董玉 管群

摘要：隨著網(wǎng)絡帶寬的不斷增長，通過網(wǎng)絡訪問非本地的計算服務的條件越來越成熟，于是就有了我們稱作“云計算”的技術(shù)。云計算能夠給用戶提供可靠的、自定義的、最大化資源利用的服務,是一種嶄新的分布式計算模式。隨著對云計算應用的不斷擴大和深入，對云計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云計算的性能。文章闡述了云計算的基本概念，并在此基礎上介紹了云計算領域里的數(shù)據(jù)計算與數(shù)據(jù)存儲的相關技術(shù)，重點介紹了多用戶隔離機制，最后預測了云計算的發(fā)展及其未來。關鍵詞：云計算；數(shù)據(jù)計算；數(shù)據(jù)存儲；隔離機制

中圖分類號：TP393文獻標識碼：A文章編號：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

云計算[1]是I T基礎設施的交付和使用模式，它指的是通過網(wǎng)絡以按需、易擴展的方式獲得所需的資源（硬件、平臺、軟件）。提供資源的網(wǎng)絡被稱為“云”?！霸啤敝械馁Y源在使用者看來是可以無限擴展的，并且可以隨時獲取，按需使用，隨時擴展，按使用付費。這種特性經(jīng)常被稱為像水電一樣使用I T基礎設施。近年來，云計算的研究和應用發(fā)展非?？?，主要原因是云計算具有如下優(yōu)點：超大規(guī)模、虛擬化、高可靠性、通用性、高可擴展性、按需服務、極其廉價、安全、方便。

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