Best answer

Virtualization technology

People also ask

  • What is the difference between a PV domain and a Xen?

  • Xen is an hypervisor that runs on metal (the pc / server) and then hosts virtual machines called domains. A Xen PV domain is a paravirtualized domain, that means the operating system (usually we’re talking linux here) has been modified to run under Xen, and there’s no need to actually emulate hardware.

  • What is Citrix XenServer?

  • Citrix XenServer is an open source server virtualization platform based on the Xen hypervisor. Citrix also offers a supported version that you can purchase, with two options: Standard and Enterprise. This platform is used by virtualization administrators to deploy, host and manage VMs.

  • What is a Xen HVM domain?

  • A Xen HVM domain is hardware emulated domain, that means the operating system (could be Linux, Windows, whatever) has not been modified in any way and hardware gets emulated.

  • What is the difference between Xen and KVM?

  • Xen (both PV and HVM) can do live migration of a running guest from one physical server to another, I don’t know if KVM can too. Both Xen and KVM cannot overcommit memory so you usually get true RAM, while other platforms like VMware can swap part of the guest ram to disk.