A caching-oriented management design for the performance enhancement of solid-state drives

  • Authors:
  • Yuan-Hao Chang;Cheng-Kang Hsieh;Po-Chun Huang;Pi-Cheng Hsiu

  • Affiliations:
  • Academia Sinica, Taiwan, Republic of China;Academia Sinica, Taiwan, Republic of China;National Taiwan University, Taiwan, Republic of China;Academia Sinica, Taiwan, Republic of China

  • Venue:
  • ACM Transactions on Storage (TOS)
  • Year:
  • 2012

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Abstract

While solid-state drives are excellent alternatives to hard disks in mobile devices, a number of performance and reliability issues need to be addressed. In this work, we design an efficient flash management scheme for the performance improvement of low-cost MLC flash memory devices. Specifically, we design an efficient flash management scheme for multi-chipped flash memory devices with cache support, and develop a two-level address translation mechanism with an adaptive caching policy. We evaluated the approach on real workloads. The results demonstrate that it can improve the performance of multi-chipped solid-state drives through logical-to-physical mappings and concurrent accesses to flash chips.