• DOI:10.1145/2541940.2541959
Corpus ID: 207209683

SDF: software-defined flash for web-scale internet storage systems

@article{Ouyang2014SDFSF,
  title={SDF: software-defined flash for web-scale internet storage systems},
  author={Jian Ouyang and Shiding Lin and J. Song and Zhenyu Hou and Yong Wang and Yuanzheng Wang},
  journal={Proceedings of the 19th international conference on Architectural support for programming languages and operating systems},
  year={2014}
}

Jian Ouyang, Shiding Lin, +3 authors Yuanzheng Wang

Published 2014

Computer Science

Proceedings of the 19th international conference on Architectural support for programming languages and operating systems

In the last several years hundreds of thousands of SSDs have been deployed in the data centers of Baidu, China's largest Internet search company. Currently only 40\% or less of the raw bandwidth of the flash memory in the SSDs is delivered by the storage system to the applications. Moreover, because of space over-provisioning in the SSD to accommodate non-sequential or random writes, and additionally, parity coding across flash channels, typically only 50-70\% of the raw capacity of a commodity… CONTINUE READING

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