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  • 7.1 Zones:  OpenIndiana supports operating system-level virtualization with local zones (containers) allows to run processes using the same OpenIndiana kernel and system resources. Overheads are the lowest, while processes are isolated, but they are still UNIX processes. It is possible to use "branded" zones to emulate certain releases of other UNIX OSes, including Solaris 8, 9 and 10 (specify supported release-update numbers) and a Linux environment similar to kernel 2.4-based RHEL/CentOS.
  • 7.3 KVM:  (correction may be needed) Type-1 Hypervisor with QEMU-based KVM (since development release oi_151a), where each VM is a kernel-space process with smaller latencies and overheads in comparison to Type-2 virtualization.
    Xen-based virtualization (also rooted in QEMU(question)) was at some time part of OpenSolaris project, but became outdated and was ultimately dropped due to lack of resources and invested interest.
  • 7.2 VirtualBox: Type-2 Hypervisor with VirtualBox software running in a global or local zone. Each VM is a userspace process for the physical host.

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