check this http://www.sql-server-performance.com/articles/clustering/clustering_intro_p1.aspx http://www.microsoft.com/technet/prodtechnol/sql/2000/maintain/failclus.mspx http://www.microsoft.com/downloads/details.aspx?FamilyID=818234dc-a17b-4f09-b282-c6830fead499 Rohit