The two environments have plenty of overlapping qualities, but most importantly Dedicated Server render greater security, customization and excellent availability. With granular control, you are free to customize hardware components like disk space or RAM and installation of unique operating systems. More substantial computing power (CPUs) and disk space allow Dedicated servers enhanced performance for high amounts of traffic. When uptime and performance are critical to your business Dedicated Servers are second to none for hosting.
Way of using resources In the case of shared hosting, websites and / or applications residing on the server make use of resources and available server capacity at the same time. In the case of VPS hosting, each websites and / or applications residing on the server is being allotted a virtually distinct server. Here a separate, exclusive server is often rented.
The golden rule for unmanaged VPS hosting is this: If you have a problem with your unmanaged VPS Account, it is your problem. If the problem is software related, resource related, performance related, need troubleshooting or configuration of software, or need general help understanding Unix or server applications, you are on your own and should not expect help from the web host.