Originally Posted by CDSmith

Between the backing up that my host (TechieMedia) does and my own backups my site data is protected in about 4 different ways.

I burn a disk every 6 months or so containing a complete copy of every web site I've ever made.
I save all of it to an external drive and update/resave everything on there regularly.
And I keep all my sites backed up on my computer hard drive, always. I never delet after FTPing. Ever. I have no idea why others do, and over the years I've seen countless people on here complaining they lost all their data. If they had only listened to me.
I also have a 2nd computer that has all my stuff as one further backup.

Cost? The price of a few black CDs/DVDs and an external drive.

Unless you're talking constipation or basement flooding my policy is you can never be too backed up.