Just curious about subject above, we would like to have a sql server 2005 into os windows 2003. We are developing a new application. The goal is 1- We want to develop the sql clustering over windows 2003 enterprise edition. 2- Surely the active/active clustering - Is it possible for me to do clustering over windows 2003 ent. Edition? - What is the best way in this case to have clustering or replication ? - Why to chose 2nd question ? - Why? What? And HELP ME ASAPâ€¦â€¦â€¦â€¦. Thank you.. Raydha.