A Cache-Based Flash Translation Layer for TLC-Based Multimedia Storage Devices

作者：Kwon Se Jin^*

来源：ACM Transactions on Embedded Computing Systems, 2016, 15(1): 11.

DOI：10.1145/2820614

• Storage
• Algorithm
• Performance
• Solid-state drive
• flash memory
• firmware

Current triple-level cell (TLC)-based solids-tate drives used in multimedia storage devices support multichannel access to increase capacity and throughput. Unfortunately, current state-of-the-art FTL algorithms must employ selective caching for inquiring about the address mapping information, which causes low space utilization, a large flash memory requirement, and performance degradation. In this article, the Cache based Flash Translation Layer (Cab-FTL) is proposed for TLC-based multimedia storage devices. Cab-FTL enhances the read and write performances by achieving high space utilization while reducing the size of the mapping tables to 1.68% compared to DFTL. Despite a caching of the mapping tables in DRAM, Cab-FTL achieves a fast system boot using its fast wake-up mechanism.

• 出版日期2016