I recently spent the better part of a day with a new client recovering data that had become corrupted .
It's easy really copy a file from one place to another and in the process wipe out a large 10 year old file with one by the same name with 2 week's worth of data in it. Multi-tasking, phone interuption, lot's of things can cause someone to do something like this no matter how careful.Of course the solution is to back up the data.But with what and when? It's gotta be easy and quick or you are not going to do it often, or at least as often as you should.
The when is easy ... before you do something important. Why? Because with at least one backup done you can relax and proceed with your work knowing that if anything happens you are covered. If you plan to do it at the end of your process what happens if you mess something up while you are working. Big difference in the outcome and amount of work. DO IT BEFORE YOU BEGIN A PROCESS!
Now to the What to use part. I've been using a program for several years that has never failed me. As a programmer it's one of those things where you think "Boy I wish I would have thought of that" . The program is called Handy Backup ( http://www.handybackup.com/ )
Note that I am NOT a reseller, an affiliate or official reviewer. I just use the product and they make me look good when I recommend it to my clients and they are pleased.
They have a 30 day trial to download. Give it a try. It's about 4 mouse clicks to back up 1 file or a set of folders with 4000 files. I create lots of different backups . Some are incremental backups that only back up the files that have changed and some backups are full backups that backup to an external drive where a new folder is created and named by a time-stamp each time it's done. I can backup to the same computer, an external drive, to a different p-c on my network or to my web site. It's real nice to have periodic backups created off-site.
For about $30 you can have a great deal of piece of mind with your important data. Why not?