I've been using this on a CentOS 5.2 system for about six months. I'm running kernel supported ZFS on a Mac Pro serving my gigs of personal data. The ZFS on FUSE filesystem runs on a big usb drive on the CentOS system in a different state. Nightly rsyncs and I have a geographically separate backup complete with nightly ZFS snapshots. I find the ZFS snapshot feature invaluable, making sure that I don't accidentally delete all of my important data. One place where I disagree with this article though is how to install ZFS on FUSE. If you look at his blog site (http://zfs-on-fuse.blogspot.com/), you'll see that he recommends running the latest code out of the mercurial trunk. That's what I've been doing and I haven't had any issues. »