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Introduction to File System Filter Drivers

Last Updated: 7/30/2016

Note For optimal reliability and performance, we recommend using file system minifilter drivers instead of legacy file system filter drivers. Also, legacy file system filter drivers can’t attach to direct access (DAX) volumes. For more about file system minifilter drivers, see Advantages of the Filter Manager Model. To port your legacy driver to a minifilter driver, see Guidelines for Porting Legacy Filter Drivers.

This section introduces file system filter drivers. It includes the following topics:

What Is a File System Filter Driver?

File System Filter Drivers Are Not Device Drivers

Installing a File System Filter Driver

Initializing a File System Filter Driver

Attaching a Filter to a File System or Volume


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