Dynamic Sector Remapping for Flash-Storage Lifetime Enhancement

• Main Authors: Liao, Hsiu-Fen, 廖秀芬
• Other Authors: Chang, Li-Ping
• Format: Others
• Language: zh-TW
• Published: 2009
• Online Access: http://ndltd.ncl.edu.tw/handle/hs5j36

碩士 === 國立交通大學 === 資訊學院資訊科技產業專班 === 98 === As the flash technology dramatically develop, improving the capacity and stability of flash memory. Now flash memory is the key component of embedded system storage system. However the wear-out situation caused by the lifetime is still the major problem of flash memory. Wear-leveling algorithm is important for every flash system design. For extend the flash memory lifetime, there are many related work proposed. By these algorithms, it can improve the flash memory lifetime. WinCE is current main stream platform on the marketing. However it has higher software authorize cost is known. This thesis focus on the problem of WinCE software authorize cost. We propose a file system architecture called RLFAL. By using RLFAL make it possible to improve the wear-leveling effect on the original WinCE platform without modifying any original flash related architecture. RLFAL is consistent of three main part, LRU table, FIFO Queue and remap policy. By simulation we improve that RLFAL can reduce the develop cost, and improving the wear-leveling effect of original platform.