Sub-grouped superblock management for high-performance flash storages
Publication Date
2009
Journal or Book Title
IEICE ELECTRONICS EXPRESS
Abstract
In this paper we describe a new superblock management scheme to overcome the problem of increased erase operations, that results from increasing the degree of interleaving of memory banks in. ash memory based storage devices. To improve performance, superblock management is used to increase the degree of linear interleaving of. ash memory banks. However, increased interleaving may significantly increase the number of erase operations, thus decreasing device lifetime. The proposed management scheme efficiently separates hot and cold data into two different sub-groups, dramatically increasing the efficiency of superblock merging. According to our simulation results, the number of erase operations decreases by around 27.3 percent, which is enough to significantly lengthen overall device lifetime. Read performance is only slightly degraded by our approach.
DOI
http://dx.doi.org/10.1587/elex.6.297
Pages
297-303
Volume
6
Issue
6
Recommended Citation
Park, J; Park, GH; Weems, C; and Kim, S, "Sub-grouped superblock management for high-performance flash storages" (2009). IEICE ELECTRONICS EXPRESS. 1235.
http://dx.doi.org/10.1587/elex.6.297