Bagal:and also not sure why you would want to?
Because if I deleted something accidently from a shared folder, I assume it would also delete the duplication.
With daily backups, this overcomes this problem.
And I have experienced complete data loss first hand (from a failed NAS drive, which is why I will never again use them due to their proprietary software). Only due to my persistence (about 8 months worth) of trying numerous restore tools was I able to get it all back, and it's not something I want to experience again..