Compare OpenVZ vs Xen

At Quantact, we offer both OpenVZ and Xen virtual private servers. Each approach offers full Root access to your own virtual server.
OpenVZ offers fast and lightweight virtualization, where Xen offers a highly configurable virtual server.
To help you choose which virtual server is best for you, we've provided a summary.

OpenVZ Virtualization  Xen Paravirtualization

OpenVZ is an operating system based virtualization. The host servers kernel is modified to provide each virtual server with Root access, its own process space, and memory/disk/network resources. Without the overhead of its own Linux kernel, OpenVZ offers fast and lightweight virtualization, with more of your resources available for use.


Xen is a paravirtualized system, which gives each virtual server its own Linux kernel that has been modified to run on the hosts hypervisor. Each virtual server functions as its own Linux system, giving your Root access, and access to kernel modules. This approach leads to a highly configurable virtual server.

  • Root access
  • OS virtualization
  • Plan upgrades applied live without reboots
  • More plan resources available due to lightweight virtualization
  • Easy setup of network/disk
  • Great for projects where paravirt is not needed
  • Access to most iptables modules
  • Root access
  • Paravirtualized Linux kernel
  • Access to loadable kernel modules
  • Swap space
  • Best if you run Java applications
  • Highly configurable
  • Boot from your own PV-OPS kernel via PV-Grub
  • Rescue Mode and Xen console for access

Both OpenVZ and Xen provide Root access virtual private servers. If you are unsure which is right for your needs, you can always switch between the two by opening a help ticket with support. We recommend OpenVZ if you are new to Linux, as Xen is more configurable, and may require more Linux administration skill.

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