I write out all the machine code on paper in indelible ink and file it in binders in a vast underground bunker located inside a glacier. I have a backup bunker in an undisclosed location in case the first bunker experiences binder-loss.
Up until about last week I would of said western digital, but seeing as how mine has decided to go and die on me I'll have to say no to WD. (It was a 500Gigs WD MyBook.)