Which type of hypervisor runs directly on the hardware of the host machine?

The type of hypervisor that runs directly on the hardware of the host machine is the Type 1 hypervisor. This hypervisor is also referred to as a "bare-metal" hypervisor because it does not require a host operating system to function. Instead, it interacts directly with the underlying hardware, allowing it to provide better performance and efficiency for running virtual machines.

One of the primary advantages of using a Type 1 hypervisor is its ability to manage resources more effectively and provide a greater overall level of isolation between virtual machines. This architecture makes it ideal for enterprise environments where stability and performance are critical, such as data centers and cloud infrastructure.

In contrast, a Type 2 hypervisor runs on top of a traditional operating system, which introduces additional overhead and can limit performance and resource management capabilities. This difference is essential for understanding the deployment scenarios for each type of hypervisor. Virtual machine managers and server managers are not specific types of hypervisors but rather tools used for managing virtual machines and server resources.