Multi-thread flash translation layer for multi-core solid state drives

NAND flash memory-based solid state drives (SSDs) have many advantages compared with Hard Disk Drives (HDDs), such as high I/O operations per second (IOPS), low power, and small form factor. However, NAND flash memory needs a flash translation layer (FTL) to manage its limitations such as erase before write and a limit of cell durability. To overcome these limitations, intensive FTL algorithms have been proposed considering the performance and wear leveling. However, with an increase in the popularity of the latest multi-core processors, it is important to study how multi-thread FTL can improve SSD performance. Therefore, in this paper, we propose a novel multi-thread FTL that considers a critical region to improve the performance of NAND flash memory by taking advantage of multi-core processors.