read this guide http://www.dvdvideosoft.com/guides/video-DVD-ripping.htm.
Just a video converter won’t pass any protection. A backup software able to copy the dvd yes is working. And I can tell the 1 Click DVD Copy Pro or not is a good one. As the name said is one click. The original in one drive the blank disc in other drive click start and you’re in business. Also you can have more choices for a good backup like ripping the dvd and passing the protection with two softwares. DVD Fab and DVD Idle made by the same company and 1 Click with Any DVD. So Google all from above and download them. None of them is a freeware.
DVD Smith is freeware and is great if you just copy DVD to your hard drive. For DVD to DVD copying, I recommended Movie DVD Copy. It is a pretty good DVD Copy program that rip protected DVDs. I’ve been using it all the time and never miss backing up a DVD. These two software can be found at http://www.movie-dvd-copy.com
You can use aimer soft dvd ripper to rip dvds to computer, it can bypass all kind of dvd copyright protection schemes and save the movie to computer in reuglar video formats, keep the original video and audio quality
How to rip dvds to laptop in avi/wmv/mpeg/mp4
Yes, aimersoft dvd ripper can supports ripping protected dvd to video format so that you can backup your dvds to computers.
From your description, I think you need a dvd copy or dvd backup program to make some copies of the dvds, so that you can keep the original one longer.