Meh, anything can happen at any time, I’ve come to accept that.

These are basically brand new surveillance grade hard drives, which means they’re designed to run 24/7 and run cooler than consumer grade drives. Neither one has any bad sectors, and they both purr quieter than kittens.

I always keep one completely offline and totally disconnected, sitting on a shelf, save for the occasional clone day where I have both connected.

I figure the chances of both failing at once are on an astronomical scale.