We have one main site, and 3 Remote locations all connected via the MPLS network. Connectivity from all locatons to the main site is valid. Site 1 has 33 GB of data, site 2 has 213 GB of data, and site 3 has 26GB of data. They are all backing up locally to their respective servers. We're trying to copy the backup files daily to the main site so we have a redundant location centrally located at the main site. Even though we have incrementals in place to reduce daily backups, there's still a significant amount of data that needs to travel.
Objective is to backup remote locations to the central----however, Bandwidth is a problem and it takes several hours to a couple of days to backup data from the main site using synback, or ntbackup. Any suggestions to make the backups happen faster?