1. According to the research of IDC before 2005 is the first stage in the development of virtualization technology, called virtualization 1.0, virtualized development from 2005 to 2010 in the second stage, called virtualization 2.0, at present already entered the stage of virtualization 2.5, virtualization 3.0 stage also will come in soon, according to Gartner predicts that by 2016 70% of China's enterprise X86 server will implement virtualization,
ArsTechnica website published an article reviews that the virtualization of the current market, VMware is the boss, the Hyper - V # 2, Microsoft citrix Xen third, red hat and oracle in fourth place, such as the server hardware technology and software technology, software application environment gradually developed mature application requirements, and constantly improve, virtualization because of it has to improve the utilization rate of resources, energy conservation, environmental protection, the characteristics of large-scale data integration can be become a strategic new technology,
First of all, with the major manufacturers have enter the field of virtualization, open source virtualization will continue to mature,
Second, with the development of virtualization technology, virtualization will speed up development of soft hard together, in this regard, memory virtualization has been showing,
Third, the rapid development of the network virtualization, network virtualization can efficiently use of network resources, energy saving cost, simplifying the network operations and management, enhance the advantages of network reliability,
Second, data center to develop in the direction of integration and green energy-saving
At present the traditional data center construction is facing a heterogeneous network, the static resources, manage complex, higher energy consumption problems, cloud computing data center is different with traditional data center, how to solve it quickly in a short time, efficient and complete enterprise data center capacity deployment problem, at the same time to take into account the green energy conservation and high reliability requirements, high efficiency, integration, low power consumption, automation management become the focus of the construction of cloud computing data center, integration, green energy saving become the development of cloud computing data center building technical characteristics,
Data center of the integration of the first is the integration of the physical environment, including the power supply and precision refrigeration, etc., mainly to solve the reliability of the data center infrastructure and usability problems, further consolidation is to build a management system for infrastructure, the introduction of automation and intelligent management software, enhance the operation efficiency of management, there is a kind of integration is a storage device, the optimization of the upgrade, such as server and introduce more advanced servers and storage devices, Emerson is put forward, a integrated innovation runoff cloud computing data center,
2. P2p concept: implications for point to point or end to end, and academic circles often hold it for peer-to-peer computing,
3. The characteristics of p2p technology: decentralization, scalability, robustness, high cost performance, privacy protection, load balancing,
4. Classification of p2p networks: centralized topology, fully distributed unstructured topology, all distributed structured topology structure, a distributed topology,