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CPR for SSDs
Cited 4 time in
Web of Science
Cited 3 time in Scopus
- Authors
- Issue Date
- 2019-05
- Publisher
- ASSOC COMPUTING MACHINERY
- Citation
- PROCEEDINGS OF THE WORKSHOP ON HOT TOPICS IN OPERATING SYSTEMS (HOTOS '19), pp.201-208
- Abstract
- Modern storage systems are built upon the assumption that the capacity of a storage device does not change. This capacity-invariant interface forces a flash-based storage device to trade performance for reliability when, in fact, it can maintain both if a graceful reduction in capacity were to be allowed. We argue that relaxing the fixed capacity abstraction of the storage device allows for a better capacity-performancereliability (CPR) tradeoff. We then outline existing deviceinternal mechanisms for building a capacity-variant flash device, and describe the necessary changes in the storage stack.
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