We use discovery to import computer, user, and group resources into CM12. Discovery can also be used to discover network infrastructure, as well as IP Subnets and Active Directory Sites in Active Directory Forests.
Enabling discovery is one of the first items we configure in CM. Heartbeat discovery is automatically enabled when we install a primary site. Forest Discovery is the only discovery method that can be enabled on a CAS. Enabling discovery is very similar for each method (other than heartbeat), so we will only step through the process one time.
To enable Active Directory (AD) Forest Discovery, follow these steps:
Enable the Enable Active Directory Forest Discovery checkbox.
Select Properties from the ribbon.
Navigate to Administration | Hierarchy Configuration | Discovery Methods, and select Active Directory Forest Discovery from the Details pane.
Choose any additional options for Forest Discovery:
Automatically create Active Directory...