[atyoung]

I've used both, and prefer btrfs in terms of implementation. For some reason the use maintenance and control feels more Linux to me. ZFS feels more Unix, which makes sense given the lineage.

The raid arguments against btrfs are silly. Raid 5 is quite unnecessary, particularly with these kinds of file systems. I can only assume people making this argument have never maintained file systems of this type and clearly don't understand how to implement it correctly.

Both ZFS and btrfs are the future though. If admins aren't seriously considering one of the two for thier server infrastructure then they probably shouldn't be admins.