One of the great things about zfs on Solaris is how it integrates with NFS, thus making it very easy to manage NFS shares.
By default, the root user on a client machine has restricted access to an NFS-mounted share.
Here's how to grant full access to local root users to NFS mounts:
zfs set firstname.lastname@example.org/24,email@example.com/24 space
This gives full access for root users on any machine in the 192.168.1.0/24 subnet to the zfs dataset "space".