The DPM Backup Summary Report is a free SSRS based report that you can load in your DPM enviroment. This report works with DPM 2010 and DPM 2012/R2. For now the report is only for disk and tape based backups. In the future we are looking to extend this in the future to show online (Azure) as well. The features and data points contained in the report are:

More information about the report here:

Screenshot of the report: