You can use the beadm utility to create and manage snapshots and clones of your boot
environments.
Note: The following distinctions relevant to boot environment administration:
A snapshot is a read-only image of a dataset or boot environment at a given point in time. A
snapshot is not bootable.
A boot environment is a bootable Oracle Solaris environment, consisting of a root dataset and,
optionally, other datasets mounted underneath it. Exactly one boot environment can be active at a
time.
A clone of a boot environment is created by copying another boot environment. A clone is bootable.
Reference: Managing Boot Environments With Oracle Solaris 11 Express, Using beadm Utility