Features of virtual dedicated server

Added: 10/27/2005

The advantages of the virtual dedicated server technology are obvious to anyone, who would like to purchase a good professional hosting for his projects. Such systems allow the distribution of the hosting resources between multiple customers efficiently. At the same time, one physical machine can serve for the purposes of different private persons and organizations.

There are some solutions for the multiple web hosting customers that can satisfy their needs in the Internet. The most popular way to buy the hosting services is to obtain a place at a virtual server. Actually, it means that your web site will be displaced at the common provider's server among many other web pages and sites. A virtual dedicated server is another solution that is more convenient, reliable and safe. In this case, the client has a standalone server. However, such service has a much higher cost.

The hosting providers install some specific software at the virtual dedicated server in order to use the same physical machine as a virtual one. Each virtual dedicated server can posses its own operation system, the access permissions, settings, etc. It is very important that there are no links between the isolated virtual machines. The virtual dedicated server owner has the next opportunities: a full access with the root permissions, an ability to perform any adjustments of the system, an installation of any software and applications, a full control for all executed processes and registered users. A virtual dedicated server has its own IP-address, routing rules and ports.

A high level of the site security is an obvious advantage of the virtual dedicated server technology. When the hosting provider uses simple virtual servers, then, the malefactor has possibilities to obtain an access to all the projects at the server. It is impossible for the virtual dedicated servers, since each of them is not linked to another one. Any actions with a virtual dedicated server can not affect the work of the others.

The VPS technology is very close to the dedicated servers. However, the VPS user cannot choose the operation system. Another difference between these technologies is the distribution of the physical machine resources. As a rule, the virtual dedicated server uses only one part of the computer's resources. Most part of the hosting providers guarantees the minimal volume of the resources, depending on the tariff plan.

You should note one advantage of the VPS technology against the dedicated virtual server. In this case, the hosting providers perform all the functions of the server administration. They monitor the computer's workability, update the operation system, etc. the customer of the dedicated server must do it by himself or pay to the provider additionally.

The provider needs special software to install some virtual dedicated servers at one computer. There are some products of that kind at the modern market. The most popular technology is Virtuozzo that allows to provide a dynamic distribution of the computer's resources, isolation of the virtual dedicated servers from each other, virtualization of the installed operation systems, etc.

In this way, the virtual dedicated servers are very interesting for many companies that need a good hosting with all the functions for a reasonable price. Although this service is not very popular yet, it will be required in the future, since the Internet structure becomes more complex and attractive for the business purposes. That is the reason why the VPS and the virtual dedicated servers will be used very often in the nearest years.

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