【摘要】：云存儲作為一種新興的基于對象的數(shù)據(jù)存儲模式，，已經(jīng)成為云計算領(lǐng)域發(fā)展最早和最成熟的應(yīng)用之一。盡管云存儲技術(shù)具有巨大的市場潛力，但是在實際應(yīng)用的過程中，云存儲無法與傳統(tǒng)存儲設(shè)備和應(yīng)用進行無縫銜接，存在訪問接口不統(tǒng)一、訪問延遲大等問題。 云存儲網(wǎng)關(guān)系統(tǒng)實現(xiàn)了多個云存儲平臺接口的統(tǒng)一管理，通過緩存管理和熱點數(shù)據(jù)遷移降低客戶端訪問延遲，通過選擇性價比高的云存儲平臺降低存儲成本，通過跨云平臺數(shù)據(jù)遷移實現(xiàn)云平臺之間的互操作。系統(tǒng)由4個模塊構(gòu)成，基本操作模塊監(jiān)聽并接收從客戶端發(fā)送過來的訪問請求，通過用戶驗證連接云存儲平臺，對請求進行響應(yīng)。云平臺統(tǒng)一管理模塊將云存儲網(wǎng)關(guān)存儲池中的數(shù)據(jù)上傳到合適的云存儲平臺，構(gòu)建和管理云平臺與網(wǎng)關(guān)存儲節(jié)點間的文件映射表，并實現(xiàn)多個云存儲平臺的統(tǒng)一管理。熱點數(shù)據(jù)遷移模塊定時獲取存儲節(jié)點的狀態(tài)信息，根據(jù)節(jié)點狀態(tài)選取部分熱點數(shù)據(jù)，遷往合適的目的存儲節(jié)點緩存，并根據(jù)請求自主遷回部分熱點數(shù)據(jù)�？缭破脚_數(shù)據(jù)遷移模塊從云存儲平臺上下載待遷移數(shù)據(jù)緩存至網(wǎng)關(guān)存儲節(jié)點，接著將數(shù)據(jù)上傳至目的云存儲平臺，然后同步文件映射表。 采用多版本的系統(tǒng)和軟件安裝鏡像以及流媒體文件，對系統(tǒng)的功能和性能進行測試。測試結(jié)果表明，系統(tǒng)對多平臺的統(tǒng)一管理功能、熱點數(shù)據(jù)遷移功能、云平臺統(tǒng)一管理下載功能和跨云平臺數(shù)據(jù)遷移功能都能正常運行。當請求數(shù)據(jù)緩存在網(wǎng)關(guān)內(nèi)時，存儲節(jié)點響應(yīng)速度是云端響應(yīng)速度的5-30倍。依據(jù)阿里云和盛大云平臺的收費標準，本系統(tǒng)的存儲成本僅是無網(wǎng)關(guān)系統(tǒng)的六分之一，存儲成本降低了86.1%。
[Abstract]:Cloud storage, as a new object based data storage mode, has become one of the earliest and most mature applications in cloud computing. Although cloud storage technology has great market potential, cloud storage can not connect seamlessly with traditional storage devices and applications in the process of practical application, and there are many problems such as disunity of access interface, large access delay and so on. Cloud storage gateway system realizes unified management of multiple cloud storage platform interfaces, reduces client access delay through cache management and hot data migration, and reduces storage cost by selecting cloud storage platform with high performance and price ratio. The interoperability between cloud platforms is realized through data migration across cloud platforms. The system is composed of four modules. The basic operation module listens on and receives the access request sent from the client, connects the cloud storage platform through the user verification, and responds to the request. The cloud platform unified management module uploads the data in the cloud storage gateway storage pool to the suitable cloud storage platform, constructs and manages the file mapping table between the cloud platform and the gateway storage node, and realizes the unified management of multiple cloud storage platforms. The hot data migration module acquires the state information of the storage node periodically, selects part of the hot data according to the node state, moves to the appropriate destination storage node cache, and moves back part of the hot spot data independently according to the request. The data migration module downloads the data to the gateway storage node from the cloud storage platform, then uploads the data to the destination cloud storage platform, and then synchronizes the file mapping table. The function and performance of the system are tested by multi-version system and software installation mirror and streaming media file. The test results show that the unified management function, hot data migration function, unified management and download function of cloud platform and data migration function across cloud platform can all run normally. When the request data is cached in the gateway, the response speed of the storage node is 5-30 times faster than that of the cloud. According to the charge standard of Ali cloud and Shanda cloud platform, the storage cost of this system is only 1/6 of that of no gateway system, and the storage cost is reduced by 86.1.
【學(xué)位授予單位】：華中科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2013
【分類號】：TP333

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1 高建秀;吳振新;孫碩;;云存儲在數(shù)字資源長期保存中的應(yīng)用探討[J];現(xiàn)代圖書情報技術(shù);2010年06期

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