The single Windows NT domain is called EXBANK. The Primary Domain Controller (PDC) runs on a pdc-east.eb.com machine in New York City. A backup domain controller (bdc-west.eb.com) runs on a machine located in Los Angles. All Windows NT user accounts have a Directory Server account with the exception of the built-in Windows NT accounts. The Windows NT USER_NAME attribute is the same as the Directory Server uid attribute.