I use a single external drive, and carry a spare back up external. I had a guy start raving and running his mouth tell me i'm illegal. Saying that i could only have one hard drive per disc to stay 1:1 ratio. If the hard drive goes out, i'm out of luck. And i can't carry the extra hard drive. I asked him if he had lunch yet, if he ever tasted a scratched dirty fingerprinted sound choice cdg with mustard. And that he's about to. But i have no trouble booting up to an external if i needed to. And so the story goes.........
