CB-10: Synchronize research data between campus and XSEDE resources

Executive Summary: 
An XSEDE-allocated researcher needs to keep data synchronized when copies are kept on a campus resource and XSEDE Level 1 or 2 resources.
User Importance Summary: 
XSEDE's campus bridging initiative is aimed at making it easier for researchers to access XSEDE services from their campuses, and easier for campus IT administrators to offer their services to other XSEDE users.
Target Communities and Sizes: 
Researchers who need access to data stored on XSEDE resources - (100 < N < 999) Researchers who need to maintain/update data stored on XSEDE resources - (100 < N < 999)