What does idc mean?What is an idc server room?

The main business provided by IDC includes hosting (space, rack, VIP room rental), resource rental (such as virtual hosting business, data storage services), system maintenance (system configuration, data backup, troubleshooting services), management services (such as bandwidth management, traffic analysis, load balancing, intrusion detection, system vulnerability diagnosis), as well as other support, operation services.

Internet Data Center (Internet Data Center) referred to as IDC, is the use of existing Internet communication lines, bandwidth resources, the establishment of standardized telecom professional-level server room environment, for enterprises, the government to provide server hosting, leasing and related value-added and other aspects of the full range of services. The company that owns the server puts the server into the data center, which is what we usually call server rental and hosting as well as other related businesses.

idc server room is the Internet Data Center (Internet Data Center) referred to as IDC, is the telecommunications sector to use the existing Internet communication lines, bandwidth resources, the establishment of a standardized telecommunications professional-level server room environment for enterprises, the Government to provide server hosting, rental and related value-added services.

Through the use of telecom's IDC server hosting business, enterprises or government units do not need to establish their own specialized server room, laying expensive communication lines, and do not need to hire network engineers at high salaries, to solve many of their own use of the Internet's professional needs.

The main applications of IDC hosting are website publishing, web hosting and e-commerce. For example, the website release, the unit through the hosting host, from the telecommunications department assigned to the Internet static IP address, you can publish their own www site, their products or services through the Internet widely publicized; virtual host is the unit through the hosting host, the host's massive hard disk space to rent, to provide virtual hosting services for other customers, so that he or she becomes an ICP service provider; e-commerce refers to the E-commerce refers to the establishment of one's own e-commerce system through hosting, through which a business platform is used to provide perfect services to suppliers, wholesalers, distributors and end-users.

IDC is Internet Data Center. It has developed rapidly along with the ever-developing needs of the Internet, and has become an indispensable and important part of China's Internet industry in the new century. It provides large-scale, high-quality, safe and reliable specialized server hosting, space rental, network wholesale bandwidth as well as ASP, EC and other businesses for Internet Content Providers (ICP), enterprises, media and various websites.

There is no authoritative definition of IDC (Internet Data Center), but it has a deeper connotation than the traditional data center, which is developed along with the needs of the Internet's continuous development to provide large-scale, high-quality, safe and reliable specialized server hosting, space rental, network wholesale bandwidth, as well as ASP, EC and other services for ICPs, enterprises, media and various types of websites. Data center has been in the mainframe era for a long time. Data centers have appeared in the era of mainframe, which were designed to provide mainframe management and maintenance to enterprises through hosting, outsourcing, or centralized ways to achieve the purpose of professional management and reduce operating costs.

IDC is a place for hosting the servers of enterprises, merchants or websites; it is the infrastructure on which various modes of e-commerce operate safely, and it is also a platform for supporting enterprises and their business alliances to implement value chain management for their distributors, suppliers, customers, and so on.

IDC has two very important distinguishing features: the location in the network and the total network bandwidth capacity, which constitutes part of the network infrastructure resources, like the backbone network, access network, it provides a high-end data transmission (Data Delivery) services, providing high-speed access to services.

The common access methods of IDC

1, dual-IP dual-line realization

The dual-IP dual-line realization refers to the installation of two NICs on a server, respectively, access to the telecom network line and the Netcom network line and set up a Netcom IP and a telecom IP, so that a server has two IP addresses, need to add the Netcom or Telecom routing table to realize the Netcom or Telecom routing table on the server, so that a server has two IP addresses. It is necessary to add a Netcom or Telecom routing table on the server to realize that Netcom users and Telecom users can access from different lines respectively. Dual-IP dual-line has two common ways to use:

1. ICP users set up two different IP addresses in the website link, Netcom users click on the Netcom IP to access the server, telecom users click on the telecom IP access.

2. Use BIND9 (DNS server software) for different IP address requests to return to a different server IP function to realize the Netcom users requesting a domain name to return to Netcom's IP, telecom users requesting a domain name to return to the telecom's IP, this is the way that some of the IDC proposed intelligent DNS program.

Dual-IP dual-line to a certain extent to improve the speed of Netcom and Telecom users to access the site, but the disadvantage is that the server access to the dual-network card must be set up on the server routing table, which increases the difficulty of maintenance for ordinary users, and all the packets need to be routed on the server to determine and then sent to a different network card, when a large number of visits to the server resource utilization When the number of visits is large, the server resources are occupied. This is the simplest dual-line solution and is generally limited to smaller IDC providers.

2, single-IP dual-line

Ordinary single-IP dual-line refers to the server to set up an IP, the IP is a Netcom IP or telecom IP, through the routing equipment to set up the packet is through the telecom network or Netcom network to send out to realize the dual-line technology. This solution can also improve the access speed of Netcom users and telecom users, to solve the problem of dual-IP dual-line needs to be set up on the server routing, but because the IP address is used in the Netcom or Telecom IP, access to the user in the request packet will not be automatically sent to determine the best route. Therefore, this solution can only be described as a half-dual-line technical solutions, is a transitional form of solutions. This program is generally used as a temporary solution for single-line IDC service providers to dual-line IDC service providers in the transition period.

Single-IP Dual-Line with BGP

The BGP (Border Gateway Protocol) protocol is mainly used for interconnection between Internet ASes (Autonomous Systems), and the most important function of BGP is to control the propagation of routes and select the best routes. China Netcom and China Telecom both have AS numbers (autonomous system numbers), and most of the major network operators in the country are interconnected with their own AS numbers through the BGP protocol. To realize dual lines by using this scheme, it is necessary to apply for IDC's own IP address segment and AS number in CNNIC (China Internet Information Center), and then broadcast this segment of IP address to other network operators such as Netcom and Telecom through BGP protocol, and after interconnection by BGP protocol, all the backbone routing equipments of Netcom and Telecom will judge the best route to the IP segment of the IDC room to ensure high-speed access of Netcom and Telecom users.

With BGP protocol interconnection, all backbone routing devices of Netcom and Telecom will determine the best route to the IP segment of the IDC server room to ensure high-speed access for Netcom and Telecom users.

The use of this program has the following advantages:

1. The server only needs to set an IP address, the best access route is determined by the network backbone router based on the number of routing hops and other technical indicators to determine, will not take up any of the server's system resources. The server's upstream routing and downstream routing can choose the optimal path, so it can really realize high-speed single-IP dual-line access.

2. Because the BGP protocol itself has the characteristics of redundant backup and loop elimination, so when the IDC service provider has more than one BGP interconnect line, it can realize the mutual backup of routes, and the routes will be automatically switched to the other lines in case of a line failure.

3. The use of BGP protocol can also make the network has a strong scalability can be the IDC network and other operators to interconnect, easy to realize the single-IP multi-line, to do all the interconnections of the operator's users to access are very fast. This is a dual-IP dual-line can not be compared.

While the BGP program is the best solution, but because this program requires IDC providers to invest in equipment and bandwidth investment in the larger and more technically complex, so the current domestic use of this program is limited to the strength of the professional IDC service providers.

In summary, the above various ways to realize the advantages and disadvantages of dual-line, dual-IP dual-line cost is low, but the network is not stable enough and take up a lot of server resources, ordinary single-IP dual-line just to achieve the effect of part of the dual-line, so the access speed is not good, the CDN method of static web pages is very good, but for the interactive web pages is not very good, BGP single-IP dual-line! To solve all the above problems is the best way to achieve the IDC service provider to use this program is less, if the BGP single IP dual-line with CDN acceleration will be the optimal solution.