Solaris Guest Domain U
A Solaris guest domain works like a normal Solaris Operating System. All of
the expected tools are available.
You can create SolarisTM Zones and branded zones in a Solaris guest domain.
Planning for Solaris Guest Domain U Upgrade
If you install a guest domain with the Solaris defaults, you will
not be able to upgrade that guest domain later because the Solaris installation will
not create enough space in the root partition. If you want
the ability to upgrade the guest domain, increase the root partition to 1.5