$ 0 0 http://goldenorbit.wordpress.com/2013/03/09/latin-utf8-and-utf16-with-teradata/ Unicode strings are stored as UTF16 on disk anyway. Yes, space is wasted; that’s why there is an algorithm compression function to just compress UTF16 to UTF8 in version 13. Only version 14 can store UTF8 on disk.
http://goldenorbit.wordpress.com/2013/03/09/latin-utf8-and-utf16-with-teradata/