I have 2 windows 2003 standard servers. both are domain controlers on the same domain I want to mirror the data between the 2 servers so if the first one fails I can use the second. I am new to this but I think I have 3 basic options. the first would be to upgrade to the enterprise version of windows. the second woud be a stand alone raid 5 or 10 box that both servers could conect to and the third would be some third party software to mirror the two systems. I am looking for the pros and cons of each of thees options. is one better then the other or am I wrong in my line of thinking. is there a better way I have not thought of. any help will be greatly Appreciated .