The detailed explanation of data center definition tells you the world's four largest data center groups

Definition of technical terms-Chinese name: data center (English name: datacenter), definition: outsourcing method allows many online companies to store their equipment (mainly websites) or data, which is an extension of the concept of site rental in the Internet field. Affiliation: communication technology (first-level discipline); service and application (second-level discipline).

1. Data Center

The data center is a globally coordinated network of specific devices used to accelerate the transmission of information on the Internet network infrastructure.

Second, the composition of the data center

When using internet access, all you need is a PC with Internet access plus data center software. The router in the article refers to that the general company accesses the Internet through the router when going online, and at this time, some settings must be made on the router. It can also be achieved by directly connecting the broadband access line to the PC. No ISP is required to activate the service. However, according to the obtained external network IP address and method, choose the appropriate dynamic domain name software.

The addresses on both ends of gre, the radiusserver address, and the port address of the enterprise router are automatically obtained when the wireless device dials. The wireless device and the operator's communication device are automatically negotiated, and no setting is required.

If the data center needs to use wireless mode, it can also be realized by H7920 mobile router. But pay attention to bandwidth.

When using the dedicated line access provided by the operator, it is generally an RJ25 interface to the user end, and the data center does not require any hardware. A PC is sufficient. No service is required. However, when private line access is generally used, APN or VPDN will be used to form an internal private network, so that a fixed IP address can be assigned for easy management.

The specific networking structure is as follows:

The wireless DDN system is divided into a monitoring point and a data center. The monitoring point uses GPRSDTU, which can provide RS-232, RS485, and Ethernet interfaces. The data is connected to the Internet by broadband ADSL or dedicated line. The specific access methods are as follows:

a) Monitoring point access method: the monitoring point is connected to the GPRSDTU transmission module through RS-232, RS485 or Ethernet interface, and then set the DTU related parameters, each GPRSDTU transmission module can be loaded with a China Mobile data SIM card.

b) Data center access methods: Data center access is mainly divided into two categories:

1) Adopting Internet access to the data center, adopting broadband ADSL access method, this method has the advantages of large bandwidth and economic cost. The disadvantage is that the security is poor, and the delay is slightly larger than that of dedicated line access. Adopt LAN shared Internet access, which is basically similar to ADSL access, but pay attention to port mapping when accessing. Use telephone line dial-up Internet access. In this way, the access bandwidth is narrow. Therefore, it is only suitable for networking mode with few points and small data volume. The network topology diagram is as follows:

2) The mobile company's access to the data center uses a wireless network operator (referred to as China Mobile) to provide channel access. In this method, there are several connection methods: the mobile company's computer room dedicated line access method is used, and this method has a large bandwidth Generally 2M), it is very good for delay and security, but the leased line is more expensive. It is especially suitable for users with high safety factors such as banks and POS unit networks. It is also recommended to use this method when there are many substations. Adopt GPRS wireless access mode, this mode connects a GPRSMODEM in the data center, dial-up Internet through the data center PC. The advantage is the speed of networking and economical cost. The disadvantage is that the bandwidth is narrow (GPRS up 10Kbps, down 40Kbps), the delay is large. This method is often used in testing. If you plan to use it in the actual project, please note that the SIM card needs to apply for APN.

3. DCCI Internet Data Center

DCCI Internet Data Center (DATACENTEROFTHECHINAINTERNET, referred to as DCCI) is an independent third-party market monitoring and audience measurement platform for the Internet in China, and a professional data collection and research platform. Through different channels, such as offline and online, using a combination of professional researchers and technology, facing the industrial market and user audience, dynamic, accurate monitoring, measurement, statistics, analysis, research, and prediction.

Using a unified method, unified sample, unified definition, large sample size, accurate and effective sample structure, and dynamic and continuous in-depth monitoring, DCCI has achieved the first Market segments, various enterprise services, and unified measurement of Internet users / audiences, thereby achieving unified research on different market segments, different enterprise services, and different user audiences, and achieving horizontal, vertical, point-to-point statistics, analysis, and different Comparability in the true sense between network media. For various research institutions with small sample sizes, scattered items, completely different time and space intervals, and large differences in research frameworks and definitions, it is impossible to conduct data correspondence and continuous research, and it is impossible to achieve the same dimension and system for the Internet. In terms of correlation, comparison, and cross-analysis of the main elements at all levels, it can be described as the most significant breakthrough in the field of Internet research and monitoring. Relevant achievements have made breakthroughs in Internet system research, website practitioners' research on their business structure, grasping the market conditions of competitors, and on the basis of in-depth comparison of the value of different media audiences, to achieve the precise placement of online advertising and the precise interaction of online marketing. The practical significance and value of sex.

Relying on the patented technology and research strength of the Internet Space (Beijing) Data Technology Research Center, the DCCI Internet Data Center, in conjunction with China ’s Internet authority industry organizations, excellent research institutions, and well-known analysts, is engaged in Internet-related business operations and investment decisions for domestic and foreign , Technology development and related research companies, institutions, etc., provide independent third-party, reliable market monitoring and audience measurement services. The data service product line mainly includes:

Netmeasure audience measurement: DCCI regularly publishes Netmeasure China Internet audience measurement data and reports. For the first time, Netmeasure puts forward China's Internet as a media evaluation index system to help advertisers evaluate online media objectively; provide relevant parties with timely and effective Internet access The survey data of the evaluation indicators of various media. Focusing on the 40 most representative Internet subdivision media fields, according to the DCCI system's Internet media evaluation index system, it conducts objective and in-depth professional research, which is unique in China's Internet audience measurement field. Netmeasure China Internet Audience Measurement Report is the "2007 Internet Media Delivery Decision Guide" for advertisers, advertising companies, and Internet entrepreneurs at home and abroad.

Netmonitor market monitoring: DCCI's Netmonitor regularly publishes quarterly and annual market data in 50 areas including the Chinese online advertising market. China's Internet development field has long lacked relatively accurate, comprehensive, and systematic market data. Especially in various subdivisions, there is always a lack of data about scale, growth rate, user behavior, etc. Even if the data is available, the quality is often uneven, and statistical methods and research frameworks vary widely. Commercial market research and research institutions form research reports from the perspective of a single client. Due to the lack of in-depth and breadth support of the entire industry, the validity of the data is difficult to guarantee. Practitioners, researchers, investors, and other aspects often have no reference when their work requires relevant data and research information, and some contradictory data often make practitioners feel at a loss. As the Internet continues to flourish, the demand for effective data from third parties in the real industry, especially industry public data, is increasing in all fields. DCCI unites experts from various parties and organizations to provide accurate and effective industrial market data, analysis and forecast, and analysis and forecast to relevant parties in a timely manner.

Netguide Annual Survey Report / Data: As the initiator and undertaking agency of China Internet Survey, DCCI publishes annual market overall data such as the size, growth rate, user Internet consumption, market concentration and other market segments of China ’s Internet market segments, and issues annual reports for domestic and foreign industries China Internet Survey Report. Taking the third survey and report as an example, the "2006-2007 China Internet Survey" began in June 2006 and ended at the end of December. It lasted for half a year and was the largest annual market survey in the field of Internet development in China. For three sessions, the DCCI Internet Data Center is responsible for implementation. The survey was presided over by senior market research experts and adopted a variety of professional market survey methods such as online surveys, one-on-one face-to-face enterprise interviews, one-on-one enterprise telephone interviews, entrepreneur seminars, and expert seminars. For the investigation of the industrial market, the report team held 36 special seminars before and after, and the one-to-one business visits reached 900 people, involving more than 900 companies. After more than 300 well-known experts and entrepreneurs became expert consultants for the survey and report, they systematically participated in all areas of the report. More than 80,684 real-name and valid questionnaires have been recovered from user-oriented surveys. More than 900 valid questionnaires were interviewed by enterprises. The final report is aimed at 50 subdivided fields, with nearly 4,000 pages of content.

4. World Data Center

World Data Center (WorldDataCenter) is a scientific data organization established by the International Federation of Sciences. It has more than 40 subject data centers and belongs to four data center groups: WDC-A US, WDC-B former Soviet Union, WDC-C Europe and Japan, WDC-D China.

In 1988, China joined the WDC and established the World Data Center D. WDC-D organizations include: China National Coordination Committee, Science Committee, China Center Coordination Office, Science Committee Secretariat, and nine discipline data centers.

There are nine branch centers in China

Center name unit

National Oceanographic Information Center

Earthquake Discipline Data Center Analysis and Forecast Center, China Earthquake Administration

Geology Data Center Information Center, Chinese Academy of Geological Sciences

Space Discipline Data Center Chinese Academy of Sciences Space Center

National Astronomical Observatory of Chinese Academy of Sciences

National Meteorological Center

Cold and Drought Institute of Chinese Academy of Sciences

Department of Geography, Chinese Academy of Sciences

Geophysical Data Center, Institute of Geology and Earth Sciences, Chinese Academy of Sciences

Original Magic Sponge

Puyang Optimus Household Products Co., Ltd , https://www.magicspongecn.com

Posted on