What is a Type 1 hypervisor?
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A Type 1 hypervisor, also known as a bare-metal hypervisor, is a virtualization technology that runs directly on the physical host's hardware without the need for a pre-existing operating system. It is responsible for managing and allocating physical resources, such as CPU, memory, and storage, to multiple virtual machines (VMs) running on top of it.
In other words, a Type 1 hypervisor is a standalone software layer that creates a virtual environment in which multiple operating systems and applications can run independently of each other. It acts as a mediator between the underlying hardware and the virtual machines, providing each VM with its own set of virtualized resources that mimic the physical hardware.
Since a Type 1 hypervisor does not rely on an existing operating system to operate, it offers several advantages over Type 2 hypervisors. For example, it provides better performance, security, and reliability because it has direct access to the underlying hardware. It also allows for more efficient use of resources since there is no need for a host operating system to be running.
Some common examples of Type 1 hypervisors include VMware ESXi, Microsoft Hyper-V, and Citrix XenServer. These hypervisors are often used in data centers and other enterprise environments to consolidate servers, reduce hardware costs, and improve resource utilization.