Offline backup software

In previous post, i talk about online backup witch is mandatory to protect your data, now let's explore offline backup solution (for pictures, video and music)

There's several hardware solution, NAS, home-made NAS with samba, or external drive in usb with plenty GB and even TB with LaCie solution.

So, will using a NAS or other offline solution, there's some software bundle provided but in most case, they are no so much efficient.
I will describe two software solution, one for nerds and other for "normal" people :)

• Rsync (http://samba.anu.edu.au/rsync/)
  
• SyncBack (http://www.2brightsparks.com/syncback/)
  

Rsync is an open source software that run in command line and it was a little bit complex to understand, but i work well on linux, windows and mac.

There's an exemple to backup data on windows :

rsync -rtvnP --stats --modify-window=2 "/cygdrive/c/My Data" "/cygdrive/d/Backup/"

SyncBack is a windows only software but really easy to configure and to use. There's several version including a freeware version, efficiant enough for personnal use. Backup can be zip (4GB maxi), saved on ftp, or network drive.
User interface is clear with an expert's option button. An intereseting option (for smart home software inclusion) is log file in html format, witch can be send by mail when backup is done.

Both software are usefull and stable, my preference go to rsync because i can have full control and it can be use in several plateform.

Well, now our data should be safe for a long time :)