szervervirtualizáció

Server virtualization, or szervervirtualizáció in Hungarian, is a technology that allows multiple operating systems and their applications to run on a single physical server. This is achieved by creating virtual instances of a server, known as virtual machines (VMs). Each VM operates independently, with its own CPU, memory, storage, and network resources, all of which are allocated from the physical server's resources.

The core component enabling server virtualization is a hypervisor, also referred to as a Virtual Machine Monitor (VMM). The hypervisor acts as an intermediary layer between the virtual machines and the underlying physical hardware. It manages and allocates the physical resources, ensuring that each VM receives the necessary components to function without interfering with other VMs. There are two main types of hypervisors: Type 1 (bare-metal) hypervisors run directly on the server hardware, while Type 2 (hosted) hypervisors run on top of an existing operating system.

The benefits of server virtualization are numerous. It significantly improves hardware utilization, as a single physical server can host many VMs, reducing the need for multiple underutilized machines. This leads to cost savings in terms of hardware acquisition, power consumption, cooling, and data center space. Virtualization also enhances flexibility and agility, allowing for rapid deployment of new servers, easier migration of workloads, and simplified disaster recovery solutions. Furthermore, it improves resource management and scalability, enabling administrators to easily adjust resources allocated to VMs as needed.