Flash Memory System
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 Dynamic Throttling
1. Research goal
  • The limited lifetime caused by poor write endurance is a main barrier for wider adoption of SSDs in the enterprise market
  • Provide the reasonable SSD lifetime (e.g., 3-5 years)
  • 2. Our approaches: REcovery-Aware DYnamic throttling (READY)
  • Throttle the SSD performance to guarantee the required SSD lifetime
  • Exploit the self-recovery effect of NAND flash memory to reduce the performance degradation caused by performance throttling
  • 3. Published papers
  • Sungjin Lee, Taejin Kim, Kyungho Kim, and Jihong Kim, "Lifetime Management of Flash-­Based SSDs Using Recovery-­Aware Dynamic Throttling ," USENIX Conference on File and Storage Technologies (FAST ‘12), San Jose, USA, pp. 327-340, February 14­-17, 2012
  • Sungjin Lee, Taejin Kim, Kyungho Kim, and Jihong Kim, "Guaranteeing the Lifetime of SSDs Using Recovery­-Aware Dynamic Throttling," International Conference on Memory Architecture and Organization Workshop (MeAOW ‘11) in conjunction with ESWEEK 2011, Taipei, Taiwan, October 13, 2011
  • 4. Related patents
  • 김지홍, 이성진, 김경호, 김상목, 박현철, 배오태, 정정훈, 이동기, "스토리지의 동작 성능 조절방법 및 그에 따른 반도체 저장장치," 한국 특허 출원 번호 10-2011-0113217, 2011.11.02
  • Jeonghoon Jeong, Jihong Kim, Sungjin Lee, Kyung Ho Kim, Sangmok Kim, Hyunchul Park, Otae Bae, and Donggi Lee, "METHOD FOR ADJUSTING PERFORMANCE OF A STORAGE DEVICE AND A SEMICONDUCTOR STORAGE DEVICE THEREFOR," U.S. Application Number 10-2011-0113217, 02 Nobember, 2011