A Case for Heterogeneous Flash

  title={A Case for Heterogeneous Flash},
  author={Di Wang and Anand Sivasubramaniam and Bhuvan Urgaonkar},
We explore the idea of heterogeneous NAND flash which possess e pages/blocks of multiple sizes. This heterogeneity can then be exploited to accommodate the diversity in data access patterns found in most storage workloads. We i dentify various tradeoffs offered by such pages/blocks. By characterizing seven real-world I/O traces, we identify metrics that have a bearing on the efficacy as well as design of such a heterogeneous flash. We use the implications of our workload charac terization to… CONTINUE READING
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