This is a Technet whitepaper here : Integration of SQL Server 2008 and Office SharePoint Server 2007
In this article:
About Office SharePoint Server integration with SQL Server 2008
Database backup compression
Log stream compression
Transparent Data Encryption (TDE)
SQL Server 2008 Resource Governor
This article provides prescriptive guidance for implementing some of the new features in Microsoft SQL Server 2008 that enhance the deployment of Microsoft Office SharePoint Server.