Execute the following script in Query Editor to configure XML data storage outside the table. It can also be used to control the storage of small textdata.

USE AdventureWorks;
GO
EXEC sp_tableoption 'Production.Illustration', 'large value types out of row', 1;
GO
-- to reverse it

EXEC sp_tableoption 'Production.Illustration', 'large value types out of row', 0;
GO