Z jejich webu:
In existing distributions, actions such as upgrades are dangerous: upgrading a package can cause other packages to break, upgrading an entire system is much less reliable than reinstalling from scratch, you can’t safely test what the results of a configuration change will be, you cannot easily undo changes to the system, and so on. We want to change that.
ZFS a beadm s podporou balíčkovacího systému a grubu, tak jak je to v solarisu 11 a 12, a je po problémech. Už aby to v ubuntu bylo!