[tlrobinson]

If deleting/modifying a file at one location results in deletion/modification of a file on the "backup", then it's not a backup.

[rich90usa]

Certainly. I remember learning early on that RAID != backup, and an easy conceptualization of Sync is RAID 1 at the file/folder level.

I'd recommend that someone using Sync for backup purposes take snapshots of they're syncing for backup purposes.