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Seo, Euiseong
School of Electrical and Computer Engineering
Research Interests
  • System software for flash memory

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A comprehensive study of energy efficiency and performance of flash-based SSD

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Title
A comprehensive study of energy efficiency and performance of flash-based SSD
Author
Park, SeonyeongKim, YoungjaeUrgaonkar, BhuvanLee, JoonwonSeo, Euiseong
Keywords
Energy; Filesystems; Power; SSD; Storage
Issue Date
201104
Publisher
ELSEVIER SCIENCE BV
Citation
JOURNAL OF SYSTEMS ARCHITECTURE, v.57, no.4, pp.354 - 365
Abstract
Use of flash memory as a storage medium is becoming popular in diverse computing environments. However, because of differences in interface, flash memory requires a hard-disk-emulation layer, called FTL (flash translation layer). Although the FTL enables flash memory storages to replace conventional hard disks, it induces significant computational and space overhead. Despite the low power consumption of flash memory, this overhead leads to significant power consumption in an overall storage system. In this paper, we analyze the characteristics of flash-based storage devices from the viewpoint of power consumption and energy efficiency by using various methodologies. First, we utilize simulation to investigate the interior operation of flash-based storage of flash-based storages. Subsequently, we measure the performance and energy efficiency of commodity flash-based SSDs by using microbenchmarks to identify the block-device level characteristics and macrobenchmarks to reveal their filesystem level characteristics.
URI
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DOI
http://dx.doi.org/10.1016/j.sysarc.2011.01.005
ISSN
1383-7621
Appears in Collections:
ECE_Journal Papers

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