Hi, We are setting up a SQL Cluster (2 Nodes, Active/Passive) to test our application suite. I found lot of information about the hardware requirements online but couldnt figure out the software requirements. Following are my assumptions for the software - The 2 nodes will be identical boxes and will be on MS HCL. Software - 1) Windows 2003 Datacentre or Enterprise Edition for both Nodes, i.e. require 2 licences 2) SQL Server 2005 Standard Edition - 1 Licence as the SQL Server will be installed on the cluster. Another question - Which OS is recommended for SQL Failover Cluster, Datacentre or Enterprise edition? Thanks.