client_arch karch_value ...
client_arch specifies that the operating system server is to support a different platform group than the server uses. If you do not specify client_arch in the profile, any diskless client that uses the operating system server must contain the same platform group as the server. You must specify each platform group that you want the operating system server to support.
Valid values for karch_value are sun4u and i86pc. For a detailed list of platform names and various systems, see Solaris Sun Hardware Platform Guide at http://docs.sun.com.
You can use client_arch only when system_type is specified as server.