The rename-host command renames a host, from an existing name to a new name. The name of the host is not the DNS name (Unique String) of the machine, but the Sun Update Connection – Enterprise name of the host. You can change this name at any time without affecting the machine or its configurations.
To get valid values for the -sH parameter, use the -lah command.
A valid value for the -tH parameter is a new, unique host name. This name must not appear in the output of the -lah command.