JISE


  [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19] [20]


Journal of Information Science and Engineering, Vol. 23 No. 6, pp. 1865-1887


Design, Implementation, and Performance Evaluation of Flash Memory-based File System on Chip

Seongjun Ahn, Jongmoo Choi, Donghee Lee, Sam H. Noh, Sang Lyul Min and Yookun Cho
Department of Electrical Engineering and Computer Sciences 
Seoul National University 
Seoul, 151-742 Korea 
1Division of Information and Computer Science 
Dankook University 
Seoul, 140-714 Korea 
2School of Computer Science 
University of Seoul 
Seoul, 130-743 Korea 
3School of Information and Computer Engineering 
Hongik University 
Seoul, 121-791 Korea

    Interoperability is an important requirement for portable storage devices that are increasingly being used to exchange and share data among diverse hosts. However, interoperability cannot be provided if different host systems use different file systems. To address this problem, we propose a storage device that contains a file system within itself, which we refer to as FSOC (File System On Chip). In this paper, we explain the design and implementation of a Flash memory-based FSOC as a proof-of-concept. We also propose a performance model for FSOC, which is derived by analyzing operations of the host and storage device. Using this model, we show that aside from qualitative benefits, there are quantitative benefits in using FSOC instead of a conventional storage device. Results from a series of experiments are given that compare the performance of a conventional storage device and the FSOC using synthetic workloads as well as real applications, which verifies the proposed model.

Keywords: embedded system, file system, flash memory, interoperability, portable storage

  Retrieve PDF document (JISE_200706_14.pdf)