New Infrastructure Planning and Design Guide: Microsoft SQL Server 2008

The Infrastructure Planning and Design team has released a new guide, Microsoft SQL Server 2008. When used in conjunction with product documentation, this guide will help companies confidently plan the implementation of a SQL Server 2008 infrastructure. Fundamental tasks are addressed to help identify which SQL Server roles will be needed as well as to determine the infrastructure's components, server placement, and the fault-tolerance configuration to meet necessary requirements.

http://blogs.technet.com/technet_flash_feed/archive/2009/02/25/new-infrastructure-planning-and-design-guide-microsoft-sql-server-2008.aspx