Recently I tried to do some backups of my entire Windows 7 64 bit (including system image and the files I wanted) using Window's own backup system and I got an error which I couldn't debug because it is always given in codified code which I don't have time to analyse. In summary, I am without any backup of my system and files for now and I don't know how to fix this Windows backup error.
So I started looking for alternative tools while doing a simple copy and paste of my files to an external HD when I come to notice that this simply copy and paste took far less time to do in this "manual" way that it was used to be with Windows' backup system (already not considering the creation of system image).
Realizing that, I started to wonder: what exactly does a backup software do that is more then simply copy and paste in the background? Of course I'm not considering such more advanced features such as system image and backup of the registry, but when it comes to backup your folders + files, does such backup tools (including Window's own tool) do anything more then simply copy and paste and maybe compress? To say in another way: if I decided to create a simple tool to backup only my folders + files, what should I include on it?
Reading the comments section I came to conclude that maybe my question wasn't clear enough. Although I mentioned my recent problem with Windows' backup system, I'm not here interested in solving that problem; that was only to provide some context for my question. The real question here is: what does backup software do when doing backup of common files besides the simple copy of files to another directory and maybe compress them?