董玉 管群

摘要：隨著網(wǎng)絡(luò)帶寬的不斷增長(zhǎng)，通過(guò)網(wǎng)絡(luò)訪問(wèn)非本地的計(jì)算服務(wù)的條件越來(lái)越成熟，于是就有了我們稱(chēng)作“云計(jì)算”的技術(shù)。云計(jì)算能夠給用戶(hù)提供可靠的、自定義的、最大化資源利用的服務(wù),是一種嶄新的分布式計(jì)算模式。隨著對(duì)云計(jì)算應(yīng)用的不斷擴(kuò)大和深入，對(duì)云計(jì)算的性能提出了更高的需求，因此，很多研究員也在努力提高對(duì)云計(jì)算的性能。文章闡述了云計(jì)算的基本概念，并在此基礎(chǔ)上介紹了云計(jì)算領(lǐng)域里的數(shù)據(jù)計(jì)算與數(shù)據(jù)存儲(chǔ)的相關(guān)技術(shù)，重點(diǎn)介紹了多用戶(hù)隔離機(jī)制，最后預(yù)測(cè)了云計(jì)算的發(fā)展及其未來(lái)。關(guān)鍵詞：云計(jì)算；數(shù)據(jù)計(jì)算；數(shù)據(jù)存儲(chǔ)；隔離機(jī)制

中圖分類(lèi)號(hào)：TP393文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1009-3044(2012)16-3803-03

Data Computation and Data Storage in Cloud Computing

DONG Yu , GUAN Qun

(College of Computer Science, Sichuan University, Chengdu 610065, China)

Abstract: With the continuous growth of the network bandwidth, the conditions are more mature that access non-local computing servic? es through the network, so there is a technology what we call "cloud computing".The cloud computing is a new application model for de? centralized computing which can provide reliable, customized and maximum number of users with minimum resource.With the constantly expanding and deepening of the cloud computing applications, it asks for higher demand, therefore, many researchers also strive to improve the cloud computing performance. The article explains the basic concepts of cloud computing. and on this basis, it also introduced the technology of data computation and data storage, it has a detailed description to the multi-user isolation mechanism, and finally to predict the development of cloud computing and its future.

Key words: cloud computing; data computation; data storage; isolation mechanism

云計(jì)算[1]是I T基礎(chǔ)設(shè)施的交付和使用模式，它指的是通過(guò)網(wǎng)絡(luò)以按需、易擴(kuò)展的方式獲得所需的資源（硬件、平臺(tái)、軟件）。提供資源的網(wǎng)絡(luò)被稱(chēng)為“云”。“云”中的資源在使用者看來(lái)是可以無(wú)限擴(kuò)展的，并且可以隨時(shí)獲取，按需使用，隨時(shí)擴(kuò)展，按使用付費(fèi)。這種特性經(jīng)常被稱(chēng)為像水電一樣使用I T基礎(chǔ)設(shè)施。近年來(lái)，云計(jì)算的研究和應(yīng)用發(fā)展非?？?，主要原因是云計(jì)算具有如下優(yōu)點(diǎn)：超大規(guī)模、虛擬化、高可靠性、通用性、高可擴(kuò)展性、按需服務(wù)、極其廉價(jià)、安全、方便。

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