Mirroring

This question has been in the FAQ since forever, but people keep asking the same thing over and over again: "I want to make a backup of a directory. I delete some file on the original directory, but the program doesn't delete it from the destination".

Well, let me tell you: A BACKUP PROGRAM IS NOT A MIRRORING PROGRAM. And this  is a very dangerous feature to add for a backup program.

A backup is a ONE WAY copy. If you delete a file as a mistake or if a virus destroy your data, you will EXPECT to find your files in the destination. If you implement a mirror, you'll find NOTHING there!

A mirror is just a TWO WAYS copy and is perfect for other things, like maintaining two synchronized copies of some folder, but this doesn't fit in a backup program.

Please DON'T write me about adding this "feature" to the program because I'll just ignore your letter.

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