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A File System for Large-scale NAND Flash Memory Based Storage System

  • Journal of The Korea Society of Computer and Information
  • Abbr : JKSCI
  • 2017, 22(9), pp.1-8
  • DOI : 10.9708/jksci.2017.22.09.001
  • Publisher : The Korean Society Of Computer And Information
  • Research Area : Engineering > Computer Science
  • Received : August 22, 2017
  • Accepted : September 5, 2017
  • Published : September 29, 2017

Sunghoon Son 1

1상명대학교

Accredited

ABSTRACT

In this paper, we propose a file system for flash memory which remedies shortcomings of existing flash memory file systems. Besides supporting large block size, the proposed file system reduces time in initializing file system significantly by adopting logical address comprised of erase block number and bitmap for pages in the block to find a page. The file system is suitable for embedded systems with limited main memory since it has small in-memory data structures. It also provides efficient management of obsolete blocks and free blocks, which contribute to the reduction of file update time. Finally the proposed file system can easily configure the maximum file size and file system size limits, which results in portability to emerging larger flash memories. By conducting performance evaluation studies, we show that the proposed file system can contribute to the performance improvement of embedded systems.

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