It works 😉 (even on High Sierra!) The Goal I have: A MacBook Air a portable USB 3.0 external 1TB disk because I’m space constrained on my 128 GB machine 2 external 1TB platters on my desk connected to a USB hub What I wanted (it works): All important documents, data, pictures, videos on ZFS separate snapshotting for different folders (e.g. a lot of datasets, more on why later) automatic backups v