Yes ZFS is a requirement, and it is designed to run on any OS that runs ZFS. You don't need the full machine to be running ZFS, just whatever volume you want to

Yes ZFS is a requirement, and it is designed to run on any OS that runs ZFS. You don't need the full machine to be running ZFS, just whatever volume you want to snapshot. It is a bit unclear if you haven't been looking at other snapshot management utilities. Many other tools have various dependencies which may or may not work on your chosen operating system. So generally the requirements are: - ZFS running on the volume you want to snapshot - Bourne shell - Gregorian calendar As far as OS X goes, I'm not sure how many people run ZFS in production but I know there were some people working on it. I've never used it but it still seems to be updated: https://github.com/openzfsonosx/zfs https://github.com/openzfsonosx/zfs