I'm working a lot with the System Center products, every now and then I have to write documentation about my customer's different environments. 
For those who don't use Visio, I created a simple icon pack, mainly help people getting a nice looking documentation for their own or their customer's environments.

The icon pack contains ten (10) icons in .PNG format that should cover all the roles and components in System Center Data Protection Manager 2012 R2.

 

For the Vision stencils, check out Kevin Greene's contribution:

System Center 2012 R2 - Data Protection Manager (DPM) Visio Stencils