A VMM (Virtual Machine Monitor) is also known as a hypervisor. It is responsible for managing and coordinating the virtual machines (VMs) running on a physical server. Some of the key responsibilities of a VMM are:
Resource allocation: The VMM is responsible for allocating resources to the VMs, such as CPU, memory, and storage, and ensuring that each VM has access to the resources it needs.
Resource isolation: The VMM provides resource isolation between VMs, ensuring that the activity of one VM does not impact the performance of other VMs running on the same physical server.
Hardware emulation: The VMM emulates the hardware of the physical server to the VMs, allowing each VM to run its own operating system and applications.
VM lifecycle management: The VMM manages the lifecycle of the VMs, including starting, stopping, pausing, and migrating VMs between physical servers.
Security: The VMM provides security features such as isolation, access control, and secure boot to ensure that the VMs running on the physical server are secure and protected from attacks.
Monitoring and reporting: The VMM provides monitoring and reporting capabilities to track the performance and health of the VMs running on the physical server, enabling administrators to troubleshoot issues and optimize resource utilization.
Overall, the VMM plays a critical role in enabling virtualization and providing a secure and efficient platform for running multiple VMs on a single physical server.
