Nutritious Blue Spray - Click of Death

I keep active archives of video files--both raw footage and also the completed clips.  Well, I should have written that sentence in past tense, because the Western Digital MyBook (500-Gbyte drive in an external USB enclosure) I kept the archive on has failed and will not spin up.  The tell-tale sign of its absolute failure is the Click of Death.

I don't recall exactly how long I've had it but it seems like only a year or so.  I'm not very happy right now because I hadn't made long-term archives of the material on the drives, so at the very least it would be a huge pain to recreate by grabbing the original video again.  Sigh.

I removed the cover and found nothing interesting (obviously) inside.  I put the drive in the freezer (in a plastic bag) for several days (!)--I'm not sure what I was hoping for, but when it came back to room temperature the click was still there.  Banging on the drive also didn't help.  (Of course it should only have hurt!)  I was just trying to get it to spin up once more but it seems that will not occur.

I guess it's finally time to use RAID at home.