Virtual private server hosting (VPS hosting) splits a server so that one half runs one operating system and the other half runs a different system. Since each operating system is independent, they can be rebooted separately without affecting the other. Partitioning has been a common practice over the past few years but is making a strong reappearance due to the virtualization technology now available.
How it works
In lemans terms, the operating systems share the overall resources of the server. It’s split between the main system and the “guest” system. In this virtual environment, the guest system can utilize a virtual set of hardware of which it’s unaware that the hardware is not physical.
The hypervisor; which is responsible for creating, destroying, and managing the resources of the guest, translates maps and converts all requests from the guest to the appropriate resources on the server.
The main use of VPS hosting is to bridge the gap between shared and dedicated hosting providers. This gives the users independence from other customers in terms of software, but allows them to still remain on a shared server which significantly decreases the cost.
Another use is for software upgrade testing. If a single server with two virtual servers running; one primary and one for backup, need to be updated, the patches and software can be tested on the backup segment so it doesn’t disrupt normal uptime.
Additionally, virtual servers can be employed to run software with known security issues without interrupting the main server. This can be tremendously beneficial for further testing software for the flaws that may accompany it.
An even newer trend is dynamic dedicated server hosting. This is actually a virtual dedicated server that allows companies exclusive access. There are two types of dynamic dedicated server hosting:
In this instance, unmanaged hosting is simply a server that is administered by the company paying for the hosting package. Similarly unmetered hosting is also unmanaged, but with a fixed data transfer rate so the monthly allowance is not exceeded.
Although virtualization has been used for many years, the comeback of this technology in relation to web hosting has been enormous. There are many benefits that make this technology appealing to businesses. As the web sector continues to grow and expand, VPS will become a more popular web hosting option.