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What is Filestream in SQL Server?
FILESTREAM enables SQL Server-based applications to store unstructured data, such as documents and images, on the file system. FILESTREAM integrates the SQL Server Database Engine with an NTFS or ReFS file systems by storing varbinary(max) binary large object (BLOB) data as files on the file system.
How can I tell if Filestream is enabled in SQL Server 2016?
Enabling FILESTREAM Right-click the instance, and then click Properties. In the SQL Server Properties dialog box, click the FILESTREAM tab. Select the Enable FILESTREAM for Transact-SQL access check box.
How does SQL Server and FILESTREAM work together?
FILESTREAM integrates the SQL Server Database Engine with an NTFS or ReFS file systems by storing varbinary (max) binary large object (BLOB) data as files on the file system. Transact-SQL statements can insert, update, query, search, and back up FILESTREAM data. Win32 file system interfaces provide streaming access to the data.
What does it mean to use a FILESTREAM filegroup?
A FILESTREAM filegroup is a special filegroup that contains file system directories instead of the files themselves. These file system directories are called data containers. Data containers are the interface between Database Engine storage and file system storage. When you use FILESTREAM storage, consider the following:
How big should a file system be to use FILESTREAM?
The size and use of the data determines whether you should use database storage or file system storage. If the following conditions are true, you should consider using FILESTREAM: Objects that are being stored are, on average, larger than 1 MB. Fast read access is important.
What happens when a FILESTREAM field is set to null?
When you update a FILESTREAM field, you modify the underlying BLOB data in the file system. When a FILESTREAM field is set to NULL, the BLOB data associated with the field is deleted. You cannot use a Transact-SQL chunked update, implemented as UPDATE**.**Write (), to perform partial updates to the data.