You can tell zfs to store N copies of the files (you do it at file system level, but it doesn't have to be for the whole disk) instead of one, so you can recove

You can tell zfs to store N copies of the files (you do it at file system level, but it doesn't have to be for the whole disk) instead of one, so you can recover from bit rot even with a single disk. At least in theory, I have never tried it.