An HTTPS connection with SSL will encrypt your transfers, but typical sync software doesn’t automatically encrypt the data that’s eventually stored. Whether your chosen offsite location is a friend or relative’s house, or simply a friendly business, it’s not a great idea to have your sensitive data floating around unencrypted. ![]() That doesn’t mean you shouldn’t include your system backups in what you sync, but only as part of syncing your total data store. Trying to perform a traditional backup of terabytes over the public internet with medium-speed ISPs at either end has proven nearly impossible in my experiments. For software, I’ve come down strongly on the side of file-based synchronization. The systems can be PCs, servers, or NAS units, but for best results need to be running all the time, or at least on a regular basis. ![]() Essentially each end serves as a cloud backup for the other. You can sync whatever you want to their site, and vice versa. You and a friend, or at least someone willing to give you space on their site, each have a system with plenty of storage. A Peer-to-Peer Architecture for Offsite Backup After playing with a variety of potential solutions over the last year or two, I’ve finally come up with some options that fit the bill. As simple as the idea sounds, it turns out to be a bit tricky to implement. ![]() Depending on how you feel about the security and reliability of your cloud provider, you might also like the additional control of this solution. Since cloud storage can easily cost $100 per terabyte per year, someone with a 10TB library of photos, videos, movies, and music could wind up spending $1,000 per year to rent space they could buy for a few hundred dollars. Now that large hard drives, including the massive new 14TB models, are available to everyone, it makes sense to think about how they can be used to create your own personal offsite backup system without paying the monthly fees required by cloud storage providers.
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