Hi there, I would like to share about the backup system.
Basic, an REAL backup have a mission, that mission have concept basic but sometimes is difficult to really do that efficient.
So, the ideia of the BEST backup ever would be that:
A software who scan you files, list all of then, make a perfect copy, save in other place where the owner can access by security stuffs, close that big copy process in put there a date when that was create, after close that file can not be replace for a while, next day or next period choosen by the owner need to repeat all that process and do not write up of that files, it needs to have another date, close a new file (ok Ricardo, but it will make duplicate the files saved, YES, that is it we NEED, better if the first copy are saved in a place different of the second copy, different way to access too, that should be more security), we need duplicate, triplicated, because with some ransomware got those files so fast there is a good chance to backup the files encripted and, if that happen, alal the bakcup system failed! To improve that, the backup system can not be so fast as GDrive is (for example) and have to understand what type of files are saving, with there are lots of convertions of type of files for an one format (unique .something), the backup should stop and alert the owner of those files, because, maybe the ransomware worked well and you will lost all your files.
So, that is the ideia I would like to share and if the Linux system have that programmed or you guys could write that program and sell that.