What is the server virtualization?

was a time when the organization looking for web hosting had to choose between a shared server and a dedicated server. This could be a difficult choice, because while Desicate Hosting offered a server that had access to only one organization - to ensure memory, bandwidth and complete control - it can be extremely expensive. On the other hand, the shared server usually meant sharing memory sources and bandwidth and IP address. If someone else on the server proved to be a pig pig or flooded the Internet by spam, it could find it without the guilt of their own, because the ISP focused on the spammer, which shares the lawn. The server virtualization uses software to make one server as if it is a number of separate servers, which solved the problem.

Virtualization

server, also known as a virtual dedicated server (VDS) or virtual private server (VPS), is cheana than a dedicated server and solves ProblenkOmy sharing a shared server's resources by setting up resources for each subscriber and allows each virtual server to run completely separately from others, if required, even running separate operating systems. Server virtualization also has applications within organizations as it can allow tasks and processes that are not compatible to be completely operated on the same server without interaction or overlapping, making the server use more efficient. Another advantage of virtual servers is to allow redundancy in one piece of hardware. The second virtual server could contain the application sample and/or the same data that is used as a backup in case of failure.

server virtualization can be done in three different ways. The first is referred to as full virtualization or model of virtual computer; second as paravirtualization or model of the paravirtual machine (PVM); And the third is called virtualized at the level of Osation or virtualization at the OS level (operating system). VirtualThe machines require hypervisor software that acts as a platform for virtual server operating systems, keeps them separate and independent, which requires a lot of performance. The PVM model allows virtual servers to be aware of and coordinate the use of resources. There is only one host operating system with a server virtualization at the OS level and the virtual servers are guests, which means that everyone must be separate and lowered on the same operating system, but allows the system to be more efficient.