Hi all, I'm migrating single EX 5.5 from NT domin in to the EX 2003 2003 domain clustered enviroment. I know that I can't migrate from EX5.5 direct in to the cluster but how would I do this can I migrate all to the single EX2003 then install Second EX2003. Also, for my clustered env. I have two DL380's with 3 X 36GB HDD which will only hold the OS and Exchange for the DB's I will be using Hitachi SAN. Thanks for your help.