Terminal Services Terminal Services is the modern equivalent of mainframe computing, in which servers perform most of the processing and clients are relatively simple devices that provide the user interface. Terminal Services works by running applications on a Windows Server 2008 server and enabling desktop computers to operate those applications from a remote location.

Terminal Services Components Terminal Server Remote Desktop Connection Client Remote Desktop Protocol (RDP)

Terminal Services

Remote Desktop Connection

RDC and ActiveX Control By default, Windows Server 2008 Terminal Services includes the downloadable ActiveX control for clients that are not running Remote Desktop Connection 6.0 or later. This includes all computers running Windows operating systems prior to Windows XP SP2, and Windows XP SP2 computers that don’t have RDC 6.0 installed.

Remote Desktop Protocol (RDP)

Planning a Terminal Services Deployment Security Licensing Local resources Memory management

Advantages of Terminal Services Reduced client hardware requirements. Simplified application deployment. Easy configuration and updates. Low network bandwidth consumption. Support for thin clients. Conservation of licenses. Power savings. No client backups. Remote control help and training.

Terminal Services Keep in mind that while Terminal Services might save money on desktop hardware, you might have to upgrade your servers (or purchase additional ones) to support the Terminal Services traffic, and you will certainly have to purchase Terminal Services client access licenses (TS CALs) for your users or devices.

Terminal Services Hardware The selection of appropriate hardware for a terminal server should be based on the following factors: –Number of users connected to the server at any one time. –Applications users need. –Number of users who access each application. –Using RemoteApp vs complete remote desktops.

RemoteApp RemoteApp is a new Terminal Services feature that enables clients to run terminal server applications within individual windows. The windows are resizable. They have standard system menu and title bar buttons, and they are not constrained by a Terminal Services desktop. A RemoteApp window is, in most cases, indistinguishable from a window containing a local application.

RemoteApp When two different client computers launch RemoteApp applications using the same terminal server, the server creates two separate sessions, each with its own virtualized environment. However, when a single client computer launches two RemoteApp applications on the same terminal server, the server uses one session for both applications. Therefore, it is possible for a fault in one application to affect the performance of the other.

Terminal Server Licensing A Terminal Services deployment needs only one TS Licensing server for the entire installation regardless of the number of terminal servers on your network. The process of installing a TS Licensing server and preparing it for use consists of the following basic steps: –Install the TS Licensing role service. –Activate the TS Licensing server. –Install the TS CALs on the TS Licensing server. –Configure the licensing settings on the terminal servers.

Terminal Services Licensing Mode

Hyper-V Architecture

Windows Server 2008 and Hyper-V

Hyper-V Manager Console

Settings Configuration Interface for Hyper-V Virtual Machine

Summary Terminal Services works by running applications on a Windows Server 2008 server and enabling desktop computers to operate those applications from a remote location.

Summary To make the desktop or application appear on the client computer, the server transmits data and instructions that enable the client to render the graphical interface on its display. In return, to manipulate the applications running on the server, the client program transmits the user’s keystrokes and mouse movements.

Summary Terminal Services implements the server, client, and protocol elements with the following three components: Terminal Server, Remote Desktop Connection client, and Remote Desktop Protocol (RDP).

Summary Clients connecting to a Windows Server 2008 terminal server must have client access licenses, in addition to any licenses needed for their operating system and applications. Terminal Services provides a 120-day grace period during which licenses are not necessary.

Summary RemoteApp is a new Terminal Services feature that enables clients to run terminal server applications within individual windows. The windows are resizable; they have standard taskbar buttons, and they are not constrained by a Terminal Services desktop.

Summary A virtual server is a complete installation of an operating system that runs in a software environment emulating a physical computer. Applications such as Microsoft Virtual Server 2005 and the Windows Server virtualization technology in Windows Server 2008 make it possible for a single computer to host multiple virtual machines, each of which runs in a completely independent environment.

Summary Hyper-V is a new server role that provides hypervisor-based virtualization on 64-bit Windows Server 2008 computers. This enables the administrator to create multiple virtual machines on a single physical computer, each of which runs a separate operating system. You can virtualize individual applications, as well as operating systems, by using Terminal Services RemoteApp or Microsoft SoftGrid Application Virtualization.