Expert interpretation: The misreading of cloud computing at the present stage

"There are a lot of cloud computing, such as the cloud is a business philosophy, another cloud is a service form, and said that the cloud is a technology, then what is the cloud, I hope you can judge after listening to http://www.aliyun.com/zixun/aggregation/ 14032.html "> What is Cloud computing, what is not cloud computing, what is the current phase of cloud computing, what should we do?" "Lin Tao, chief engineer of the Ministry of Communications, the fourth session of CCS Cloud Computing Summit Forum.

As we all know, cloud computing is really hot in society, but it is also very vague. Lin Tao As an example, some people buy a cloud TV, bought back will not be used, the cloud can be seen everywhere. So, what is the concept of cloud, what is the stage of cloud computing, how to look at the current stage of cloud computing. The following content, Lin Tao will be revealed to us.

What is the cloud, what is not the cloud

First of all, Lin Tao that cloud computing is really important, cloud computing is really a very important technology now, and will have a very deep influence on the future. However, the current business philosophy of cloud computing, such as the Cloud TV, cloud mobile phones, the cloud is fired completely is a business philosophy. If this continues, it is difficult for users to distinguish between cloud and cloud, a business idea.

The second is service form, we all know three service forms, Iaas,paas,saas. At present, these three kinds of services are in fact the full reflection of it resource services.

In addition, cloud computing is a real implementation technology, we know that there are many IT resources, such as we currently have storage resources, computing resources, computers, software, platforms, then it resources have three forms of existence, a centralized way of existence, one form of existence is decentralized, one form of existence is distributed. Now it data centers, our IT resources are a decentralized way to exist, that is, there is no connection between the device and the device. So cloud computing is actually connecting the devices that are now dispersed into a distributed system.

So there's some basic definition of cloud computing, and we're turning the American definition into Chinese, the first cloud is something, just like the clouds in the sky, he is composed of many many small sources, the equivalent of the cloud is composed of objects, then the cloud is also a unit composition, then we call it cloud, foreign also have this word, Cloud unit. As we have here, the basic concept of cloud formation is called the Cloud unit. Second, these units require high-speed network connectivity. Third, he uses the algorithm to organize and manage these cloud units into a sharable, configurable pool of resources. The next part is to use virtualization technology, which is provided to users according to their needs. This thing is the cloud.

Five characteristics of cloud computing. The cloud is defined as such that the cloud has such a basic five characteristics, the first cloud is composed of Yun Yuan, everyone from various industries, all aspects, and some may be made, you can know in the cloud unit now can do is a lot of things. Second, the cloud units need to be connected by a broadband network, so broadband networks are the basis of the cloud. The third feature cloud is the distribution system, the fourth cloud uses virtualization technology, and the fifth cloud is guaranteed to be secure. This is the five major features of cloud computing.

The three-tier service structure of cloud computing. What kinds of services does the cloud provide? The first is to provide IaaS, which is a service approach. such as virtual machines, memory, computing power This is IT resources, this is IaaS. But Lin Tao that he is not very much in favor of infrastructure services.

The second way PAAs, operating software platform, it is platform, but now note that this platform is not directly to the user, it is only for developers. We all know that we use a lot of Google Maps, when you use Google Maps, this time you are not PAAs, you use IaaS, when is the PAAs, when I am the developer, I go to use it, the user is my content, this time Google Maps is the platform. So this time the concept of platform is very practical, and especially now after the development of the Internet, a large number of APR open.

SaaS is not a separate software is operating software, the first cloud computing is to achieve the business, the second cloud computing physical entity is the data center, the third cloud computing can achieve a full range of services.

For cloud computing, Lin Tao his three conclusions.

The first basic conclusion, what is cloud? First, the cloud is not a commercial hype, cloud is not a service form, cloud is a technology to achieve the means, the cloud is unified through the network to organize the resources, these resources are IT resources, it resources, including computing resources, storage resources, software, platform, so he is a distributed implementation technology, virtualization distribution technology to users.

The second basic conclusion, Cloud's physical entity is the data center, now everywhere says the cloud, then we can see the entity where, is the data center, we know the original data center, actually is the decentralized type, I have many rooms, the room has many equipments, the equipment has the network connection, But there is no connection between the devices. But Cloud computing associates all the devices, the data center is the physical entity of the cloud, then of course the data center is not necessarily a cloud, so there is a cloud of data center, there is not a cloud of data center, not cloud data center device is not associated, the cloud of data center equipment is associated. Cloud Data Center has a cloud of technology units, there is a data center network, the real thing you can see the cloud is in the data center.

The third basic conclusion is that the cloud can provide a full range of it resource services, so I am very important here to mention IT resources, I did not mention the communication resources. What is IT resources, computing resources, storage resources, virtual machines, and usually real physical IT resources. In addition to it, we know that the current concept of the platform is more ambiguous, I will explain later.

These three add up after all IT resources are included. In that case, the cloud does provide a full range of IT resources for the future, and he can turn all IT resources into a resource pool for users.

(Responsible editor: The good of the Legacy)