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Thứ Sáu, 3 tháng 6, 2011

Shared Hosting, VPS and Dedicated Web Hosting

By Matt Ewing


Due to the rapid speed of success achieved by web hosting companies, web hosting services have become a trend in online business. A web hosting company hosts your website, whether personal or professional. It can also provide you with a host of benefits, and to add to it, your to-be employers might also appreciate seeing your details from your own website, rather than from any other place. Internet has emerged as a great medium for conducting business, and a website is a prerequisite for this purpose, which facilitates the need of a web hosting company. To make such things work, a webmaster must be aware of how important web hosting is.

There are several types of web hosting like shared hosting, VPS hosting, dedicated hosting, free hosting, paid hosting and clustered hosting. While choosing a web host for yourself, choose among these available ones but according to your needs and demands.

Three common kinds of web hosting are as follows:

Shared hosting

A shared host is a server which supports many web pages. A shared host is generally the best for a business where the expenses does not permit them to go for the dedicated web hosting services, and a shared hosting helps them save a lot of unnecessary expenses as well.

In case of shared hosting, various maintenance features like server management, security updates, server software and anti-virus backup are provided by the provider of the shared hosting.

There are primarily two ways of web hosting: the IP address based way and the name based way. The host who with own individual IP address provides each of the sites he hosts with their own SSL certificate in the IP address based way. Consequently, a sense of security is endowed to the websites. Various web hosts are provided with a single address in the name based hosting. Everyone uses this particular IP address.

The sense of security that comes with the IP based hosting may not come with a shared host. On the other hand, the shared host might come cheaper than the IP based hosting.

The name-based web hosting system has other drawbacks as well. They are not fully compatible with old browsers. So an HTTP/1.0 browser will be unable to send requests which carry the name of the host, unless they are upgraded. Due to the fact that they share a common digital certificate, they even cannot support HTTPS websites. It becomes impossible to access them if the Domain Name System chokes out a website which a name-based web server hosts.

Despite the cost effectiveness of a shared web hosting system, some of its other problems are that of disk space, CPU and Bandwidth of your website being affected or slowed down because of other sites using the same server. Control over certain system level things like scripts and the system software being used is also beyond your control if you are on a shared hosting system. But if your website is relatively small you can comfortably make do without such features. If such things do bother you and you want some control over the things that power your website, you might want to know about Virtual Private Server or VPS.

Virtual Private Server (VPS)

A VPS like a shared server also has one server only, but the software of the system divides it into several 'virtual machines'. Therefore though the server's total resources are still shared by the various websites being hosted but each such VPS gets their own allotment of RAM, disk space etc and operate completely independently using the allocated resources.

You can do various things as you are granted this much greater freedom when compared to a shared host. These different things range from running a totally different OS to having your own scripts and choice of software, without disturbing the other sites on the server.

The kind of access that you may get to the main server in case of VPS is almost similar to the kind of access that you could get in a dedicated server. The only difference is that installing software and scripts can be done at a much lower cost in the case of VPS.

Because of the internal division of a VPS system, the sense of security is much greater than a shared hosting service. In the latter, all sites are at a risk if the main server is hacked into, but that is not the case in a VPS system.

As far as the division of the server is concerned, it usually occurs evenly with the total equal distribution of resources among the number of websites that are sharing the server. So, if there are 10 websites on a VPS server, everything starting from the disk space to the RAM is divided into 10 parts, with each website getting 10% of the whole.

Dedicated hosting

As mentioned earlier, dedicated hosting is meant for huge concerns who wish to have sufficient control of the website in their hands. In this case, a website gets a single server for its individual capacity, thus giving webmasters total control of the website. Besides the software, all other factors like supervision of power, security, etc. is addresses by the web hosting company.

Dedicated web hosting is the best choice is you need high amount of bandwidth, more disk space and a customized server. Besides, you get to choose the features for the website as well, like the software, settings, operating system and multimedia requirements. It's a good option to consider if you can't manage a private server due to limited expenses.

A dedicated server can also bail you out and save expenses up to 85%, if your website has a high traffic count but you do not have the monitory resources and technical know how to maintain, install and run your own IT staff, programs that will run everything smoothly and most of all if you can't pay for a network administrator.

As you know that you are the only one using this server, a dedicated server thus offers 100% assurance and security to you. Downtime problems and security issues are also solved if there are no other sites on the server. Companies feel safer using a managed dedicated host providing additional data security. This is especially true for companies that have client databases and other important information up on their sites.

While shared web hosts come cheaper, they also come with the heavy burdens of ominous security concerns and accessibility concerns if other sites face heavy traffic at any point. Using a dedicated server might cost a lot more, but provides you with the comfort and knowledge that you are using a thousand time safer server and one that shouldn't be slowed down by traffic of other websites. A dedicated server, therefore, is perfect for those looking to expand and grow in their businesses.




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