Monthly Archives: November 2019

What is the Difference Between KVM and OpenVZ

With the evolution of new hosting technologies, solutions like VPS Hosting seems to be on the rise. As the name suggests, VPS runs on Virtual Private Servers which use virtualization to isolate servers from the host machine. A VPS network is designed in a manner wherein the main physical server is separated into multiple smaller servers. Each such smaller server is complete in itself with its respective hardware, applications, storage, and more. The technique of virtualization makes this hosting technology unique and more efficient. Now, there are two types of virtualization – KVM and OpenVZ.

Let’s look at what each of entail.

KVM or Kernel-based Virtual Machine is a technology that runs on the Linux kernel of VPS hosting server. It transforms the kernel into a hypervisor, which then helps create multiple virtual servers, also called guest machines. In a way, KVM is responsible for the isolation of servers on the host machine.

OpenVZ is a virtualization technology that runs at the operating-system level, which is usually Linux. Although the virtual servers are isolated, they all run on the same operating system, facilitated by OpenVZ.

Each of these technologies has its own advantages and disadvantages and come with respective functionalities.

Key differences between KVM and OpenVZ

KVM is highly versatile and customizable. While it runs primarily with Linux OS, KVM also supports almost all currently used operating systems like, CentOS 6 / CentOS 7 / Ubuntu 16.04 / Fedora 23 / Debian 8, Plesk Onyx, etc.

Furthermore, with KVM, you can always set the lowest or highest values for your resource utilization on the system. This allows you to use only what your applications need or demand, thus optimizing resources and performance at the same time. Since KVM helps isolate servers completely, each such server has its dedicated resources, … Read More ...