Considering the wide range of knowledge involved in various aspects and the varying basic knowledge of each individual, this tutorial adopts a question and answer format to quickly give everyone a comprehensive and rough understanding of IDC What is IDCIDC? In English, it means Internet Data Center, which translates to Internet Data Center.
As an important network service platform for NSP business, it provides large-scale, high-quality, safe and reliable professional server hosting, space rental, and network wholesale to website enterprises and traditional enterprises through high-speed connection with a certain backbone network, leveraging rich network resources to broaden the temperature and humidity of the electronic computer room during startup
夏季：23±2℃冬季：20±21℃全年：18-28℃ 温度变化率 <5℃h 并不得结露 <10℃/h 并不得结露相对湿度 45%-65%（A级）Temperature and humidity inside the electronic computer room during 40% -70% (B-level) shutdown
温 度： 5-35℃温度变化率 <5℃/h并不得结露 <10℃/h并不得结露相对湿度： 40%-70%（A级） 20%-80%（B级）24*7小时稳定、高速的带宽保证7＊24小时电力供应，提供双路市电，UPS等，保证持续供电率达99.9％
Ensure monthly network connectivity of over 99.5%. What is bandwidth? Bandwidth can be easily understood as the maximum data flow that can be accessed per unit of time. If a 100M network switch is used, the LAN bandwidth can reach 100M; If a 10M switch is used, it can only reach 10M.
It is mainly about the speed of accessing the Internet, which can be comprehensively understood together with the “broadband” and “narrowband” users launched by the telecommunications department“Narrowband users generally refer to dial-up internet users. The speed of dial-up internet through MODEM generally does not exceed 64K, and the bandwidth is very narrow; And “broadband” users refer to ADSL or community broadband network users, with internet speeds ranging from 512K-100M (shared by corridors or communities), and a wider bandwidth.
The server hosting quotation refers to this form.
What is server hosting, virtual hosting, and servicesWhat is the difference between server hosting and server hosting? Server hosting refers to customers purchasing host servers themselves and installing corresponding system and application software to achieve exclusive use of high-performance servers for users, realizing all network service functions of WEB+FTP+MAIL+DNS, which can save expensive dedicated line and network equipment costs.
Server hosting business can be divided into server hosting and virtual hosting. “Server hosting” refers to placing a server in a company with a physically connected network environment to the Internet, or renting a server from it. Customers can remotely control the server to configure it as a WWW, email, Ftp server.
A server like this cannot be seen as sharing host system resources with others when viewed by people.
Users who rent space on this machine can have full control over their portion of the space through remote control technologies such as file transfer (FTP), such as information uploading and downloading, application function configuration, etc. It can be said that owning an independent site through “virtual host hosting” is much more cost-effective than building and maintaining a server. Currently, this method of establishing a site is being increasingly adopted by enterprises and institutions.
7. Advantages of server hosting business 1 2. Compared to building a separate computer room and renting dedicated lines for internet access, the overall operating cost is significantly reduced High reliability 4. Telecom grade data centers provide professional operation services 5 Professional technical personnel are responsible for maintaining 6 Network stability 7. Higher security performance.
8. High speed fiber optic direct connection ChinANet backbone node effectively ensures network stability and speed. 9. Users can freely choose 2M-100M (exclusive or shared) access rate (not yet open). 10. Good flexibility. 11. Users can start business quickly. 12. Hosted network equipment. 13. Easy expansion
Generally speaking, the types of servers managed by 8 servers are divided into 4 types: 1U, 2U, 3U, 4U1U=1.75 inches=4.445cm 4.5 * 58 * 62 cm (height * width * depth) 2U is 2 times the height of 1U, and so on. The PC we usually use is 4U.
The application of 1U servers in the field of host hosting is very practical. Compared to hosting other types of servers (such as 2U servers, tower servers, etc.), the hosting fee for 1U servers is definitely the cheapest because the hosting fee for data centers is calculated based on the annual cost of 1U servers. If your server is smallIf it is too high, it will undoubtedly require more custody fees to be paid.
The difference between bandwidth restriction and traffic restriction is often stated in many hosting contracts: not restricting traffic sounds good, but in fact, it should be clarified that traffic does not equal bandwidth. Not restricting traffic does not mean not restricting bandwidth. For example, a tap does not restrict traffic, but limits flow rate. The tap is only slightly turned on, although there is no traffic restriction,.
But it’s not enough to fill a tank of water in an hour. This is also a text game, and there are some hosting companies that explicitly state: not only do we not limit traffic, but we also do not limit bandwidth! It sounds impressive, but in fact, there is one more sentence: I don’t limit you, nor do I limit others! Oh, come on, it’s all nonsense and there are no restrictions. So, several machines in a cabinet are doing downloads, and in the end, everyone’s speed is as slow as an old cow. You go to the hosting company to argue, and they make a convincing argument: there’s no way, I didn’t guarantee your minimum bandwidth, and I don’t limit your trafficBandwidth means we cannot limit the traffic and bandwidth of others. There is only so much bandwidth, and whoever has a good machine and grabs more is their own. I cannot limit it.
In the end, I realized that this kind of unrestricted traffic is the scariest, possibly the slowest. If you still don’t understand, let me give you another example. For example, at an intersection, there are usually traffic lights, and for two roads, there are “restrictions”. However, it is precisely these restrictions that ensure smooth traffic. However, if everyone thinks that traffic lights are a waste of time and the transportation department takes them off, the car will be stuck all over, and at this time, your speed through the intersection may be very slow
“Unlimited” has become “restricted”. What is the two-wire, dual link server two-wire access technology (referred to as “dual line technology” for short) is to access the services of different network access providers (ISPs) to a server or a service through special technical means in an Internet Data Center (IDC)On the server cluster, to enable the network services provided by it to access users as much as possible through the same or faster ISP connection, thereby solving or reducing the slow latency (network bottleneck) problem of cross ISP users accessing websites.
Dual link: Single line and single IP achieve dual lines, which is an emerging routing technology. This IP does not belong to any telecommunications operator. When parsed, it automatically determines which line the visitor is on, allowing the IP to take which line fully meets the needs of each line, ensuring unobstructed network lines, and completely solving the problem of data load balance in the interconnection and intercommunication of north-south telecommunications networks.
Why did dual line technology emerge? As we all know, China Internet service providers are mainly divided into two state-owned enterprises, China Telecom in the south and China Netcom in the north, to share the network services of China Internet. Therefore, the problem of north-south interconnection has become an Internet user in ChinaThe most headache inducing issue for internet content service providers (ICPs).
More and more commercial website services are available, and visitors and customers are becoming more and more picky. The network service providers who have experienced the foam economy in China’s Internet industry have been quite deeply aware that: “Only by truly providing high-quality and appropriate services to Internet users is the only way out for all websites!” Therefore, providing high-speed network information services to Internet users, customers and other visitors at a low cost is what every network information service provider has always dreamed of.
The classification of dual line computer rooms: 1. Single line single IP implements a single line, which is equivalent to a dual line speed. This type of network usually uses non telecom and non network communication lines, such as China Mobile and China Unicom. The speed of connecting these lines to both telecom and China Unicom is very good, but after all, there are bandwidth limitations. Small websites have good speed, but large websites cannot.
2. Dual line and dual IP achieve dual lines, with China Telecom and ChinaThe access to the backbone network of China Netcom is achieved through the servers hosted in the computer room, which enables dual line access between China Telecom and China Netcom. This enables users of China Telecom and China Netcom to connect to the servers at a very fast speed, solving the problem of slow mutual access between China Telecom and China Netcom.
This method uses software to determine the visitor’s route and redirect the website to different URLs, achieving dual line automatic recognition and access technology. By using this technology, customers no longer need to separately resolve domain names to the IP addresses of China Telecom and China Netcom, but only need to add a resolution record in the domain name resolution (such as: Xiamen server rental Xiamen server hosting Foreign server rental Large bandwidth rental Monthly payment server rental Lingzhong Technology)
）Based on the network used by website visitors, the same domain name (such as Xiamen server rental Xiamen server hosting Foreign server rental Large bandwidth rental Monthly payment server rental Lingzhong Technology) can be automatically resolved to the corresponding operator linesThe disadvantage of obtaining fast access speed on IP addresses is wasting bandwidth resources.
3. Single line and single IP realize dual lines, which is an emerging routing technology. This IP does not belong to any telecommunications operator. When parsing, it automatically determines which line the visitor is on, so that the IP takes which line fully meets the needs of each line, ensuring unobstructed network lines, and completely solving the data load balance scheme for interconnection and intercommunication between North and South Telecom networks, making up for single line defects.
4. A fake dual line is actually a line that introduces users to a dual line and deceives customers with low prices. There are many such operators in the market who profit from it. What are the factors that affect server access speed? A Hardware configuration of the server (including server type, CPU, hard disk speed, memory size, network card speed, etc.).
B. The network environment and speed in which the server is located C The network environment where the server is located and the Internet backboneThe rate of dry network connection D ChinaNet’s international export rate E The dedicated line speed between the visitor’s ISP (Internet Access Service Provider) and ChinaNet
So uplink and downlink refer to the direction of data transmission, and the actual transmission speed should also be divided into uplink and downlink. Uplink speed is the speed at which data is sent out, and downlink speed is the speed at which data is received. Simply put, the amount of information transmitted by the client to the server is called the uplink traffic received by the client from the serverThe amount of information received is called the downstream traffic of the client.
Traffic refers to the amount of information received or sent out within a certain period of time, which is not directly related to the impact of the network What is a domain name? An Internet domain name is the name of a server or network system on the Internet network. In the world, there are no duplicate domain names. The form of a domain name is composed of several English letters or numbers, separated by “.” into several parts, such as.
http://SOHU.com It is a domain name. Domain names on the Internet can be described as various. But from the structure of domain names, domain names can be generally divided into two categories, one is called “international top-level domain name” (“international domain name” for short), and the other is called “domestic domain name”. The last suffix of general international domain names is some, such as. com.
The “International Common Domain” of. net,. gov,. edu, these different suffixes represent different institutionsFor example,. com represents commercial institutions,. net represents network service institutions,. gov represents government agencies, and. edu represents educational institutions. The suffix for domestic domain names usually includes two parts: “international common domain” and “national domain”, with “national domain” as the last suffix.
http://www.lingzhong.cn It will automatically convert to 117.25.129.183. People are accustomed to memorizing domain names, but