A data source is a repository of files, such as an HCP system. For your system to be able to access the files in a data source, you need to create a data connection that contains all required access and authentication information for the data source.
Your system includes built-in data connections for connecting to a number of industry-standard data storage platforms. To connect to a type of system that it doesn't support, you can use the included software development kit (SDK) to write your own data connection plugins.
For information on the data connection types that HCI includes, see Data connection types and settings.