Zone Size

As an administrator, you can further control the size of a zone by setting the quota and reservation ZFS properties, which determine the maximum amount of disk space that a zone can consume. The properties are set on the zone's dataset that is located on the zonepath defined for that zone. For more information about these properties, see the zfs(8) man page and Chapter 7, Managing Oracle Solaris ZFS File Systems in Managing ZFS File Systems in Oracle Solaris 11.4.

As an alternative, you can create ZFS volumes with fixed sizes and install zones in the volume's datasets. The volumes limit the sizes of the zones installed on the volumes. See ZFS Volumes in Managing ZFS File Systems in Oracle Solaris 11.4.