Docs : Managing ZFS in Solaris 10 Containers e
“This guide is intended to show a new user the capabilities of ZFS when coupled with Solaris Containers. It describes the assignment of a ZFS file system to a zone, and some of the ZFS administrative tasks possible in such a configuration. Assigning a file system to a zone gives a zone administrator full delegated control of the ZFS file system, enabling them to take snapshots, create sub file systems and perform other tasks without requiring the global zone administrator’s intervention.”
Zones Unofficial FAQ also updated to reflect on this.