1 start server manager on domain-2\server-2. from the start menu, select programs/ administrative tools (common)/server manager.

    2 from the computer menu, select add to domain.

    3 select windows nt backup domain controller as the computer type.

    4 in the computer name field, enter the domain and server name. for example: domain-1\server-1

    5 click add.

    6 click close.