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Three-level page-mapping FTL scheme utilizes the characteristics of SSD hardware system, divides a plane into several parts called block-group. A block-group has a fixed number of physical blocks. In this scheme, a series of logical pages are stored in a block-group. Inside the block-group, the mapping relationship between logical page and physical page is fully associative. This scheme decreases...
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...
Given the multilevel internal SSD parallelism at the different four levels: channel-level, chip-level, die-level, and plane-level, how to exploit these levels of parallelism will directly and significantly impact the performance and endurance of SSDs, which is in turn primarily determined by three internal factors, namely, advanced commands, allocation schemes, and the priority order of exploiting...
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)...
Performance and reliability are eternal topics in storage system. Nowadays, vast majority of storage system are made up of hard disk drive. The performance and reliability of hard disk drive are very important subclass of the former. So far, most researches of hard disk drive are single benefit. Some improve performance and some enhance the reliability. It is very little production which can heighten...
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