A virtual private server (VPS), also called a virtual dedicated server (VDS), is virtual that appears to the user as a dedicated server but is actually installed on a computer serving multiple web sites. It runs in software on the same physical computer as other customers' virtual machines but is totally like a separate physical computer and has the privacy of a separate physical computer.
Some advantages of a Virtual Private server are:
-Each VPS can be independently rebooted
-Every VPS has its own operating system
-Every VPS has its own copy of the operating service. Users can install any software that needs that operating system
-The webmaster can choose any type of operating system and web applications that he requires running his website effectively
-As the VPS is isolated from other websites, that is, the VPS does not interact with other websites present on the physical server, the security aspect of a VPS is much stronger than the risky shared web hosting server, where a harmful script or application used by another webmaster can harm your website.
- If you go for a Virtual Private Server account, you will have more services and tools from your web host much more than what is offered with the shared web hosting service
Some Disadvantages of a Virtual Private server are:
-Since you're in control of the server, you are also responsible for all installation, maintenance, security and updates. If you are not very good and professional with this, you could be facing problems.
-VPS can have limited random access memory (RAM), central processing time, and server disk space.
-The hardware resources of the physical web server are still shared by the many websites that use the server, so your VPS may not be able to use maximum amount of RAM, disk space.
