Is there a safe way to change the IP address associated with the virtual server name after the cluster has been set up? In other words, I'd like to change the IP address without having to re-install the cluster. Since posting this topic I have found this link titled "How to change the network IP addresses of SQL Server virtual servers" http://support.microsoft.com/default.aspx?scid=kb;en-us;244980 The reason I want to do this is because we are migrating a production server from a non-clustered installation to a clustered installation. Many applications are currently pointing at the non-clustered server (some of them referencing it by IP address) and they will need to continue to point at it until we migrate the database to the clustered servers. It seems to me that the migration would be more seemless for the applications if we could take down the non-clustered server at the time of migration and assign it's old IP address to become the new IP address of the virtual (clustered) SQL Server. I'm just a little leary of messing up the cluster in some way by making this IP address change just before putting it in production. Has anybody done this type of operation? Any pitfalls that I should be aware of?