Need good backup software, not only free

BeRob

My situation. There are many GB of difference data that would be saved for it protection from deleting.
I wish to do backup on external device and I plan to start backup online.
Backup must be for only changed files and be automatically.
Free software has as a rule some limitations and not good tech support. I’m ready to consider not very expensive programs.
Thanks for you answers.

Greg Bernhardt

Check out Acronis True Image
http://www.acronis.com/homecomputing...cts/trueimage/

Routaran

I'll 2nd greg's suggestion. Acronis is what we use at work to make nightly incremental backups of our servers. Its a good piece of software and will do exactly what you are looking for.

rcgldr

Backing up many gigabytes of data online would be very time consuming, unless you have an unusually fast upload speed. Most backup solutions involve some type of offline storage. For a home system, probably an external hard drive would be best. If it's just a few GB, you might consider backing up to DVD's.