Just before I exited the Linux world entirely, I was beginning to chip away at the iceberg known as btrfs, and it was fascinating. I saw so much promise in many of its features, for revolutionizing backups and organizing my disks and everything.

Now btrfs isn't ZFS, but it has some feature parity and perhaps the "poor man's ZFS". It's also much more reasonable to run on certain OS, due to the licensing, packaging, and in-kernel status of ZFS being kind of weird.

One memorable time I was encouraged to use ZFS was when I mentioned to the Linux User's Group that I'd had to pull the power cord to reboot my computer, and I was roundly scorned for this foolish maneuver. But you may change your mind about the wisdom of doing either one when you consider that the system in question was a Raspberry Pi. Heh.