Question : SQL Server Backup Connection

Is there a way to set up the web.confin appsettings or connection strings so that IF SQL Server connection is down...it switches to the backup SQL Server on another machine?

Answer : SQL Server Backup Connection

From BOL:

Data Source=SQLA\INST1;Failover Partner=SQLB\INST1;Initial Catalog=DBMTest;Integrated Security=True

Works with mirroring: http://technet.microsoft.com/en-us/library/cc917713.aspx