1 on server-2, double-click the control panel.

    2 double-click network.

    3 in the network dialog box, click the identification tab.

    4 click change.

    5 in the domain name field, replace the name domain-2 with the name domain-1 and click ok. this process takes a few moments.

    6 click yes to the warning prompt.

    7 in the welcome to domain-1 domain dialog box, click ok.

    8 close the network dialog box.

    9 click no at the prompt to restart the computer.

    10 establishing the backup domain controller

    11 restart server-1 and log in.

    12 restart server-2, log in, and then wait for all services to start. do not be alarmed if you receive a fail service message.

    13 on server-1, start server manager.

    14 from the view menu, select refresh. the server manager dialog box shows both server-1 and server-2 as primary controllers.

    15 on server-2, start server manager.

    16 in the server manager dialog box, select server-1.

    17 from the computer menu, select demote to backup domain controller, and then click yes.

    18 on server-1, refresh the server manager dialog box. from the view menu, select refresh. the server manager dialog box now shows server-2 as primary and server-1 as backup.

    19 select server-2.

    20 from the computer menu, select synchronize with primary domain controller.

    21 click yes to start synchronization.

    22 click ok.

    23 restart server-1.

    24 restart server-2.

    25 verify that services are starting correctly. if the backup domain controller begins to receive 7023 or 3210 errors after you synchronize the domains, correct the situation as follows:

    a on the primary domain controller, start server manager and select the backup domain controller.

    b synchronize that specific backup domain controller with the primary domain controller.

    c after an event indicates that the synchronization is complete, restart the backup domain controller.