Sorry, but this is just wrong. Any system that offers multi user sync is inherently more complex than it needs to be as a backup solution. A backup should generally be
- convenient enough that you do it without thinking about it.
- technically as simple as possible, so it's easy to understand and review.
- secure.
Dropbox fullfills the first point, but not the second, and the third is debatable. Spideroak as a counterexample is just as convenient, has a pure incremental backup mode and is client-side encrypted, the gold standard of security.
You really don't need any of those to be a solid backup system. What matters is that you make backups, the backups last long enough, and there's testing of backups.
Also from what I've seen spideroak is significantly more complex than dropbox.
- convenient enough that you do it without thinking about it.
- technically as simple as possible, so it's easy to understand and review.
- secure.
Dropbox fullfills the first point, but not the second, and the third is debatable. Spideroak as a counterexample is just as convenient, has a pure incremental backup mode and is client-side encrypted, the gold standard of security.