On the management of multichannel architectures of solid-state disks

Li-Pin Chang*, Yi Hsun Huang, Chen Yi Wen

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Scopus citations

Abstract

Solid-state disks use arrays of flash-memory chips for data storage. They adopt multichannel architectures to exploit parallelism among flash operations. Under real disk workloads, a channel spends nearly the same amount of time on writing host data and collecting garbage. Thus, the key to the success of multichannel architectures is to achieve high parallelism among channel operations under these two kinds of activities. This study presents a channel management scheme that comprises a write-buffer design and two channel management policies. The proposed scheme is designed to be generic, and it is applicable to both hybrid mapping and page-level mapping. Our experimental results show that the proposed management scheme doubles the average number of write requests completed per second (e.g., write IOPS) of a baseline multichannel architecture. We also successfully implemented the proposed scheme in a real solid-state disk and demonstrated the feasibility of our approach.

Original languageEnglish
Title of host publication2011 9th IEEE Symposium on Embedded Systems for Real-Time Multimedia, ESTIMedia 2011
Pages37-45
Number of pages9
DOIs
StatePublished - 22 Dec 2011
Event2011 9th IEEE Symposium on Embedded Systems for Real-Time Multimedia, ESTIMedia 2011 - Taipei, Taiwan
Duration: 13 Oct 201114 Oct 2011

Publication series

Name2011 9th IEEE Symposium on Embedded Systems for Real-Time Multimedia, ESTIMedia 2011

Conference

Conference2011 9th IEEE Symposium on Embedded Systems for Real-Time Multimedia, ESTIMedia 2011
CountryTaiwan
CityTaipei
Period13/10/1114/10/11

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    Chang, L-P., Huang, Y. H., & Wen, C. Y. (2011). On the management of multichannel architectures of solid-state disks. In 2011 9th IEEE Symposium on Embedded Systems for Real-Time Multimedia, ESTIMedia 2011 (pp. 37-45). [6088524] (2011 9th IEEE Symposium on Embedded Systems for Real-Time Multimedia, ESTIMedia 2011). https://doi.org/10.1109/ESTIMedia.2011.6088524