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Flash memory-based non-volatile cache (NVC) is emerging as an effective solution for enhancing both the performances and the energy consumptions of storage systems. In order to attain significant performance and energy gains from NVC, it would be better to use multi-level-cell (MLC) flash memories since they can provide a large NVC capacity at low cost. However, the number of available program/erase...
This work explores the unique characteristics of flash memory in serving as a cache layer for disks. The experiments show that the proposed management scheme could save up to 20% energy consumption while reduce the read response time by the two third and the write response time by the five sixth of their counterparts. The estimated lifetime of the flash-memory cache is significantly improved as well.
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