For home-use this is a reasonable tradeoff. Imagine my non tech-savvy wife for some reason has to get access to the data when one of the NAS has malfunctioned b

For home-use this is a reasonable tradeoff. Imagine my non tech-savvy wife for some reason has to get access to the data when one of the NAS has malfunctioned because the zfs pool encryption was badly configured. Explaining "zfs receive" or let alone what zfs, linux and ssh is going to be grounds for divorce. Heck, i don't even want to read man pages about zfs myself on weekends, i have enough such problems at work. Besides, you still want 2 physical locations. It's going to be less optimal and less professional. That's ok, for something as important as backups, keep it boring. Simply starting up the second box is simple, stupid and has well-understood failure modes. Maybe someone like me should just buy an off-the shelf NAS.