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SSDs exhibit very different failure characteristics compared to hard drives. In particular, the bit error rate (BER) of an SSD climbs as it receives more writes. As a result, RAID arrays composed from SSDs are subject to correlated failures. By balancing writes evenly across the array, RAID...
This work is motivated by a strong market demand for the replacement of NOR flash memory with NAND flash memory to cut down the cost of many embedded-system designs, such as mobile phones. Different from LRU-related caching or buffering studies, we are interested in prediction-based prefetching...
With the development of storage technology and applications, new caching policies are continuously being introduced. It becomes increasingly important for storage systems to be able to select the matched caching policy dynamically under varying workloads. This article proposes SOPA, a cache...
The modern hard disk drive is a complex and complicated device. It consists of 2--4 heads, thousands of sectors per track, several hundred thousands of tracks, and tens of zones. The beginnings of adjacent tracks are placed with a certain angular offset. Sectors are placed on the tracks and...
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