It was a long time ago, and I wasn't directly involved. I did experience the fallout though, which was hours if not days of downtime to repair corruption. I'm sure it's better now, and these problems might not even be possible on a small home system, but I've always avoided ZFS since then. Plus it's just too complicated for my needs. As time has gone by I no longer enjoy complex technology for its own sake (I very much did when I was younger). Now I just want it to work and not demand any more of my time and brainpower than necessary. Features that I don't need are negatives.