The Art of SQL Server FILESTREAM - Red Gate Software

Chapter 9: Investigating FILESTREAM DatabasesInstanceWindows0 1 2(local only)3(local and remote)0: Disabled 0 0 0 01: T-SQL access only 0 1 1 12: T-SQL and streaming access 0 1 2 3The matrix shows how the values configured at the instance level (rows) and thoseconfigured at the Windows level (columns) result in the FilestreamEffectiveLevel.You'll notice that the lower of the two always wins. For example, if the Windows configurationallows T-SQL and Win32 streaming access but the instance is configured for T-SQLaccess only, then the effective configuration is T-SQL access only. In plain terms, if thedesired access level is remote streaming access, this will need to be configured as such,both at the Windows level and at the instance level.The matrix also shows that it's not possible to control the difference between local andremote streaming access at the instance level. That difference can only be controlled atthe Windows level. (Early CTP versions of SQL Server 2008 did have that ability, but forunknown reasons it was removed before the release.)You can check the output of the following T-SQL statement to find the configured valueat the SQL Server instance level (Listing 9-5).EXEC sp_configure 'filestream_access_level'/*nameminimum maximum config_value run_value----------------------- ------- ------- ------------ ---------filestream access level 0 2 2 2*/Listing 9-5:Identifying the FILESTREAM access level at the instance level.338