Performance Explorer provides predefined data sources for the most popular web servers, application servers, database servers, and operating systems. You are not restricted to using only these data sources. These data sources are included to speed the selection process for measures that are to be monitored.
The Data Source Scanner checks your system for a variety of data sources that are commonly found on a range of platforms and returns a list of available data sources.
To specify a system, click System in the Monitor group on the Real-Time Monitoring tab and follow the wizard.