A foolproof backup plan?

My hard drives like to scare me.

While I have never had a drive that’s irreversibly crashed, I’ve had a number of incidences where I suddenly couldn’t access data. That sort of stuff has probably made me over-paranoid, but I’ve been looking around and designing a “perfect” backup plan in my head for some time now.

So what does it look like?

At the moment I’ve got two 250 GB hard drives in my computer. These will be setup to mirror each other’s data in case one crashes. I’m also looking for an external hard drive to backup files onto, but this is more for portability than secure backup. I’ll most likely use the Pandora for this once it is released.

However, none of this protects my data from fire, flooding, etc. For this reason an online backup service seems like a good idea. Here again I’m still looking around. A quick Ask.com search revealed iBackup, which supports Linux through rsync. I’d like to look around a bit more, though.