虚拟什么是云计算虚拟化技术

什么是云计算虚拟化技术

What is cloud computing virtualization technology

Cloud Computing is the development of Parallel Computing,Distributed Computing, and Grid Computing. Cloud Computing isVirtualization (Virtualization) , Utility Computing, UtilityComputing) , IaaS (infrastructure as a service) , PaaS (platformas a service) , SaaS (software as a service) concepts such ashybrid evolution and jump in the results.

Virtualization is a broad term that refers to the computingelement on the basis of the virtual rather than real operationon the basis of, is a in order to simplify the management,optimize resources solutions. Like office open, transparent,almost invisible wall for the whole floor, the user canuse thesame cost to build a more independent for office space, to savecosts, maximize space utilization. The idea of reprogramminga finite set of resources for maximum utilization based ondifferent requirements is called virtualization technology inthe IT area.

Virtualization technologies can increase the capacity ofhardware and simplify the reconf iguration of software. The CPUvirtualization technology can be single CPU simulation ofmulti-cpu parallel, allow a platform to run multiple operatingsystems at the same time, and the application can be run inseparate space and mutual influence, so as to improve theworking efficiency of the computer. Currently, virtualizationhas evolved froma virtual server to a virtual desktop, network,storage, and other virtual technologies.

As can be seen from the definition, virtualization is atechnology foundation of cloud computing cloud computingbesides has the virtualization technology base, and othertechnical support, the support includes from the foundationplatform of software facilities to the application. Let' s takea look at some of the key concepts of cloud computing withTanjurd.

(1) local without calculation, calculation are all made of realtime remote network computing resources, we usually contactwith cloud computing resources and resource on the sameplatform, rather than simple data acquisition.

Now we are usually accessed through a network of resources, aregenerally files, streaming video and audio streams, cloudcomputing is a computing resources as a remote resource intransmission through the network, this is the cloud computingis different from any other computing a peculiarcharacteristics.

Will be allocated on computing resources in the network,high-speed network support is a must, then, must have a verylow latency, and interaction in the process of calculation canbe loss to a minimum. Cloud computing is also different fromthe way we used to submit jobs remotely, waiting for results,and the process of cloud computing is real-time.

(2) to support a variety of hardware platform and a variety ofsoftware platform, and communication protocols, distributioncharacteristics, not only requires hardware software

(including software applications) will have distribution

features, users in the use of software resources before, don'thave to consider the characteristics of local hardware, thecharacteristics of the local hardware will not to choose thebehavior of cloud computing as a computing platform.

Now very cloudy computing solutions provider in providingsolutions at the same time always ignore the cloud computingis an important characteristics of cloud computing is anintegral part of the solution, not just the hardware withmultitasking, session more processing power, but that requiresto run on a hardware platform software must also be allocatedto different hardware platforms. Here it is necessary todescribe the difference between the operations and privatecloud, some relatively large companies or operators, simply byway of lease hardware computing resources, provide service forits users, namely the provider to build a huge group serversand storage, the user can pay rent at these server computingresources and storage space. From the principle of analysis,the provision of this computing resource is also a way ofimplementing cloud computing, without the need to consider thefeatures of software.

But in a lot of units building private clouds, there' s a problemwith the same strategy,

What is the difference between the ability to deploy to amultipoint hardware unit and the ability to install on a singleserver without the ability to deploy to a multi-point hardwareunit?

Users in using cloud computing as a computing platform, should

not be to consider local computing resources ability, theproblem such as compatibility, because cloud computing is astandard computing platform. As a result, the adoption ofvirtualization technologies as the basic technology platformfor cloud computing is the right way to synthesize the complexhardware environment. When virtualization technologies areadopted, the various hardware characteristics that areinvolved in computation can be blocked and the computingresources are integrated.

Now let' s take a look at some of the key concepts presented byTanjurd:

(1) according to different virtualization products fordifferent virtualization technologies, such as server, desktop,network, different level, IT reflects different virtualizationdirection, and form can connect different platform of theoverall solution.

Virtualization is an interface encapsulation and standardizedprocess, encapsulation process there will be differentaccording to different hardware, by encapsulating andstandardization, to run the application in virtual containersprovide a suitable environment. In this way, throughvirtualization technology, can shield the differences ofdifferent hardware platform time, shielding the differencesbetween the hardware software compatibility problem, throughvirtualization technology, can the hardware resources throughvirtualization software integration again after usingallocated to software.

Hardware virtualization technology to realize theindiscriminate encapsulation is very suitable for as atechnology platform in the large-scale application of cloudcomputing, however, virtualization technology is not onlytechnical basic conditions of cloud computing. It is onlypossible to saythat virtualization is arealistic solution tothe cloud.

(2) the core solution of virtualization is to get away fromhardware dependencies, and you can deploy virtualized productson various hardware to form a unified computing interface.From the JVM to VSX etc products, hardware virtualization corepriority is out of dependence, so that both softwaredevelopment and network applications, can simplify thesoftware development model method. So virtualization isstandardized on the user interface, consistent, not cloudcomputing, which provides a wide variety of platform adaptationinterfaces.

This feature of virtualization technology makes virtualizationavailable in many applications. Virtualization technology isthe technology platform adopted in many cloud computingsolutions, and the feature of virtualization is inseparable.But not all cloud computing has tobe virtualized as atechnicalbasis, such as smart appliances, which are not possible todeploy virtual machines in appliances.

(3) there is a requirement for local computing, andvirtualization does not solve the calculation of localt erminals.

Virtualization can't solve the problem of the calculation oflocal terminal, virtual server or virtual desktopvirtualization technology can't achieve all the operations aretransferred to the remote execution. Virtualization enablesdynamic resource allocation, but is not remote.

At the same time, virtualization technology involves network,such as the local use of remote virtual machine, need a largenumber of network communication, the communication flow and onthe virtual machine to run the program complexity without anycorrelation, is simply the virtualization technology itselfneeds to network communication requirements. There is no suchthing as cloud computing.