基于磁盘和固态硬盘的混合存储系统研究综述

发布时间：2019-05-06 14:34

【摘要】：大数据和云计算环境下海量增长的数据对存储系统的超高容量和体系结构带来了极大的挑战。目前存储系统的发展趋向于大容量、低成本和高性能,然而任何单一的存储器件如传统的机械磁盘(HDD)、固态硬盘(SSD)、非易失型性随机存储器等由于其固有的物理特性的限制,并不能满足以上的需求。将不同的存储介质混合组合成高效的存储系统是一个好的解决方法,固态硬盘作为一种高可靠性、低能耗、高性能的存储器被越来越广泛地运用到混合存储系统。通过将固态硬盘与传统磁盘进行组合,利用固态硬盘的高性能和传统磁盘低成本大容量的特点,能够为用户提供大容量的存储空间,保证系统的高性能,同时还能降低成本。通过阐述SSD与HDD混合存储系统的研究现状,对不同的SSD与HDD混合存储系统进行分类总结;然后针对缓存架构和设备同层架构这两种目前最流行的存储架构中涉及到的关键技术和不足进行讨论;最后对基于SSD和HDD的混合存储技术进行概括总结,并对今后该领域的研究重点和方向进行展望。
[Abstract]:Big data and the massive growth of data in cloud computing environment bring great challenges to the super-high capacity and architecture of storage system. At present, the development of storage system tends to be large capacity, low cost and high performance. However, any single memory device such as traditional mechanical disk (HDD), solid-state disk (SSD), Because of its inherent physical characteristics, non-volatile random access memory (NRAM) can not meet the above requirements. It is a good solution to combine different storage media into efficient storage system. As a kind of high reliability, low energy consumption and high performance memory, solid-state disk is widely used in hybrid storage system. By combining the solid state disk with the traditional disk, the high performance of the solid state disk and the low cost and large capacity of the traditional disk can be used to provide the users with large storage space, guarantee the high performance of the system, and reduce the cost at the same time. By expounding the research status of SSD and HDD hybrid storage system, the different SSD and HDD hybrid storage systems are classified and summarized. Then, the key technologies and shortcomings of cache architecture and device-layer architecture, which are the two most popular storage architectures at present, are discussed. Finally, the hybrid storage technology based on SSD and HDD is summarized, and the research focus and direction in this field are prospected in the future.
【作者单位】：西北工业大学计算机学院;
【基金】：国家自然科学基金青年科学基金资助项目(61303037);国家自然科学基金资助项目(61472323) 国家863计划项目(2015AA015307) 中央高校基本科研业务费专项(3102015JSJ0009)~~
【分类号】：TP333

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