Analysis of "cloud computing" and its typical application technology

1. "Cloud computing" related concepts

1.1 "Cloud" and "cloud computing"

The cloud is a resource pool composed of computing servers, storage servers, broadband resources, software and applications, which can be used for self maintenance and management. and "cloud computing" is the pooling of all computing resources, dynamic creation and highly virtualized resource pool, while the implementation of automated management through specific software, ultimately for users to efficiently use resources.

"Cloud computing" can be said to be a data center, the center can dynamically allocate, configure, deploy and recycle computer resources, but also automatically manage resources, dynamic installation software and applications. Some experts also say that "cloud computing" is only a computing model, in this mode, whether it is computing resources, software resources, data resources, or all kinds of applications, through the local or wide-area network, to serve the user's way. For users, only access to these networks, and then with the help of laptops, tablets, mobile phones and other light clients, can complete all kinds of complex scientific computing, software development and use, or for various types of application of the trusteeship. The computing power of cloud computing is transparent to the user, users will only feel the "cloud" in the resources are infinitely expandable, anytime, anywhere available, you only pay on demand can be used, but do not see how resources are stored or where. Experts liken the "cloud" image to "power plants" that provide storage and computing services, as well as data, software, applications and broadband resources.

1.2 "Cloud computing" service

"Cloud computing" usually provides three ways of service, namely "public cloud" service, "private cloud" service mode and "mixed cloud" service.

The "Public cloud" service does not have "cloud" resources, but accesses "cloud" resources over a wide area network to get "cloud" services. At present, there are well-known companies with stable "public clouds", such as Google, IBM and Amazon, which provide storage, computing services and data, software, applications and broadband resources directly to users through their own "public cloud". The "Private Cloud" service provides "cloud computing" services for both internal and external customers, which require companies to build their own data center infrastructure based on "cloud". The "Mixed cloud" service has the features and functions of both "public cloud" and "private cloud", and it is necessary to build up the basic hardware architecture of "cloud computing", and colleagues will take advantage of the services provided by various external "public clouds".

1.3 "Cloud computing" service category

At present, "cloud computing" mainly provides services to users from three aspects. One is to provide users with virtualized servers, storage servers, and network resources through infrastructure services. The "cloud" resource type also breaks down infrastructure services into computing "clouds" and Storage "clouds". Computing the "cloud" of resources is a high-performance server, through the super server for all types of operating system applications to provide supercomputing and services; storage of "cloud" resources is a huge storage device, Block storage and file storage services are available to users. Second, through application server, database server, Portal Server platform, to provide users with middleware. Third, through the special software system to provide users with applications, processes and information services.

2. "Cloud Computing" value

Through the "cloud" can be centralized and standardized IT resources, so that the Government, enterprises and institutions of the IT operating environment has brought immeasurable value, specific performance in:

1 through the integration of servers, dynamic adjustment of resources and virtualization storage technology, can enable the Government, enterprises and institutions of the IT department with small-scale hardware deployment to complete the same level or higher levels of service, thus greatly enhance the productivity of enterprises and government and institutions business value, while enhancing server effectiveness.

2) with "cloud computing" to build it operating environment, the Government, enterprises and institutions of it operating environment will be more concise, coupled with storage, network and server automation operations, will significantly reduce the IT operation of human error.

3 by purchasing less hardware equipment and software licenses, greatly reducing the procurement costs, through automated management to quickly reduce the workload of the system administrator, which means that the Government, enterprises and institutions in the IT environment when the construction of investment and operational costs.

In short, "cloud computing" provides high value-added services by means of technology to provide computing and storage as a service; Cloud computing "to break the existing room space limitations, in a smaller space to provide more service capacity;" Cloud computing "reduces the cost of investment and maintenance of unit resources through scale effect, meanwhile," cloud computing "brings users a better interactive experience, reduces user cost, improves customer satisfaction and loyalty.