I need config one cluster in active / active mode in two servers with W2003 Enterprise R2 and SQL Server 2005. I have the next questions: I need install the database in the locall disk on each server. I can make this??? The server are in two distant sites, in the same city but the offices are connected across fiber. How i must connect the NIC for the cluster??, across one switch??. In this moment I have only one server, I can config the cluster with only one node and when I receive the another server include this in the cluster as the second node??? I need install the sql server 2005 in the node1 and 2?? is the same instance or are diferent instances??? What is the difference with the installation in active / passive mode?? Thanks for your help, I need begin this job now!!!! P.D. sorry for my english.