A case for heterogeneous flash in the datacenter

Di Wang; Anand Sivasubramaniam; Bhuvan Urgaonkar

doi:10.1109/ICDCSW.2013.65

A case for heterogeneous flash in the datacenter

Di Wang, Anand Sivasubramaniam, Bhuvan Urgaonkar

Research output: Contribution to conference › Paper › peer-review

1 Scopus citations

Abstract

We explore the idea of heterogeneous NAND flash which possesses pages and blocks of multiple sizes. This heterogeneity can then be exploited to accommodate the diversity in data access patterns found in most datacenter storage workloads. We identify various tradeoffs offered by such pages and 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 observations of our workload characterization to discuss the pros and cons of different implementation styles, management schemes and implications for datacenters.

Original language	English (US)
Pages	220-225
Number of pages	6
DOIs	https://doi.org/10.1109/ICDCSW.2013.65
State	Published - Dec 1 2013
Event	33rd IEEE International Conference on Distributed Computing Systems Workshops, ICDCSW 2013 - Philadelphia, PA, United States Duration: Jul 8 2013 → Jul 11 2013

Other

Other	33rd IEEE International Conference on Distributed Computing Systems Workshops, ICDCSW 2013
Country/Territory	United States
City	Philadelphia, PA
Period	7/8/13 → 7/11/13

All Science Journal Classification (ASJC) codes

Software
Hardware and Architecture
Computer Networks and Communications

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10.1109/ICDCSW.2013.65

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AB - We explore the idea of heterogeneous NAND flash which possesses pages and blocks of multiple sizes. This heterogeneity can then be exploited to accommodate the diversity in data access patterns found in most datacenter storage workloads. We identify various tradeoffs offered by such pages and 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 observations of our workload characterization to discuss the pros and cons of different implementation styles, management schemes and implications for datacenters.

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A case for heterogeneous flash in the datacenter

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