First, the server rental hosting can bring those benefits
  Now, many units still use the virtual host, not only expensive but also due to other sites sharing a server, so the speed, bandwidth is a lot of influence, managed server can bring many benefits, first of all, free from other people affected, the site is more stable high speed;
  Second, to obtain complete control of the server, you can run many of the original can not run the programs and services;
  Again, also greatly enhanced the security of data, think about it, your data is always on the other computer, do not always feel at ease, which do not have to worry about the next. For those who intend to rely on the server business Nuggets friend, the server’s use value is even greater, can begin to provide services such as, movie downloads, online games, online communities, business offices, virtual hosting and other services, the most common is the virtual host. Although everywhere now are all virtual hosts, but a large space to run a number of high-grade type of database virtual host cheap price or not, such as a database of 500M to support the virtual hosting space, fees and more than 1,000 yuan, a server with 120G hard drive Theoretically, this can open more than 200 spaces, of course, is actually impossible, even if the opening is only open one-tenth of 20 such open space, then the fees are 2 million, also can open a variety of low-end space, and now many non-IT class corporate website are products of a static site, and traffic is very low, taking up very little system resources and bandwidth, while opening several hundred is not a problem, if each of 100M, charges 100 yuan, So they can charge 1 million, so doing, it has been charging 30,000 yuan, 5,000 yuan less server hardware investment, minus the server hosting costs 5,000 yuan / year, there are 2 million a year down the gross profit! If both the 10 servers hosting it? The second year of it, there is no hardware costs, and by up to a 120G hard drive, only a few hundred dollars, calculate profit. Oh, in fact, many friends while also offering many other services such as business offices, movie download membership fees, etc., a server is really a pot of gold somehow ah.
Second, the “empty talk” – how to choose a good hosting provider
The classic question: Is it necessary you like?
  Many friends have asked me choose which custodian good? If you are a law student, then I ask you, I want to make a case, the election which lawyers merciful? If you are the automotive industry, I want the car, then I ask you what to buy a good car? Is not that hard to describe, you may say: “This is what you look at the situation, what specific requirements.” Such a lot of sense. Our old Chinese saying goes “you pay for”, that this principle is not to cover him all things are correct? According to some people saying, “Bite your tongue to pick, choose expensive it must be true,” but this is the point of view is wrong! I do not say that the server hosting the example, saying that the car now, we are more familiar, if someone asks you what to buy a good car, you say your a pretty good pick, and that China is not all Big Ben ran a BMW Ferrari? Good definition is not unilateral, consumers to buy products or purchasing services, is both things, the different needs of customers naturally have different options, open the taxi drivers all know that Ferrari start and speed are fast enough , but in fact run the streets are Jiedaxiali what is the truth. So you do not blindly managed to choose the host you on the line, just as with the Ferrari soliciting, do not pull back the still earn a lifetime.
Classical Myth: the blind the blind pursuit of cheap
  I believe you guess, did not necessarily good goods cheaper. But even so, it is recommended not to use the kind of super-cheap hosting provider, cheap goods are good in there, but the probability is too low, or give up. This is a last word, to not lose to regret when the.
  We are 59 Internet, will be a good configuration, excellent service and provide you with cheap products, the company mainly engaged in dedicated hosting and hosting, domain name registration, web hosting and other services.
Variable low-cost service providers is amazing
  Now on the market, the price of hosting uneven, also managed 1U host, your asking price 8,000 yuan / year, cheap as long as 2,000 yuan / year, the reason so many factors, although we can not say for certain expensive good, but And do not think the cheaper the better. Then the low-cost service providers where the difference?
  In fact, there is a very important factor is the size of service providers, is not able to consistently manage because they have been doing managed services lower the threshold, management is not very strict, two college students to rent a machine cabinet can engage in, But small companies, personal services, too many factors of instability, in my experience about 80% of the base in the first half would have changed in the event of fluctuations in the economy, or too little room to rent increases in profits, have abdicated, or chaos for local, chaos for IP, miserable, do not think this is rare, in fact, this situation is the majority.
III. Insight – easy to overlook the few big selection of learning
1 managed to sign a strict contract
  Custodian must sign strict contracts, specifying the responsibilities, rights, for example, service providers or mobile machines to change machine debug IP three days in advance to notify the user in a timely manner, or we need to compensate for the losses;
  Service providers have no right to transfer care to others, and so the server. If possible, take a look at managed service provider business license, ICP license, if the opening is too short, the best arm’s length.
2, exclusive and sharing, do not give business to fool the
  The bandwidth provided by the custodian, and now there are two forms, one is exclusive, such as exclusive 1 trillion, 10 trillion exclusive, exclusive Fast, which means your server can be exclusive in this bandwidth, not shared with other servers, the server will not be interference from other more expensive; the other is the most common form of Fast shared, by definition, is a cabinet with 100M bandwidth, for all the servers in the cabinet share (General release more than a dozen units, but also put dozens of hard-hearted), this form is most common, the lowest price, performance is good, generally we look at each site server hosting prices are referring to this form. It should be stressed that the exclusive and shared the two concepts are completely different, both the price is quite different, even if the price is exclusive 1M Fast expensive than shared.
  First start was not good friends on hand, or first choose to share as well, as long as the selection of service providers, and the speed is good.
  I often receive telephone contact some of my friends asked me: If you managed to share the cabinet in the Fast Lane, I can guarantee the bandwidth of 30M it?
  Think about it, if the exclusive 30M cost? Obvious this is not possible, the reality is, in general, the rooms, if your server bandwidth for several days in the 5M or more, you have to be careful, the fix will be driven out of the room. You will the cabinets in the server’s speed drag slowly, you will quit the. You may not understand, since it is 100M shared, if there are ten servers, then 100M ÷ 10 units = 10M / Taiwan Unfortunately, reality is not such a division.
  Because, Fast shared does not mean that the speed of the cabinet connected to the Internet there is 100M.
  Then a cabinet connected to the Internet how much bandwidth is really in the end? In fact, the industry recognized to have 10M-20M on the good, why? As everyone different, in short, do not worry about Fast Ethernet is not enough, continue to provide ten days to give you do not yell in the room 2M pretty good, Fast shared commitment to those in the mouth to the person you are stocked with the absolute exclusive 30M is a liar! Without much thought.
  Perhaps some friends will ask, my hosting provider I stated in the contract was “to ensure each server 100Mbps connection speed, to ensure that the available bandwidth of 10Mbps per server,” this statement is very vague, everyone knows that as long as the server Fast access to the switches inside the cabinet, in the lower right corner of the computer screen flashes a small computer logo will appear 100Mbps connection, but this does not mean that this server connected to the Internet speed is 100M. Only shows that your server is connected to the switch is 100M, unfortunately this does not make much sense, even if the server on the switch to the exclusive distribution of 10M, but your cabinet switch connected to the Internet backbone speed of only 10 megabytes, it is still not ensure that each server has a bandwidth of 10M real ah! Unless stated in the contract to ensure that each server connected to the Internet backbone bandwidth is not less than 10M, it is true, is not it? This move is misleading, many service providers do not write in the contract to understand, thus resulting in a lot of people really think they have exclusive 10M bandwidth, in fact, do not be strict.
  It should be said clearly, as to ensure and guarantee the server to switch 100M 100M servers to the Internet is completely worlds apart, which is why Fast shared hosting only 2,000 yuan per year, but once is truly exclusive 10 trillion, at every turn to get on the million per year? !
  Is the truth. Straight, but also to avoid disputes.
  4, the open-flow does not mean limited bandwidth limitations mean that anyone who does not limit
  In many managed the contract, often states: do not limit flow. Look good, in fact it should be clear, traffic is not equal to the bandwidth ah, do not restrict the flow does not mean unlimited bandwidth, like that of a water faucet, do not restrict flow, but limit flow rate, leading only to unscrew the thin trace, Although it is not restricted traffic, but also put an hour less than one tank of water. This is a play on words. Some custodian, made it clear that: we do not restrict traffic only, and does not limit the bandwidth! Listen very powerful, in fact, there are people behind the words: I do not limit you, do not limit others! Well, all nonsense, no restrictions, then a cabinet where several machines are doing the download and eventually we slow as an old ox, you find custodian theory, others argue: no way, I do not guarantee that your minimum bandwidth, I do not limit your traffic and bandwidth, it can not restrict other people’s traffic and bandwidth, bandwidth on so many, who’s machine is good, grab more, that is, who’s, I can not limit.
  They finally realize that this restriction is the most terrible, probably the slowest. If we do not know me give another example, such as at the crossroads, the general will have a traffic light, for the two roads is that there are “restricted”, but this restriction is to ensure smooth flow of traffic, but If we feel that the traffic lights is a waste of time, the traffic department to remove it, then the car plug on a brain child are gone, this time I am afraid you speed through the intersection will be very slow, this “does not limit” is became a “limitation” of the.

In recent years, rapid development of domestic high-tech industry, electronics, electrical, communications and information industry during the network system integration, network integration, automation of industrial measurement and control, information transmission and other specialized research and manufacturing process must be such as cabinets, cases, racks, etc. hardware products as the installation platform and the outer packaging.

And domestic support for the cabinet hardware products chassis as a starting point is low, slow development, and therefore lower the overall level of technology, the design is simple, single function, the degree of standardization is not high. Unable to adapt to the rapid development of modern electronics industry. Now the process of industrial manufacturing, data networking, test and computer technology becoming increasingly complex, and the increasing miniaturization of electronic devices, if not properly man-machine interface between these complex operations will be beyond human control. Western developed countries early in the last century took 60 years as an independent hardware support to the development of the industry, most of the engineering colleges will design structure class hardware design as taught courses, and gradually improve the formation of a unified standard. The “high standard for the 44.45MM of cabinets, racks of standard size” has been recognized by most countries around the world and accepted. And domestic debts in the history of this area in particular. Because this area has long been the industry at least not seriously, the domestic industry did not get the hardware to support reasonable development, is still retained metal case, the initial stage of assembling simple profiles, behind twenty to thirty years in Western countries. Also restricts the development of domestic high-tech industries continue to make China’s annual foreign exchange to buy abroad, to come up with a lot of precision enclosures, machine frames.

In view of this, we organize human and material resources, which lasted nearly two years, comprehensive study of the British VERO, Germany RITTRL, SCHROFF U.S. KSTGS, ELMASEF and many other world-renowned technology leader in the cabinet, chassis class the most manufacturers of end products of the latest tips , and the gathering house long, and combination of domestic processing technology can be designed to achieve a consistent “GB/T3047-2-2000″ version of a combination of European standards and related sections (see the pay figure I). Using this set of profiles, according to different requirements of customers with a variety of appropriate functional combination of the standard cabinets and special cabinets. Injection combined with our professionally designed accessories can be installed on a variety of complex electrical systems, mechanical accessories systems, disk drives and electronic modules system. A high degree of creativity, aesthetics and lightweight body, the use of safe, reliable, quick and easy installation. All 19 “Standard Series cabinet less than 1kg in weight, size precision parts to achieve 0.01-0.03MM, vertical and horizontal error can be controlled within 0.05 degrees. The use of certain standard parts, one person operation can be easily installed.

Scale of today’s society needs mass production of high degree of standardization, compatibility, suitable for mass production, but the customer’s purpose of use in a variety of requirements, specific solutions to specific problems that require fast random, production and demand contradiction great. Therefore, we will evolve into a variety of variants of a product, a variety, the use of modular parts, accessories, accessories assembled by the use of purpose combined to form a series. Such a high degree of product standardization, the advanced design concept, both their price advantage and meet customer needs. We are in the development of the design process, all using recycled, environmentally friendly recycled materials, determined to avoid any direct or indirect environmental impact.

Standard cabinet is widely used computer network equipment, wireless communications equipment, electronic equipment stacked cabinets with enhanced electromagnetic shielding, reduced set
Preparation work noise, reduce equipment ground area occupied by the advantages, for some high-end cabinets, also has the air filter to improve the working environment of precision equipment

Quality. Many engineering-grade devices are 19-inch panel width, so the 19 server rack-inch cabinet is the most common form of standard cabinets. Species of 19-inch standard cabinet

Class and style very much, but the points for import and domestic, price and performance gap is very obvious. Different grades of the same size cabinet prices may vary the number of

Times. Users install the optional standard rack stacking equipment according to the specific situation and Budget Comprehensive choose the right product.

         Compared with the cabinets, racks with relatively cheap, easy to move the advantage, but is generally open frame structure, unlike a fully enclosed cabinet

Or semi-enclosed structure, it is natural does not have the enhanced electromagnetic shielding, reduced equipment operating noise and other characteristics. Meanwhile poor cleanliness in the air environment,

Equipment fouling the surface more easily. Less demanding for some of the main rack of equipment stacked to reduce the footprint. The rack price is cheaper, so

For less demanding situations, the use of the rack can save a lot of costs.

          Relatively simple structure of the standard cabinet, including the basic framework, the internal support systems, wiring systems, ventilation system. Standard cabinet assembly according to form

Different type and material selection, performance and price can be divided into many grades. Overall there are 19-inch standard rack width, height, depth, three conventional indicators. Although

However, installation of equipment for the 19-inch panel width of 465.1mm, but the physical width of the common enclosure products for both 600mm and 800mm. Height from 0.7M-General

2.4M, according to the number of cabinet equipment and uniform style, and generally can be customized to specific vendors height, finished 19-inch rack common height of 1.6M and 2M. The depth of the cabinet from 400mm-800mm, the device according to the size of the cabinet, usually the depth of manufacturers can also customize special products, the common 19-inch cabinet depth of product 500mm, 600mm, 800mm. 19-inch standard rack height of installation of equipment share a special unit with “U”, said, 1U = 44.45mm. Use 19-inch equipment rack panels are generally manufactured according to specifications nU. For some non-standard equipment, most of them can be attached

Add 19-inch box fit into the tailgate and secure.

Cabinet cabinet materials and are closely related to the performance of manufacturing 19-inch standard rack materials are aluminum materials and two kinds of cold rolled steel material. By aluminum

Comparison of type material of the cabinet light, light equipment for stacking, and the price is relatively cheap. Aluminum materials are also imported and domestic of the points, the texture is not

Created with the cabinet so there are some differences in physical properties, especially in some of the larger size of the cabinet easy differences emerged. Cold-rolled steel plate manufacturing machine

Counters with high mechanical strength, load-bearing characteristics of a large quantity. Similar products in the steel plate thickness and quality of materials and processes are directly related to product quality and sexual

Energy, some cheap cabinets manufactured using ordinary thin iron plate, while cheap, look good, but the performance of natural greatly reduced. Cabinets are usually high quality

Heavier weight.

         19-inch rack assembly method from the point of view, there are basically integrated welded and assembled. Type of relatively inexpensive integrated welding, welding processes and production

Products of such material is the key to the cabinet, some low-quality products prone to experiencing heavy load deformation. Assembly-type is the more popular form, packaging

Are the parts needed can be quickly assembled, and easy adjustment of flexibility, some inferior products are often part of the interface is very rough, assembled together than

More difficult to shift significantly.

         Also making the cabinet level and the surface paint, and interior partitions, rails, rails, walk trough, sockets and accessories for the fine quality of the degree

Is a measure of the quality of the reference standard cabinet. Good standard cabinet is not only stable, in line with the mainstream of the safety regulations and equipment into a smooth, firm fixed

The front and back doors and side panels on both sides closed, good equipment, uniform force inside, and accessories rich, suitable for all kinds of applications.

Cabinet installation process should pay attention to the following content:
1. Cabinet installation to comply with the provisions of the relevant design drawings.
2. Cabinet installation to horizontal, vertical, vertical deviation should be less than 3mm.
3. Cabinet and the cabinet should be closely side, the cabinet should be in front of a plane, no obvious bump phenomenon.
4. Away from the wall behind the front cabinet from not less than 1m, the distance from the wall side must be greater than 0.8m.
5. Cabinet must not drop or break parts, cabinet paint in good condition, all signs should be correct, clear and complete.
6. Cabinet must have a shock reinforcement.
7. Chassis is securely installed.
8. The installation process whether the deformation of the chassis.

Purchasing power connectors server racks must be asked — outlet, with low temperature rise (25 ℃), anti-error interpolation, jack protection, precision plug, high flame-retardant casing (850 ℃) and other hard targets, including “temperature “Index is the most important one.

“Temperature” refers to the socket power under full load for one hour after power outlet at each terminal degree temperature rise. According to the national standard GB2099.1 \ \ \ \ GB2099.3 requirements, common indicators should pass outlet temperature is not higher than 45 ℃. If the temperature index more than 45 ℃, outlet inevitable in the course of overheating, shell deformation, leading to a fire danger. Under 25 ℃, only to meet the requirements.

If so, what factors affect the temperature rise in the level of indicators it?

First, the socket used for copper metal.

Conduction properties of different copper there is a big difference, to break through socket used by bodyguards of high-quality bronze, for example, due to its copper content up to 65%, the price is 4-5 times the normal copper; Secondly, copper cross-sectional area of ​​the size. Cross-sectional area is larger, the better continuity, temperature also smaller; third, the internal wire connection mode can also affect the temperature rise. Sockets used by bodyguards breakthrough in copper-free solder one connection, is an effective way to reduce the temperature rise; fourth, socket insert set precision and flexibility, close contact with the plug can also affect the degree of temperature rise. The closer contacts, the smaller temperature rise.

Another factor is the temperature of the space inside the socket design. There are many outlets on the market today may look small and exquisite, but the reasonable expense of the socket interior space is not conducive to heat distribution. Socket is used in breaking bodyguards ultra-low temperature space design, to ensure good looks, while leaving enough space for heat dissipation inside, can effectively avoid the outlet to work long hours, excessive heat caused by the internal accumulation of shell variant.

Listed in breaking new cabinet bodyguard special series socket, not only temperature performance, but also to add product intelligent core M & G surge protection, smart IC leakage protection, thermal kinetic energy overload protection, double-action doors and many other countries, protection of patent protection technology, for an ensemble of matching cabinet makers to install. Breakthrough has now Rittal bodyguards, Lucent, Bell, Novelty, Xiang Ming, VERO, and many other well-known rack manufacturers, and earmarked for China’s aerospace products, China Posts and Telecommunications Industry Corporation (CTC) of the designated outlet.