PerformancePoint 2010 has some new settings that control how authentication to the data source itself is accomplished. You’ll find these options under the “Editor” tab for an individual data source:
If you were web administrator of a PerformancePoint 2007 instance you might recall a similar set of options provided by the Bpm.ServerConnectionPerUser and BPM.UseASCustomData web.config properties. With the above change:
Please note that “Unattended Service Account” is separate from application pool identity. Unattended Service Account is a PerformancePoint service application setting.
Wade Dorrell Program Manager, SharePoint BI