Solaris 10 u6 Has No '-u' on "zfs receive"
Despite what you might read at docs.sun.com, Solaris 10 update 6 doesn’t have a “-u” option for zfs receive.
Technical
Moving a Solaris 10 Zone
Today I wanted to move a Solaris 9 zone running on a Solaris 10 test server to a new ZFS dataset within the same ZFS pool with compression enabled. This container is an archive of an environment we don’t use very much, normally leave shut down, and intend to delete fairly soon, but since it’s a flash archive of a Solaris 9 machine, it takes up a lot of space on the test system’s local disks.