KVM vs OpenVZ Virtualization

Find out the difference between the two virtualisations we offer on our VPS services.

What’s the difference between KVM & OpenVZ? What should I choose?

We get this question a lot! In short virtualization involves breaking down one physical server (“host node”) into smaller virtual private servers. There are various technologies that help do this of which we offer two of them. We take a dive into the advantages and disadvantages between KVM & OpenVZ which should help in making your decision.

Quick Comparison

KVM (Recommended) OpenVZ
Dedicated Latest/Custom Kernels
Shared Host Node Kernel (2.6.x)
Disk Encryption
Wide Range of Operating Systems Limited
Custom ISO
Docker Support
Second Level Quota Support
Advanced Firewall Configuration
Free Basic Support

*Please submit ticket to support to enable second level quotas/fuse on OpenVZ VPSs.

KVM – Hardware virtualisation with full control

As of 2019, OpenVZ 7 proving unpopular without significant benefits, KVM based VPSs are our recommend choice unless you are on a tight budget or running basic services.

KVM simulates hardware allowing multiple guest OS to co-operate with the hypervisor (main server – “node”). The major advantage of of a KVM VPS is that it allows you to work with any OS and use the latest (and custom) kernels. It also fully supports SELinux and disk encryption which may be important to you. As a result you can also perform custom installation like you would do on a dedicated server and go through the OSs installation process and perform custom partitioning/encryption. In addition, our OpenVZ plans do not support Docker however due to KVM virtualization our KVM plans can run Docker.

However, on the other hand by default even on a clean install a KVM VPS will generally demand more resources and does not allow hosts to oversell significantly as such these VPSs generally cost more despite this we believe our KVM plans are one of the most competitive and affordable out there!

  • Full Virtualization
  • Latest/Custom Kernels
  • Docker Support
  • Disk Encryption
  • Disk Partitioning
  • Less VMs per node
SSD VPS Plans »
OpenVZ – User friendly linux containers

OpenVZ is an operating system level virtualization in which the linux kernel is used to split the OS into containers and the kernel itself is shared among the VPSs. As a result it consumes far less resources than a KVM VPS but it is not true virtualisation and you cannot control certain things such as custom/latest kernels, disk encryption or run non-linux operating systems like Windows and our OpenVZ plans do not support docker at this moment of time.

However as a result of the far less resource utilisation and simpler more user friendly setup this is the most cost effective option.

OpenVZ Plans » Storage VPS Plans »