The document is archived and information here might be outdated
Administration (Database Engine)
SQL Server 2008 R2
The high-performance Database Engine in Microsoft SQL Server has many self-tuning configuration options. However, database administrators still must configure such aspects as links to other servers in your organization and an effective database backup strategy. This section of Books Online provides information to help you get the best performance out of your database system and to protect your data against hardware failure or natural disaster.
Describes managing multiple servers with SQL Server Management Studio, managing memory, configuring the server side of the network connections, linking to other servers, configuring mail for the SQL Server engine, and setting configuration options for the Database Engine.