Title
A Page Lifetime-Aware Scrubbing Scheme For Improving Reliability Of Flash-Based Ssd
Abstract
Solid-state drive (SSD) has gain prevalence in consumer and enterprise storage markets. However, its reliability is declining with the wearing of the Flash memory. The error correcting codes (ECCs) are generally applied in SSD to cope with bit errors caused by abrasion, however, the lifetime of pages in Flash is still limited to their fixed correctability. Due to different process and usage, the pages of Flash deteriorate in different speeds, which limited the service time of SSD. In order to prolong the lifetime of SSD, we proposed a Page Lifetime-aware Scrubbing (LaScrub) scheme to find dangerous pages which exist more bit errors. The simulation results show the proposed scheme is able to enhance the reliability of SSD. It gains 86% storage space compared with normal SSD at the same reliability requirement.
Year
DOI
Venue
2017
10.1587/elex.14.20170831
IEICE ELECTRONICS EXPRESS
Keywords
Field
DocType
solid-state disk, Flash, lifetime, scrubbing scheme, reliability, LaScrub
Computer science,Data scrubbing,Computer hardware,Embedded system
Journal
Volume
Issue
ISSN
14
22
1349-2543
Citations 
PageRank 
References 
0
0.34
10
Authors
6
Name
Order
Citations
PageRank
Nan Li12828.52
Qiyou Xie211.03
Yinan Wang3279.85
Xiangyu Liu45114.10
Husheng Liu564.20
Wei Yi663.14