Eleni Bougioukou and Theodore Antonakopoulos:

A Hybrid Device Driver for Next-Generation Solid-State Drives

The Pan-Hellenic Conference on Electronics and Telecommunications - PACET 2015, Ioannina, Greece, May 2015.

Abstract: Solid state drives (SSDs) are based on non-volatile memories, like NAND Flash, and usually support fixed size data blocks. The typical data granularity is sector (512 B) or page (4 KB). Next generation SSDs will use new memory technologies, like Phase Change Materials (PCM) or 3D NAND Flash, with more advanced characteristics, i.e. direct access of large data blocks and simultaneous support of small data chunks. For being able to support new types of applications, the SSDs must also be able to support various data sizes at their native data structures. In order to fully explore the capabilities of the underlying storage technology, this functionality requires the use of more advanced device drivers at the operating system. In this work, we present the architecture of such a hybrid Linux device driver, which supports concurrently the functionality of block and character device driver.

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