HAMM(Hybrid Address Mapping Method) for Increasing Logical Address Mapping Performance on Flash Translation Layer of SSD


The KIPS Transactions:PartD, Vol. 17, No. 6, pp. 383-394, Dec. 2010
10.3745/KIPSTD.2010.17.6.383,   PDF Download:

Abstract

Flash memory based SSDs are currently being considered as a promising candidate for replacing hard disks due to several superior features such as shorter access time, lower power consumption and better shock resistance. However, SSDs have different characteristics from hard disk such as difference of unit and time for read, write and erase operation and impossibility for over-writing. Because of these reasons, SSOS have disadvantages on hard disk based systems, so FTL(Flash Translation Layer) is designed to increase SSDs` efficiency. In this paper, we propose an advanced logical address mapping method for increasing SSDs` performance. which is named HAMM(Hybrid Address Mapping Method). HAMM addresses drawbacks of previous block-mapping method and super-block-mapping method and takes advantages of them. We experimented our method on our own SSDs simulator. In the experiments, we confirmed that HAMM uses storage area more efficiently than super-block-mapping method, given the same buffer size. In addition, HAMM used smaller memory than block-mapping method to construct mapping table, demonstrating almost same performance.


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Cite this article
[IEEE Style]
J. W. Lee, H. C. Roh, S. H. Park, "HAMM(Hybrid Address Mapping Method) for Increasing Logical Address Mapping Performance on Flash Translation Layer of SSD," The KIPS Transactions:PartD, vol. 17, no. 6, pp. 383-394, 2010. DOI: 10.3745/KIPSTD.2010.17.6.383.

[ACM Style]
Ji Won Lee, Hong Chan Roh, and Sang Hyun Park. 2010. HAMM(Hybrid Address Mapping Method) for Increasing Logical Address Mapping Performance on Flash Translation Layer of SSD. The KIPS Transactions:PartD, 17, 6, (2010), 383-394. DOI: 10.3745/KIPSTD.2010.17.6.383.