On Feb 21, 2013, at 6:57 PM, Matthias Appel <appel.matth...@gmail.com> wrote: . > > That is what I wanted to say....so if there Is ZFS-a and ZFS-b, why call both > of them ZFS?
ZFS has version numbers. They are backward but not forward compatible so newer code can mount older ZFS but not the other way round. As version increases, capabilities increases, from supporting compression, more compression options, dedup and finally, in the version in Solaris 11, encryption as well. All Illumos/opensolaris versions of ZFS do not support ZFS type encryption, sadly.
