The .NET Data Provider for Teradata supports batch update (see ADO.NET Batch Update http://msdn.microsoft.com/en-us/library/aadf8fk2.aspx); but most likely the SSIS "ADO.NET Destintation" component does not support ADO.NET Batch Update. That said, TPT + Attunity is the right solution for Bulk Loads.
The .NET Data Provider for Teradata supports batch update (see ADO.NET Batch Update http://msdn.microsoft.com/en-us/library/aadf8fk2.aspx); but most likely the SSIS "ADO.NET Destintation" component does not support ADO.NET Batch Update. That said, TPT + Attunity is the right solution for Bulk Loads.