面向航天应用的对象存储系统设计  

Design of Object Storage System for Aerospace Application

作　　者：宫永生[1,2] 吕从民 曹素芝[1] GONG Yongsheng;LYU Congmin;CAO Suzhi(Technology and Engineering Center for Space Utilization,Chinese Academy of Sciences,Beijing 100094,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院空间应用工程与技术中心,北京100094 [2]中国科学院大学,北京100049

出　　处：《载人航天》2021年第1期100-106,共7页Manned Spaceflight

基　　金：载人航天领域预先研究项目(18022010301)。

摘　　要：针对空间站等大型航天器面临的网络化、海量、高可靠、可扩展数据存储难题,研究航天对象存储系统方案,提出了与空间数据特征格式匹配的数据对象定义方法,并在此基础上设计了完整的分布式系统架构及协议,对系统的元数据和用户数据备份策略进行研究,最终构建了基于嵌入式系统的完整对象存储系统,并进行测试验证。验证结果表明:设计的对象存储系统能够很好地适应小规模空间应用场景,单节点存储带宽大于3.1 Gbps,网络带宽利用率大于90%;系统总存储带宽随着存储节点数量近似线性增加,系统具有良好的扩展性。Large spacecraft like the space station faces many challenges in data storage such as network storage,massive data,high reliability,and high scalability etc.In this paper,the scheme of object storage system for space application was studied,the defining method for data object matching the characteristics of space data format was proposed,and a complete distributed system including architecture and protocols was designed.In addition,the backup strategy of metadata and user data of the system was studied.Finally,a complete object storage system based on embedded system was constructed and tested.The verification results showed that the designed object storage system could well adapt to the small-scale space application scenarios,the single node storage bandwidth was more than 3.1 Gbps,and the network bandwidth utilization rate was more than 90%;the total storage bandwidth of the system increased linearly with the number of storage nodes,and the system had good scalability.

关 键 词：对象存储 网络存储 分布式系统 航天应用 

分 类 号：V19[航空宇航科学与技术—人机与环境工程]