本文選題：海量存儲　切入點：視頻存儲　出處：《軟件學報》2017年08期 　論文類型：期刊論文

【摘要】：通過對視頻監(jiān)控數(shù)據(jù)的特點和傳統(tǒng)存儲方案進行分析,提出一種高性能分布式存儲系統(tǒng)解決方案.不同于傳統(tǒng)的基于文件存儲的方式,設(shè)計了一種邏輯卷結(jié)構(gòu),將非結(jié)構(gòu)化的視頻流數(shù)據(jù)以此結(jié)構(gòu)進行組織并直接寫入RAW磁盤設(shè)備,解決了傳統(tǒng)存儲方案中隨機磁盤讀寫和磁盤碎片導致存儲性能下降的問題.該方案將元數(shù)據(jù)組織為兩級索引結(jié)構(gòu),分別由狀態(tài)管理器和存儲服務(wù)器管理,極大地減少了狀態(tài)管理器需要管理元數(shù)據(jù)的數(shù)量,消除了性能瓶頸,并提供了精確到秒級的檢索精度.此外,該方案靈活的存儲服務(wù)器分組策略和組內(nèi)互備關(guān)系使得存儲系統(tǒng)具備容錯能力和線性擴展能力.系統(tǒng)測試結(jié)果表明,該方案在成本低廉的PC服務(wù)器上實現(xiàn)了單臺服務(wù)器可同時記錄400路1080P視頻流,寫入速度是本地文件系統(tǒng)的2.5倍.
[Abstract]:By analyzing the characteristics of video surveillance data and the traditional storage scheme, presents a solution of high performance distributed storage system. File storage based on the way different from the traditional design, a logical volume structure, non structured video data stream based on the structure of the organization and write directly to RAW disk devices, to solve the traditional random read and write disk storage scheme and storage disk fragmentation leads to the problem of declining performance. The program will be organized into two level index structure of metadata, respectively by the state management and storage management server, which greatly reduces the number of state manager to manage the metadata, eliminate performance bottlenecks, and to provide accurate retrieval precision seconds class. In addition, the flexible storage server grouping strategies and intragroup preparation makes storage system has the fault-tolerant ability and linear expansion capability. The test results show that the scheme implements a single server on a low cost PC server. It can record 400 1080P video streams at the same time, and the writing speed is 2.5 times that of the local file system.

【作者單位】： 武漢光電國家實驗室(華中科技大學);華中科技大學計算機科學與技術(shù)學院;
【基金】：國家重點研發(fā)計劃(2016YFB1000202)~~
【分類號】：TN948.6;TP333

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1 陳霄;分布式噴泉碼在分布式存儲系統(tǒng)中的應用模型與方法研究[D];電子科技大學;2013年

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