In addition to this, you can specify the site
to which this new domain controller belongs or have it automatically determine the site
to which it belongs based on its IP address. You can also configure a domain controller
as an RODC. This option applies only to domain controllers other than the first one in
the domain??”which obviously makes sense, since you need to have at least one writable
database before having a read-only copy. An RODC stores a read-only copy of the Active
Directory database similar to the way backup domain controllers did in the old NT domain
model. This new domain controller role is covered later in this chapter in the section
called ???Read-Only Domain Controller???.
The Active Directory Domain Services Installation Wizard can still be initiated by
running dcpromo, but it can now also be accessed by using the Add Roles Wizard from
either the Initial Configuration Tasks screen or Server Manager. You can also switch to advanced
installation mode from the wizard??™s interface rather than having to run dcpromo
/adv from the command prompt. Microsoft has also moved the ability to create a new
domain tree to the advanced mode screen. Since a Server Core installation runs without
a GUI but has to support the installation of Active Directory, the unattended options for
dcpromo have to support a completely silent installation. To address that, dcpromo can
run now without any user interface prompts??”not even to ask for a reboot.
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