VPS hosting is like you are living in an apartment complex. It means that other people are living in the same building, but you have your own secure apartment. You will get more room and restrictions will be fewer as compared to living in a dorm. It also means that if your neighbour is misbehaving, it is the problem of owner of building, not yours.
Thanks to a hypervisor, a guest OS does not ‘know’ about other virtual machines on a bare-metal server. Like that frog who lives in the well thinking he is in the ocean, a virtual machine ‘believes’ that it is a physical server. In this case, theuser can have root access to a VPS and control its software. Additionally, if we decide to upgrade something or change a physical machine altogether, we do not need to make changes in a guest OS. Let’s get a closer look at advantages of VPS hosting.
Dedicated server hardware is also limited to a single tenant usage whereas VPS hardware is shared by multiple hosting customers on one partitioned web server. The latest trends in web hosting have seen companies move beyond the single server model on cloud, VPS, & shared platforms to host multiple copies of a website's files and use network load balancing software to route traffic to the hardware with the most open processing capacity for better response times.
This doesn’t happen with VPS hosting because each mini-server has its own allotment of resources. You can’t use more resources than your allotment, but that also means that no other site can take resources from you. Basically, it is like having a smaller size dedicated server without having to pay the hefty ($100 per month or more) price tag that goes with a dedicated server.
A VPS doesn’t just have more RAM, disk space, and a proprietary share of CPU than a shared account. Depending on the provider, some VPS plans offer burstable memory, which is a pool of RAM set aside for extraordinary events. This is the stuff that can help counter the so-called “Digg-effect,” that much-whispered about occurrence that’s the simultaneous hope and fear of everyone who runs a web site. When you have an unexpected high traffic event, burstable memory will call on a pool of reserved, shared memory to satisfy the needs of temporary high traffic. This is not available on shared servers and, while the necessary memory is available on a dedicated server, your site might not get the kind of traffic on a daily basis to justify the expense of a dedicated server. Again, not all VPS plans have burstable memory, so ask your provider if their VPS plans do.