VCM must discover machines in your environment before you can collect data from them. You can create a discovery rule to discover all machines, or you can apply a filter to limit the machines that VCM discovers. Discovery rules are used to discover managed machines automatically.
You must have configured and collected data from vCenter and vCloud to add a database discovery rule.
You must license the virtual environments and Windows, Unix, and Linux machines to use for data collection. When you license these virtual or physical machines, they appear in the Licensed Machines list.
VCM can discover machines from Active Directory, browse lists, domain controllers, databases, or by IP address.
We will perform database discovery in this recipe; you can check remaining options in your lab.