What Is Hypervisor In Cloud Computing? In the realm of cloud computing, understanding the role of a hypervisor is crucial. A hypervisor, also known as a virtual machine monitor (VMM), is software that creates and manages virtual machines (VMs). It allows multiple operating systems to share a single hardware host. This means that the physical resources, like CPU, memory, and storage, are allocated to different VMs as needed.
Hypervisors come in two main types: Type 1, or bare-metal hypervisors, and Type 2, or hosted hypervisors. Type 1 hypervisors run directly on the physical hardware. This type is often used in enterprise environments for its efficiency and performance. Examples include VMware ESXi and Microsoft Hyper-V. On the other hand, Type 2 hypervisors run on a host operating system. They are typically used for development and testing purposes. Examples of Type 2 hypervisors include VMware Workstation and Oracle VM VirtualBox.
Security is a significant concern in cloud computing. Hypervisors play a critical role in isolating different VMs from each other. This isolation ensures that if one VM is compromised, the others remain unaffected. Hypervisors also manage resource allocation, preventing any single VM from monopolizing the system’s resources.
Another essential feature of hypervisors is their ability to facilitate live migration. This process involves moving a running VM from one physical host to another with minimal downtime. Live migration is particularly useful for load balancing and maintenance tasks.
In summary, hypervisors are fundamental to cloud computing. They enable the efficient use of hardware resources, ensure security through isolation, and support critical operations like live migration. Understanding their role is essential for anyone working with cloud technologies.
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