Microsoft Windows NT 4.0 Guide Manual do Utilizador descarregar pdf (Página 5)

Applications Compatibility Scripts for Windows NT Server, Terminal

Server Edition

Microsoft® Windows NT® Server 4.0, Terminal Server Edition, is a new technology

that gives the Windows NT Server operating system the capability to serve 32-bit

Windows® operating system-based applications to terminals and terminal emulators

running on personal computer and other computer desktops. The Terminal Server

environment is, by definition, a thin client, 100 percent server-centric architecture.

Because Terminal Server terminal em ulator clients will be available for many

different desktop platforms (Macintosh, UNIX, and others), Terminal Server

provides access to 32-bit Windows-based applications from virtually any desktop.

Terminal Server allows you to roll out 32-bit Windows-based applications to a

heterogeneous set of desktops while transitioning to a pure 32-bit desktop

environment.

Unlike the traditional client/server environment, an application runs only on the

server in the Terminal Server environment. The Terminal Server client performs no

local processing of applications. The Terminal Server operating system transmits

only the application presentation—the Graphical User Interface, or GUI—down to

the client. Each user logs on and perceives only his or her session, which is

transparently managed by the server operating system and is independent from any

other client session.

From an application usage perspective, one of the biggest benefits of Terminal

Server is that the majority of existing 16- or 32-bit application programs run "as is"—

no programming changes are required to run them on a Terminal Server. This does

not, however, mean that all existing applic ations run equally well under Terminal

Server. As with the addition of any new operating system technology, understanding

how to design applications that take advantage of these new capabilities is

important. It’s also important to understand how this new service can magnify the

negative results of bad programming habits, and to point out specific areas to watch

for.

Note that following these guidelines does not limit or compromise an appl ication's

ability to function in the traditional client/server Windows NT environment—Terminal

Server-optimized applications work well in both enviro nments.

Terminal Server Extends the Multi-user Capabilities of

Windows NT Server

In addition to providing a means to serve Windows-based applications to te rminals

and other thin client devices, Terminal Server extends the current multi-user

capacity of Windows NT Server. Of course, Windows NT Server is inherently multi-

user-capable in the following ways:

• User profiles stored on the server can be used to allow numerous users to see

many desktops and run various applications when they log on.

• A sophisticated security system controls the capabilities and access rights of

both local and remote client users.

• Operating system interfaces allow concurrent users to safely access common

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