[Denr]

сам нашел. мож кому пригодится!

If I have licensed SQL Server under the Server/CAL model, will I be able to use the SQL Server 2008 CAL with the SQL Server
2008 R2 Server?
Since SQL Server 2008 R2 is a major release, SQL Server 2008 CAL cannot access SQL Server 2008 R2 servers (unless the CAL
is covered by Software Assurance).