In Russian practice, these names have become associat with a certain type of virtualization. Some hosters can provide VPS and VDS as separate services for this very reason. Let’s look at which technologies are us most often. Virtualization technologies The process of creating virtual machines is call virtualization. It can be done in different ways, but the proc ure is always bas on a hypervisor. This is a program that allows you to separate the software from the physical devices that execute it and, thanks to this, run several operating systems on one server at once.
There are two levels of such modification: software and hardware
The most prominent of them are OpenVZ and KVM technologies – the concepts of VPS and VDS are ti to them, respectively. Let’s consider how gambling number data they differ. So, software virtualization (like in OpenVZ) assumes that all guest OS (i.e. install on virtual servers) will be just copies of the system on which the host runs. For example, OVZ is bas on the Linux kernel, so all containers inside the host server must use exclusively Linux distributions.
A client renting a VPS with such virtualization
Will not be able to modify the kernel and implement additional modules. However, he will not have limitations in the internal software in the first option environment, and the amount of available resources can be chang with one click without rebooting the server. With a hardware solution (like in KVM), the hypervisor is implement directly on top of the bare metal
Which makes it possible to implement
Any images as guest systems, without buying house b being ti to the host OS. That is, even if KVM is bas on Linux, virtual machines are not requir to do the same. You can install even Windows Server if the client requires it. In this case, he will be able to make changes to the kernel and implement, for example, OpenVPN.