Hence, my recent move from a server hardware at home to a rented dedicated server running in a datacenter, was a perfect time to investigate Type 1 hypervisors. Therefore, Type 1 hypervisors are great for rack installs or hosts that are located in a datacenter. The disadvantage of a Type 1 hypervisor is that, since there is no desktop environment you typically don't/can't use the host as a workstation. VirtualBox on Ubuntu Server).Īfter initially setting my first Proxmox server couple of months back, I am yet to do perform any kind of major maintenance activity on the host.
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Ī type 1 hyeprvisor's overhead and maintenance after initial setup are quite less compared to a full blown base operating system in a Type 2 hypervisor (eg. Type 1 hypervisors typically have no Desktop Environments and are accessible only a Web Interface and SSH.
Unlike Type 2 hypervisors which require a base operating system, Type 1 hypervisors like ESXi or Proxmox VE typically are lightweight operating systems. Therefore, Proxmox is considered a Type 1 hypervisor. But it uses KVM (Linux Kernel-based Virtual Machines) by default, which converts a host operating system to a hypervisor. Note: Proxmox can run on top of a base operating system as well. The virtualization engine then allows creating isolated guest machines.įew common examples of Type 2 hypervisor include: Oracle VirtualBox, VMware Workstation, and Microsoft Virtual PC. Type 2 HypervisorĪs depicted in the picture above, in a Type 2 Hypervisor, the virtualization engine runs on top of a host operating system like most computer programs/apps. This operating system then allows managing one or several baremetal servers (nodes), each with one or more virtual machines.įew common examples of Type 1 hypervisor include: Proxmox VE, VMware ESXi, Microsoft Hyper-V, and Citrix/Xen Server. Type 1 And Type 2 Hypervisors Type 1 HypervisorĪ Type 1 or baremetal hypervisor is a lightweight virtualization operating system that runs directly on the host hardware. There are two main types of hypervisors: Type 1 and Type 2. Hypervisors allow running guest operating systems in isolation from the host operating system, while allowing the guests to use the host's hardware resources. This is where types of Hypervisor comes in. So how are Proxmox or ESXi different from VirtualBox? We have also covered the differences between Docker and VirtualBox. In the past, I have written several articles on VirtualBox. For more details, you may refer to this Wikipedia article. For the purposes of this post, this short explanation is sufficient. The system on which the hypervisor runs is called a host and the virtual machines are called guests.
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