ZFS has feature flags [1]. If you're carefull not to do 'zpool upgrade' (as this commit message warns) unless you understand the consequences, you can switch be

ZFS has feature flags [1]. If you're carefull not to do 'zpool upgrade' (as this commit message warns) unless you understand the consequences, you can switch between ZFS implementations. [1] http://build.zfsonlinux.org/zfs-features.html http://build.zfsonlinux.org/zfs-features.html You can explicity create a pool with certain features disabled. I'm going to try FreeNAS Core tonight.