如下是一篇对Cloud Computing的综述，着重点在硬件的方面。 Cloud Computing， the long-held dream of computing as a utility， has the potential to transform a large part of the IT industry， making software even more attractive as a service and shaping the way IT hardware is designed and Developers with innovative ideas for new Internet services no longer require the large capital outlays in hardware to deploy their service or the human expense to operate They need not be concerned about overprovisioning for a service whose popularity does not meet their predictions， thus wasting costly resources， or underprovisioning for one that becomes wildly popular， thus missing potential customers and Moreover， companies with large batch-oriented tasks can get results as quickly as their programs can scale， since using 1000 servers for one hour costs no more than using one server for 1000 This elasticity of resources， without paying a premium for large scale， is unprecedented in the history of IT Cloud Computing refers to both the applications delivered as services over the Internet and the hardware and systems software in the datacenters that provide those The services themselves have long been referred to as Software as a Service (SaaS) The datacenter hardware and software is what we will call a C When a Cloud is made available in a pay-as-you-go manner to the general public， we call it a Public Cloud; the service being sold is Utility C We use the term Private Cloud to refer to internal datacenters of a business or other organization， not made available to the general Thus， Cloud Computing is the sum of SaaS and Utility Computing， but does not include Private C People can be users or providers of SaaS， or users or providers of Utility C Wefocus on SaaS Providers (Cloud Users) and Cloud Providers， which have received less attention than SaaS U From a hardware point of view， three aspects are new in Cloud C The illusion of infinite computing resources available on demand， thereby eliminating the need for Cloud Computing users to plan far ahead for The elimination of an up-front commitment by Cloud users， thereby allowing companies to start small and increase hardware resources only when there is an increase in their The ability to pay for use of computing resources on a short-term basis as needed (， processors by the hour and storage by the day) and release them as needed， thereby rewarding conservation by letting machines and storage go when they are no longer We argue that the construction and operation of extremely large-scale， commodity-computer datacenters at lowcost locations was the key necessary enabler of Cloud Computing， for they uncovered the factors of 5 to 7 decrease in cost of electricity， network bandwidth， operations， software， and hardware available at these very large economies of These factors， combined with statistical multiplexing to increase utilization compared a private cloud， meantthat cloud computing could offer services below the costs of a medium-sized datacenter and yet still make a good profi
但接近时又很难掌握。 But approached and difficult to 近几年来，云计算在国内外可谓风生水起，热闹非凡。 In recent years， cloud computing is wind at home and abroad， 然而，云计算从概念到落地实际上只能从2010年算起。 However， cloud computing from concept to landing in fact only from starting in 在此之前只能看成是云计算的市场引入阶段。 Before this can only as cloud computing market introducing 目前，最简单的云计算技术在网络服务中已经随处可见，例如搜索引擎、网络信箱等，使用者只要输入简单指令即能得到大量信息。 At present， the most simple cloud computing technology in network services have everywhere， such as a search engine， network mailbox， users just enter the simple instructions that can get enormous amounts of 但是，从一种新的业务模式的发展周期来看，尤其是从国内的情况来看，目前的云计算还只能算是初级发展，或者说，还处于教育阶段。 But， from a new business model development cycle， especially from domestic see the situation， the current cloud computing is only as primary development， or education， is still at the 本文主要对微软云计算技术在微软云计算平台基础设施方面的应用开展研究，阐述了云计算的研究背景、发展现状、体系结构、各种云、服务层次、优点等； This paper mainly for Microsoft's cloud computing technology in Microsoft's cloud computing platforms infrastructure application research， this paper expounds the cloud computing research background， development present situation， the system structure， various cloud， service level， advantages; 概括分析了云计算中 基础设施即服务模式的概念、技术层次、储存服务、安全性。 Summary analysis of the cloud computing infrastructure namely service mode of the concepts， technical level， storage service， 最后运行云平台的小程序。 Finally the cloud platform small programs 得出总结，跟期望。 With expectations that concluded，
