I have set up sync folders on a Mac mini at our home and while traveling had our laptops sync with the Mac mini as backup (read only) using bit torrent sync. Worked flawlessly. I am considering the following setup. Have our home computers (3) sync their critical files on the Mac mini that serves as a backup. Install Crashplan on the Mac mini and pay for a 1 computer backup on their Crashplan central. In this way I don't have to pay for a family plan, while at the same time all the computers, including the laptops will always be offsite backed up. So step 1 is to use bit torrent sync critical folders to my central Mac mini for desktops and laptops Step 2 is to use crash plan for that computer to backup to Crashplan central as insurance for theft, fire paying only for 1 computer