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What is a Virtual Server?

Virtual Server Consolidation

A Virtual Server is a server that shares computer resources with other virtual servers. In this context, the virtual part simply means that it is not a dedicated server -- that is, the entire computer is not dedicated to running that individual server's software.

Virtual Servers are a very popular way of providing cost effective hosting services. Instead of requiring a separate physical computer for each server, dozens of virtual servers can co-reside on the same physical computer. In most cases, performance is not affected and each virtual server behaves as if it is being served by it's own dedicated physical server. However, if too many virtual servers reside on the same physical computer, or if one virtual server is allowed to hog resources, the other virtual servers on the same physical server could operate more slowly.

To ensure performance on the DC2 Platform, every Virtual Server or Virtual Data Centre is restricted to a maximum amount of resources to ensure that no individual Virtual Server or Virtual Data Centre can hog more resources than they are allowed.

The below diagram shows you the logical difference between a traditional Physical Server deployment and Virtual Server architecture with the VMware layer installed between the physical computer and the Operating System (OS) and Application (Apps) layer. VMware controls, shares and allocates the physical resources amongst all of the Virtual Servers and ensures that they all work together properly.

Traditional Versus Virtual