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다양한 메모리 셀을 결합한 디스크형 플래쉬 메모리 시스템

Flash Memory System for Solid-state Disk by Using Various Memory Cells

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Abstract

We present a flash memory system with low cost and high performance for solid-state disk. The proposed flash system is constructed as a SLC with hot blocks and a MLC with cold blocks. Either the SLC or the MLC is selectively accessed on the basis of a position bit in a mapping table. Our results show that the system enables the SLC size to be reduced by about 80% relative to a conventional SLC while maintaining similar performance. And also, our system can improve a performance by above 60% comparing with a conventional MLC.

참고문헌 (8)

  1. Keizo Saisho and Akira Fukuda, "Effect of Memory Allocation on Flash Memory File System", IPSJ JOURNAL, 42(6) (2001)
  2. D. Jung, "A group-based wear-leveling algorithm for large-capacity flash memory storage systems", In Proc, of the 2007 Int. conf. on compilers, architecture, and synthesis for embedded systems, pp.160~164 (2007)
  3. J. R. Lorch, "Software Strategies for Portable Computer Energy Management", Personal Communications Magazine, 5, pp.60~73 (1998)
  4. "NAND Flash Memory & SmartMedia Data Book", Samsung Electronics, ~ (2002)
  5. "NAND-type Flash Memory"[URL]
  6. "Flash memory"[URL]
  7. C. Park, "Cost-Efficient Memory Architecture Design of NAND Flash Memory Embedded Systems", IEEE International Conference on Computer Design(ICCD 2003), pp.474~480 (2003)

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