentication load from the PDC.
Read the rest of the article here
Unlike the accounts database on the Primary Domain Controller (PDC), the BDC database is a read only copy. When changes are made to the master accounts database on the PDC, the PDC pushes the updates down to the BDCs.
Most domains will have at least one BDC, often there are several BDCs in a domain. These domains exist to provide fault tolerance. If the PDC fails, then it can be replaced by a BDC.
In such circumstances, an administrator promotes a BDC to be the new PDC. BDCs can also authenticate user logon requests - and take some of the authentication load from the PDC.
Read the rest of the article here
Posted by Desire Athow on 02 July, 2008Désiré Athow is the Content Editor of ITProPortal.com and has been writing technology articles for nearly a decade. You can follow him on Twitter.
Compare over 250mobile phones &
52,000 deals!
Hot Topics
Spotify
Spotify is certainly one of the most popular online music websites in the world which is a feat for a service that was officially launched only in February 2009
