Emerging Usage and Evaluation of Low Latency FLASH

Storage class memory (SCM) is expected to fill the gap between DRAM and flash SSD Storage. In this paper, we introduce XL-FLASH™, a cost effective flash based SCM, and the XL-FLASH demo drive featuring a low penalty low latency DMA control interface. We show the evaluation result of achieving equivalent performance between in-memory database and the proposed key-value store database using XL-FLASH demo drive. This result demonstrates the possibility of replacing DRAM with XL-FLASH in a key-value store database application, for highly concurrent read intensive use cases.