Joffer's Notepad

Install on active node first. Install on passive node(s) afterwards. Needs to update non-cluster services and components Source:  http://www.db-staff.com/index.php/microsoft-sql-server/87-upgrade-sql-2005-cluster-to-sp3

Upgrade passive node N2 Boot passive N2 Move resources from N1 to N2 Patch new passive node N1 Boot passive N1 Source: http://blogs.technet.com/b/mdegre/archive/2010/01/16/apply-a-sql-server-2008-service-pack-or-hotfix-to-a-failover-cluster-instance.aspx  

http://blogs.msdn.com/sqlreleaseservices/