The Art of SQL Server FILESTREAM - Red Gate Software

Appendix A: Configuring FILESTREAM on a SQL Server InstanceFILESTREAM access levelsThe FILESTREAM feature can be configured to allow three different access levels.T-SQL accessThis is the lowest FILESTREAM access level. When FILESTREAM is enabled at this level,you can create FILESTREAM-enabled databases and read/write FILESTREAM data onlyusing T-SQL.When FILESTREAM data is enabled for T-SQL access, a local or remote application thathas a valid SQL Server connection open can access the FILESTREAM data just like anyother relational data in the database.Streaming access (local)When the FILESTREAM feature is enabled for I/O streaming access, FILESTREAM datacan be accessed using the Win32 APIs as well as .NET Managed classes.Note that at this level streaming access is enabled only to applications running on thesame computer as the SQL Server instance. It is also important to understand thatFILESTREAM streaming access is allowed only when using Windows authentication toconnect to the database instance.Streaming access (remote)When the FILESTREAM feature is enabled for remote streaming access, FILESTREAMdata can be accessed from client applications running on a different computer throughthe streaming APIs.462