Data deduplication technology applied in solid state disks (SSD), can reduce the amount of write operations and garbage collection, and thus improve writing performance and prolong lifetime. With the significant increase of write performance onto SSD, whether deduplication based on SSD could be a performance bottleneck of SSD comes to a spot worthy of our attention. To this end, this paper, firstly, performs an experiment on achieving deduplication via software method, and reveals that software-based deduplication decreases SSD's read and write performance. And then a hardware-based deduplication with details is proposed and implemented to accelerate deduplication using FPGA, and expected results are achieved. Finally, we come to the conclusion that hardware-based deduplication can not only guarantee read and write performance of SSD, but also save storage capacity and enhance endurance.
Efficient Key-Value Data Placement for ZNS SSD
