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Owing to their relatively high random-I/O performance and energy-efficiency, SSDs have been widely deployed in data-intensive computing environments as caching and/or terminal storage devices. The buffer-cache of an SSD plays an essential role in bridging the speed gap between the flash components and the host interface. While the existing SSD buffer management schemes are designed to improve SSD...
Flash memory SSDs pose a well-known challenge, that is, the erase-before-write problem. Researchers try to solve this inherent problem from two different angles by either designing sophisticated Flash Translation Layer (FTL) schemes to postpone and minimize erasures or designing flash-aware buffer management algorithms to absorb unnecessary erasures. Our experimental results show that buffer management...
Flash Translation Layer (FTL) is one of the most important components of SSD, whose main purpose is to perform logical to physical address translation in a way that is suitable to the unique physical characteristics of the Flash memory technology. The pure page-mapping FTL scheme, arguably the best FTL scheme due to its ability to map any logical page number (LPN) to any physical page number (PPN)...
A single flash-based Solid State Drive (SSD) can not satisfy the capacity, performance and reliability requirements of a modern storage system supporting increasingly demanding data-intensive computing applications. Applying RAID schemes to SSDs to meet these requirements, while a logical and viable solution, faces many challenges. In this paper, we propose a Hybrid Parity-based Disk Array architecture,...
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