How to Install Service Packs on SQL Server 2008/R2 August 02, 2011 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 Read more
Automated prerequisite installation via PowerShell for Exchange Server 2010 on Windows Server 2008 R2 August 02, 2011 Automated prerequisite installation via PowerShell for Exchange Server 2010 on Windows Server 2008 R2 - v2.0 Read more