Design of an Efficient FTL Algorithm Exploiting Locality Based on Sector-level Mapping 


Vol. 36,  No. 7, pp. 818-826, Jul.  2011


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  Abstract

This paper proposes a novel FTL (Flash Translation Layer) algorithm employing sector-level mapping technique based on locality to reduce the number of erase operations in flash memory accesses. Sector-level mapping technique shows higher performance than other mapping techniques, even if it requires a large mapping table. The proposed algorithm reduces the size of mapping table by employing dynamic table update, processes sequential writes by exploiting sequential locality and extracts hot sector in random writes. Experimental results show that the number of erase operations has been reduced by 75.4%, 65.8%, and 10.3% respectively when compared with well-known BAST, FAST and sector mapping algorithms.

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  Cite this article

[IEEE Style]

S. Hong and S. Hwang, "Design of an Efficient FTL Algorithm Exploiting Locality Based on Sector-level Mapping," The Journal of Korean Institute of Communications and Information Sciences, vol. 36, no. 7, pp. 818-826, 2011. DOI: .

[ACM Style]

Soo-Jin Hong and Sun-Young Hwang. 2011. Design of an Efficient FTL Algorithm Exploiting Locality Based on Sector-level Mapping. The Journal of Korean Institute of Communications and Information Sciences, 36, 7, (2011), 818-826. DOI: .

[KICS Style]

Soo-Jin Hong and Sun-Young Hwang, "Design of an Efficient FTL Algorithm Exploiting Locality Based on Sector-level Mapping," The Journal of Korean Institute of Communications and Information Sciences, vol. 36, no. 7, pp. 818-826, 7. 2011.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880