Virtualization: Overview of Exchange Server

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To run a network application, a remote-server requires an Exchange Server. One of the fundamental types of Exchange Server is the hybrid environment that provides users with both inbound and outbound email. An Exchange Hybrid environment uses virtualization to provide this functionality.

An Exchange Hybrid environment consists of two main components: a virtualization infrastructure, which uses supervisors to provide an application platform and an Exchange Server. Hypervisors are virtual machines that reside on the Exchange Server or virtualized. The supervisor provides the capability to run the virtualized application.

The virtualization architecture is composed of several components. It includes hardware virtualization of the servers to provide cost-effective in-system virtualization of workloads. This feature provides increased performance at minimal cost. As an administrator, you can define the type of hardware used for a virtualization environment.

The physical server may have three or more different virtual servers, which are nested inside each other. The nested virtual servers offer more flexibility than the one-virtual server.

Hypervisors also provide the platform software that helps to manage the virtualization environment and to remotely control virtualized servers. A virtualized server can be managed in a hosted environment as well as a physical server environment.

The supervisor manages storage for the virtualized server and provides the platform software that allows clients to access this storage. The platform software can also be used to manage inbound and outbound email.

A virtual server can be defined to be a sub-tier of the main Exchange Server. In fact, there are three types of virtual server that are used by users: server, email and client. For the different types of user, the virtual server is defined depending on the user requirement.

Server is a physical server that is defined to be the server of the Exchange Server. It is the server that hosts the virtual servers and hence they share a single storage for storing messages.

Email is defined as a virtual mail system that has the capability to store emails. This type of virtual mail system is deployed as a sub-tier of the main Exchange Server.

Client is a mail server that has a separate storage for storing messages. It is deployed as a top-level server. All these servers and their corresponding virtual machines are referred to as servers in the Exchange Hybrid.

By using virtualization, you can run several virtual servers as well as Exchange servers. The logical isolation of the virtual machines allows users to view and process messages from any part of the virtualization environment. You can also use different virtual mailboxes for different types of users so that they can be more easily identified by user management tools.

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