OK, now all the problems have been solved!
I have two LaCie D2 Quadra enclosures. I bought one on 2009 and other one I bought on 2011.
The 2009 enclosure could not recognized 3Tb as I reported on this topic.
Last week, I decided to brake out the warranty void on my 2011 enclosure and tried to plug the Hitachi 3Tb drive on it. It worked!!!! After reformatted, all worked!!! Full 3Tb has been recognized without any problems!