Definition

backup domain controller (Windows NT)

A backup domain controller (BDC) is a role a Windows NT computer takes on to help manage access to network resources. The BDC maintains a read-only copy of a user accounts database and verifies logons from users. The read-only copy of the database is automatically synchronized with primary domain controllers (PDCs).

BDCs can be promoted to PDCs if the network is busy or if the PDC fails. Microsoft recommends that the promotion take place when the PDC is active so no information will be lost when it is demoted to a BDC.

Contributor(s): Toni Boger
This was last updated in February 2013
Posted by: Margaret Rouse

Email Alerts

Register now to receive SearchWindowsServer.com-related news, tips and more, delivered to your inbox.
By submitting you agree to receive email from TechTarget and its partners. If you reside outside of the United States, you consent to having your personal data transferred to and processed in the United States. Privacy

More News and Tutorials

Do you have something to add to this definition? Let us know.

Send your comments to techterms@whatis.com

There are Comments. Add yours.

 
TIP: Want to include a code block in your comment? Use <pre> or <code> tags around the desired text. Ex: <code>insert code</code>

REGISTER or login:

Forgot Password?
By submitting you agree to receive email from TechTarget and its partners. If you reside outside of the United States, you consent to having your personal data transferred to and processed in the United States. Privacy
Sort by: OldestNewest

Forgot Password?

No problem! Submit your e-mail address below. We'll send you an email containing your password.

Your password has been sent to: