The force driving server virtualization is similar to that which led to the development of time-sharing and multiprogramming in the past. Although the resources are still shared, as under the time-sharing model, virtualization provides a higher level of security, dependent on the type of virtualization used, as the individual virtual servers are mostly isolated from each other and may run their own full-fledged operating system which can be independently rebooted as a virtual instance.
Partitioning a single server to appear as multiple servers has been increasingly common on microcomputers since the launch of VMware ESX Server in 2001. The physical server typically runs a hypervisor which is tasked with creating, releasing, and managing the resources of "guest" operating systems, or virtual machines. These guest operating systems are allocated a share of resources of the physical server, typically in a manner in which the guest is not aware of any other physical resources save for those allocated to it by the hypervisor. As a VPS runs its own copy of its operating system, customers have superuser-level access to that operating system instance, and can install almost any software that runs on the OS; however, due to the number of virtualization clients typically running on a single machine, a VPS generally has limited processor time, RAM, and disk space.
What is VPS Hosting?
VPS hosting is a Virtual Private Server, and is a virtualized server. A VPS hosting environment mimics a dedicated server within a shared hosting environment. It is technically both shared hosting and dedicated hosting.
VPS Hosting is one of several types of web hosting accounts you can choose from to host your website online. To have a website on the internet, you need to have your website files on a web server.
Setting up and managing a server can not only be expensive, but difficult too. Purchasing web hosting allows someone to rent space on a web server, making it easier for the average person to have host a website online because all they need to do is upload their site files (no server setup is needed on their part).
Why is VPS Hosting different than Shared and Dedicated
With our dedicated servers, you rent an entire server. This is optimal for people that have very high traffic to their websites or need to setup their server in a very specific way. Not everyone needs to have a fully dedicated web server however. If you’re just getting started with your website, you can save quite a bit of money if you rent a small portion of the server. Shared hosting is when you share a portion of the server with other users rather than rent an entire server to yourself.
If you are considering a dedicated server and are unsure if it is right for you, perhaps you will need to get VPS hosting.
How does VPS Hosting Work?
The technology behind VPS hosting is similar to that of VMware or Virtual Box. These programs allow you to run several virtualized operating systems on one machine. For example, your desktop may be running Windows 7, but you can also run other operating systems such as Windows XP or Linux without needing to restart your computer.