Improving Flash-based Disk Cache with Lazy Adaptive Replacement

Provided by: Institute of Electrical & Electronic Engineers
Topic: Storage
Format: PDF
The increasing popularity of flash memory has changed storage systems. Flash-based Solid State Drive (SSD) is now widely deployed as cache for magnetic Hard Disk Drives (HDD) to speed up data intensive applications. However, existing cache algorithms focus exclusively on performance improvements and ignore the write endurance of SSD. In this paper, the authors proposed a novel cache management algorithm for flash-based disk cache, named Lazy Adaptive Replacement Cache (LARC). LARC can filter out seldom accessed blocks and prevent them from entering cache.

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