VPS stands for Virtual Private Server. In order to understand what it means and how it works, first, we need to understand each of the three terms below:
Server – place where files and data stored.
Virtual – not physical; virtual environment created by software.
Private – restricted for your website’s use.
Let’s compare traditional Web hosting (shared) and a Dedicated server.
In shared web hosting, your website will be storing and dividing space and resources with hundreds of other websites that are also hosted on the same server.
On a dedicated server, the physical machine (server) hosts only your website. It is dedicated exclusively to you and your web page.
In this scenario it’s easy to imagine that shared hosting has resource limits when compared to those of a dedicated server.
This difference will also reflect on the price of such services. A dedicated web host costs a lot more on a monthly basis than a traditional web host. That’s because on a shared host, a single server is divided amongst multiple clients and costs are split between them as well, thus allowing this service to be offered to people at a lower price. Meanwhile, with a dedicated host, the cost is exclusively billed to a single client, making the costs significantly higher. With this being said, it would be great if we could have an intermediate option. One with more resources than a shared host, and not as expensive as a dedicated server. That’s where VPS comes in.
Virtual servers (VPS) are “virtualized” within a single physical server and acts as a dedicated server.
It has the resources and capabilities similar to those of a private server, but with a lower threshold. The server that hosts a VPS also shares its resources with other customers, as in a shared host. However, the total number of clients sharing the server resources is much smaller
The virtual server runs within a physical server, but its resources and capabilities are well defined and separated into each virtualized environment. This ensures that a site will not affect in any way, another site hosted on the same server. That’s because each site has its own virtual server, with resources dedicated to the site in question.
Another interesting point is that a VPS uses its own operating system, independent of the operating system used by other customers and the physical server that hosts all other VPSs.
As mentioned earlier, the VPS server acts like a dedicated server, but in a shared environment. The big difference compared to a shared server is that the VPS user has root access (administrative) to the server, which means that you can configure and install the applications and programs you want, which would normally not be allowed on a shared server. In addition, each VPS has its own resources, thus ensuring that a virtual server will not interfere with another that is hosted on the same machine.