A virtual server and a dedicated server differ by the number of users that possess resources on a physical server. With a virtual private server, some of the resources are isolated for individual users, but there are multiple users on the same physical server. With a dedicated server, a single user has access to all of the resources of a physical server.
Because you only are using a portion of the resources for the VM, you can have several of them running on one computer or server, as is common with hosting services. A hosting provider that offers VPS hosting has a vast number of physical servers that each contain multiple virtual machines. While demarcation and intrusion prevention within the physical machine is not a huge concern on your own PC, VPS hosts must have security safeguards in place to ensure isolation of each customer’s server. That’s why the terminology virtual private server is used – to denote the attention paid to privacy and the server programs that are typically loaded onto this type of VM.
If you already have a number of clients hosted with various other cPanel-based hosts, our VPS Hosting plans all come with Launch Assist, 2 free hours of time with our System Administrators that can be used for migrating your sites. cPanel also has a powerful interface for transferring multiple accounts, providing you have root and SSH access to your current server. This transfer tool, which has step-by-step walkthrough and documentation on the cPanel site, was created to help designers, developers and agencies to quickly and easily move a number of accounts from one server to another.
With VPS Hosting you don't share resources because you have defined memory and bandwidth allocations within your virtual environment. A VPS will give you far more bandwidth and disk space and ensure you are never compromised by someone else's website. It's also a more flexible solution if your website grows and you need to move to another server – since it's easier to move a VPS to a new physical server than to transfer the contents of a dedicated server over to a new host.
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.
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.