We have two sites. These sites connected via VPN. Each site has a storage box. Each sites users save their data into that storage box. We want to sync data of storage box to each other sites (e.g. like Site A and Site B. Copy Site A data dump in site B and Site B data dump in Site A on daily or weekly basis) over VPN connection. Our VPN connection speed 4 Mbps.
Please suggest backup application for our scenario. We prefer go with commercial application