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作 者:傅雨东 李小勇[1] FU Yu-dong;LI Xiao-yong(School of Cyber Security,Shanghai Jiaotong University,Shanghai 200240,Chin)
机构地区:[1]上海交通大学网络空间安全学院,上海200240
出 处:《信息技术》2018年第7期103-106,112,共5页Information Technology
摘 要:磁盘目前仍是存储系统所使用的主要存储器件,但由于磁头机械移动的限制,磁盘的随机访问性能长期都是瓶颈所在。近年来兴起的SSD(Solid State Disk,也称为固态盘)具有随机访问性能好、体积小、能耗低等优点,但有价格高、容量小、需写前擦除及耐久性等限制。因此将固态盘与磁盘结合的混合式存储可以使两者形成良好的互补。文中综述了混合式存储系统的研究现状。首先,介绍了混合式存储系统的基本原理和概念,然后分析了混合存储系统中的一些关键问题,之后对目前几种开源混合存储框架进行了分析研究对比,最后指出了混合存储系统未来的研究方向。The disk is still the primary storage device used by the storage system. But due to the limitations of the disk head movement,the disk's random access performance is still the bottleneck. In recent years SSD(Solid State Disk) shows the advantages of good random access performance,small size,low energy consumption,although there are also disadvantages such as high prices,small capacity,need to write before the erase and durability restrictions. So hybrid storage system based on SSD and HDD can make the two form a good complement. This paper summarizes the research status of hybrid storage system. Firstly,the basic principles and concepts of hybrid storage system are introduced.Secondly,some key problems in hybrid storage system are analyzed. Then some kinds of open source hybrid storage frameworks are analyzed and compared. Finally,it points out some future work.
分 类 号:TP333[自动化与计算机技术—计算机系统结构]
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