Is it possible to add a folder of media files (images, videos, PDF's) as a Data Store to Server/Portal? If so, then how are the items accessed by apps or viewed in Portal?
As a test, on my 10.8.1 server I created a C:\graphics folder with full access for the arcgis account and added some png files. Then I registered the folder as a Data Store. I see an item for the Data Store in Portal, but I can't figure out how to access the contents (maybe I misconfigured something).