Sort of orthogonal anecdote. I ran freebsd on a failing usb stick for about a year. It had copies=3 or similar on it and zfs just did it's best with fixing thin

Sort of orthogonal anecdote. I ran freebsd on a failing usb stick for about a year. It had copies=3 or similar on it and zfs just did it's best with fixing things up on the fly. Ran scrub fairly often, it told me things were bad, system kept running. That is to say, flash can stumble on with pretty high failure rate for much longer than I expected.