I have a set I rules I follow when computing. The first three are backup, backup, and backup.
This poor lady came to my computer users group with a external harddrive that was not functioning. I took a look at it. When I plugged it in to the power it started click loudly. I plugged it in my laptop and it saw there was a drive but it could not be accessed. It just started clicking more. This was not a good sign. I asked her “You still have the files on your computer right?” She said, “No someone at the PC Users Group told her to backup to the external harddrive.” I told her, “Backing up is when you still have the original file but you also copied the file to some other medium for long term storage.” I did not have the tools to completely check the drive but I was almost sure it was dead. As it turns out there were photos of her deceased husband on it that did not exist anywhere else.