Is the instance of Microsoft SQL Server to connect to. Specify server_name to connect to the default instance of SQL Server on that server. Specify server_name\instance_name to connect to a named instance of SQL Server on that server. The connection is made without testing any ODBC data source.
Is the name of an ODBC data source defined to use the SQL Server ODBC driver. odbcping verifies that the data source is correct by using it to connect to the server named in the data source.