9 The SQL Server Data Provider : Configuring Connection Failover

Configuring Connection Failover
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See “Guidelines for Primary and Alternate Servers” for more information.
NOTE: If using failover with MSCS, which determines the alternate server for failover instead of the data provider, any alternate server specified must be the same as the primary server. For example:
SQLServerConnection Conn = new SQLServerConnection();
Conn = new SQLServerConnection("Host=Accounting1;
Port=1433;Database Name=TEST;User ID=TEST;Password=TEST01;
Alternate Servers="Host=Accounting1;Port=1433;Database Name=TEST");
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