>Rick -- You may want to visit these two web sites, Fibre Channel Fundamentals, http://www.spectralogic.com/fibre/fcfund.htm and Fibre Channel FAQ's, http://www.elew.com/fcfaqs.htm. The latter site is a "little" dated but the info explains the technology. HTH. :-) Sea also these one: http://www.fcgroup.com/ http://www.fibrechannel.com/ Martin Trevorn [log in to unmask] Visit our website regularly for FAQs, articles, how-to's, tech tips and much more http://nospin.com - http://nospin.org