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Proxmox High Availability by Simon M.C. Cheng

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Virtualization options in Proxmox VE

There are two types of virtualizations available in Proxmox: OpenVZ and KVM. What are the differences between them?

OpenVZ is an operating-system-level virtualization based on the GNU/Linux kernel and the host operation system. Theoretically, OpenVZ is not a type of virtualization but more like the jail concept in Linux. Since a patched Linux kernel is needed, only Linux guests can be created. All guests are called containers that share the same kernel and architecture as long as the host OS, while each container reserves a separate user space.

There is no overhead for OpenVZ as containers can call hardware resources directly. However, since all containers share the system kernel of the host OS, a system-related ...

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