What is the difference between KVM and OpenVZ?

KVM is true virtualization where the VPS operates as its own server, independently of the host node. OpenVZ is a container style of virtualization which relies on the host node's kernel. KVM has no restrictions in terms of functionality, but it has more overhead than OpenVZ. OpenVZ is constrained by the host node kernel, but it has less overhead in the containers themselves. KVM is generally more stable than OpenVZ.

KVM VPSs are not dedicated environments. Both virtualizations share host CPU and network port among all VPSs. Only our VDSs include dedicated CPU.

  KVM OpenVZ
CPU Performance   X
Network Performance X (with virtio)  
Disk Performance X (with virtio)  
Can upgrade distribution version without reinstall X  
Can use Windows/BSD X  
Can change kernel X  
Can use application containers (Docker, etc.) X  
  • 398 Users Found This Useful
Was this answer helpful?

Related Articles

How do I order more bandwidth?

To order extra bandwidth, log into the Client Area. Go to Services > View Available...

Do I need a domain name (FQDN) for the hostname?

No - the hostname is an arbitrary identifier for your VPS. It can be either a Fully Qualified...

Do you SWIP IPs for customers?

Yes, we offer SWIP upon request. Please submit a ticket to request SWIP for your VPS IP(s)....

My KVM VPS Fails to Boot

If your KVM VPS refuses to boot, and particularly if VNC refuses to load, make sure you have...

What is the SolusVM Client API URL?

https://vpscp.ramnode.com/api/client/command.php