The entire movie (including menus and extras like trailers, special features, etc.) will begin copying itself. The amount of time this process takes will depend on the speed of your computer, the speed of your processor, and the size of the DVD.
If you want to copy the movie without subtitles or extras, you can choose to copy everything but those elements. The movie can also be imported from the hard drive if you've already ripped it.
DVDFab supports NTSC and PAL formats, can compress a DVD-9 into a single DVD with perfect quality, and bypasses regional restrictions. Now you can back up your original discs without all the hassle.