A server that has been assigned to a Windows NT domain, but is not designated as either the primary domain controller (PDC) or a backup domain controller (BDC) within the assigned domain. See also Primary Domain Controller (PDC), Backup Domain Controller (PDC).

a server that is a member of a domain but does not store a copy of the domain's security accounts database and does not validate logon requests

a server that is a member of a domain but which does not have responsibility for overall domain security (e