What isVirtual host　　
　　Why create a web host？ 　　
　　How to choose a good web hosting provider？
　　How much does web hosting cost？
　　How do users manage their own web hosting？
　　An introduction to IIS connection limit

　　Location (domestic, foreign, etc.) :　　
　　Network connection speed:　　
　　Disk space size:　
　　Number of Email addresses:　　
　　Support component
　　cpu usage
　　Monthly flow
　　Peak bandwidth
　　Vigilant virtual host "underweight"!!

I. AboutVirtual host
　　1. What is Web hosting
　　What is Web hosting？
　　Special hardware and software technologies are used，Divide the system resources on a server into several parts，Make each part have a separate domain name and IP address (or a shared IP address)，Complete INTERNET server functions，Like a standalone mainframe，Each part of these system resources is called a virtual host。
　　On the same hardware, the same operating system, running different server programs open for multiple users, do not interfere with each other;Each user in turn has its own part of the system resources (IP address, file storage space, memory, CPU time, etc.)。Each virtual host is completely independent, in the outside world, each virtual host and an independent host performance is exactly the same。

　　2. Why create a web host？
　　The Internet has increasingly become an important way of marketing。When the enterprise does not have sufficient conditions, it is very necessary to establish a virtual host on the network for e-commerce。Set up your own web hosting (web server) and you have a long-term online electronic advertising。

　　3, how to choose a good web hosting provider？
　　Choosing a good supplier is very important, she can not only ensure your server security, stability, speed, and excellent technical personnel to provide technical support。Rui network will recommend the best cost-effective web hosting suppliers for you, because we will first consider whether the business should adopt satisfactory hardware and advanced software, and have professional technical personnel。

　　4. What about the cost of web hosting？
　　The emergence of virtual host is a major contribution to Internet technology, and it is the Gospel of Internet users。Because multiple virtual hosts share the resources of a real host, the hardware costs, network maintenance costs, and communication line costs borne by each user are greatly reduced, and the Internet truly becomes an affordable network for everyone!

　　5, How do users manage their ownVirtual host？
　　Users can upload or download files to the virtual host through FTP。As for uploading, users need to have the appropriate permissions to upload to ensure security。Your daily work is mainly HomePage upload and E-mail processing。These operations are very simple。

　　6. Introduction to IIS connection limit
The number of IIS connections can be simply understood as how many browser Windows are allowed to access your site, for example: 100 IIS connections can have 100 browser Windows connected to the server at the same time。Reducing pop-ups is a good way to effectively increase the number of people online。For general websites, basically in the same browser window for link access, rarely use a pop-up window, a visitor accounts for only one IIS connection number, 50 IIS can fully guarantee 25-40 people online at the same time。And some programs like Jianghu community, visitors are usually open 2-3 Windows to access, 150 IIS to ensure 50-75 people online at the same time。
　　Generally, the number of simultaneous connections to WINDOWS class servers based on IIS is limited, and too many connections will directly lead to server instability and disconnection。In serious cases, the IIS process of the server will be interrupted or even the entire operating system will crash。It can be said that the number of IIS connections is the most direct standard of virtual host performance, and the price of all Spaces is set according to the number of IIS, so as to ensure the greatest fairness to customers。 Therefore, it is recommended that users: do not use the frame structure of the web page, do not exchange LOGO links with other websites (because a picture is also an IIS), reduce pop-up Windows。

Second, select the virtual host to pay attention to several problems

　　□ Location (domestic, foreign, etc.) :
　　Generally speaking，The virtual host is placed in the country，Domestic users access faster，But foreign users are slower to access;While the web host is located abroad (generally in the United States)，Access is faster for users around the world，Domestic users access the speed is slightly slower;But this assumes that the network system on which the virtual host resides is connected to the Internet backbone at a high speed，If the connection line is a lower speed line (such as 128K)，256K，Foreign T1, etc.)，Then the speed will be greatly reduced。
　　□ Network connection speed:
　　This is a very important factor affecting speed。Require the web hosting provider's network connection to be as fast as possible。Zibo website promotion

　　□ Disk space:
　　If your web host plans to place a lot of images or features are more complex, or you plan to rent some of the space to others (you are an agent!)You have to consider the larger disk space。A web page takes up about 20-50 kilobytes of disk space，10 megabytes (10MB) can fit approximately 200-500 pages，But sometimes you want to use this space to save a file (for example, use your web host's resumable ability to help you download a file that never comes down).，Or install a program，You need to make some space for yourself。

　　□ Number of Email boxes:
　　It depends on how many people in your business will need a separate Email address。 With or without database development capabilities: If you plan to develop a database on your website, it is very important to choose a suitable database。my/msSQL database is a lightweight SQL database specially developed for Web applications, high efficiency and strong functions, support Chinese search, as long as a little knowledge of Perl language can be developed, there are a lot of applications at home and abroad。

　　Support components (such as commonly used upload components, dynamic image watermarking components, dynamic components, etc.)

　　cpu usage (Virtual hosting, for example, is a girl with multiple boyfriends，You're one of her，The rate of time she spent with you，It's called cpu usage，The sum of all values will exceed 100% because it's only if you ask for it strongly and nobody else asks for it，That's why she gave you so much time，You don't normally need this much)

　　Monthly traffic (Monthly, your web host traffic, now generally there is no limit)

　　Peak bandwidth (the same as cpu usage, the general virtual host is between 128K and 1024K。We can actually calculate it，General space merchants buy 100M ports，Put 10 to 20 servers，On average, each server is allocated 5-10m bandwidth，Each server has an average of 100 virtual hosts，Each virtual host is allocated 50 ~ 100K，But not every web host is at full capacity，So the general virtual host 1 ~ 2M bandwidth or some。However, in order to properly balance the various hosts, he will limit the peak value, which means that it is not allowed to exceed this value.)

　　Vigilant virtual host "underweight"!!
　
　　Now each host business in their own website are "clearly priced" to provide 100M, 200M, 500M and other capacity of space, but we know that for 1M capacity, there are 1000K and 1024K two conversion standards, and all space business but do not talk about it。

　　If you follow these two different conversion standards, there will be a difference of 2400K capacity per 100M space (a little more than 2%, this proportion is not small。This is only based on K, if you continue to convert down, the gap will be larger), the larger the space, the larger the difference in this number naturally。If some space quotient is in accordance with the standard of 1024, and some are in accordance with the standard of 1000, then for those 1000 users, it seems that it should also be a "lack of weight.？Does the state not have any relevant regulations, nor any industry standards？？

　　A little bit of server knowledge and computer knowledge people are not difficult to think that the price of hard disk has plummeted, and now the size of the space business is what？Which space business hard disk is not rich very？So there will be space business gift post office are particularly generous situation, many even buy 100M space can be given 200M post office, understand the space size is not worth the truth？

　　The price of space is completely determined by IIS and CPU resources，It shows that the upside looks like selling by size，What really determines the price is not the size of the space，So arguing about this 1M = how many K is really pointless!Is 1M = 1050K for the host has no loss，But if you want more than one IIS, no host will give it to you for free。

　　So some space prices seem to be very cheap, but the number of IIS supported is less, but deliberately give the space to a large, such as 100M space IIS only 20, the trick is here!