Researching a way for my mom to backup her files to a location outside her house, and doesn't cost "anything", I came up with the following solution:
Mom got a USB disk, which we placed at my home, connected to my FTP server. I set up an account for her, and set access to her USB disk. I installed
Cobian Backup on her PC, and set up the relevant directories and files to be backed up on her PC. A shortcut on her desktop, and she's good to go. We completed the backup with another USB disk connected directly to her PC, so she'll have one backup at home, and one at my home.
Cobian Backup has a large selection of settings to make the most of your backup needs. The authors home page:
CobianSoft
Cobian Backup is FreeWare!
Cobian Backup would work great with
FreeNAS.