ZFS is designed to reduce complexity and ease administration. For example, with existing file systems you must edit the /etc/vfstab file every time you add a new file system. ZFS has eliminated this requirement by automatically mounting and unmounting file systems according to the properties of the dataset. You do not need to manage ZFS entries in the /etc/vfstab file.
For more information about mounting and sharing ZFS file systems, see Mounting and Sharing ZFS File Systems.