Hybrid solid-state disks: Combining heterogeneous NAND flash in large SSDs

Li-Pin Chang*

*此作品的通信作者

研究成果: Conference contribution同行評審

92 引文 斯高帕斯(Scopus)

摘要

NAND-flash-based SSDs (solid-state disks) are recently used in embedded computers to replace power-hungry disks. This paper presents a hybrid approach to large SSDs, which combines MLC flash and SLC flash. The idea is to complement the drawbacks of the two kinds of NAND flash with each other's advantages. The technical issues of the design of a hybrid SSD pertain to data placement and wear leveling over heterogeneous NAND flash. Our experimental results show that, by adding a 256 MB SLC flash to a 20 GB MLC-flash array, the hybrid SSD improves over a conventional SSD by 4.85 times in terms of average response. The average throughput and energy consumption are improved by 17 % and 14%, respectively. The hybrid SSD is only 2% more expensive than a purely MLC-flash-based SSD, for which the extra cost is limited and very rewarded.

原文English
主出版物標題2008 Asia and South Pacific Design Automation Conference, ASP-DAC
頁面428-433
頁數6
DOIs
出版狀態Published - 2008
事件2008 Asia and South Pacific Design Automation Conference, ASP-DAC - Seoul, Korea, Republic of
持續時間: 21 3月 200824 3月 2008

出版系列

名字Proceedings of the Asia and South Pacific Design Automation Conference, ASP-DAC

Conference

Conference2008 Asia and South Pacific Design Automation Conference, ASP-DAC
國家/地區Korea, Republic of
城市Seoul
期間21/03/0824/03/08

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