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Terminal Frequently Asked Questions 1. What is ® Windows NT® Server, Terminal Server Edition, version 4.0?

Terminal Server is a new technology that adds UNIX-like multiuser capabilities and support for , Windows® Based Terminals to Windows NT Server 4.0. With Terminal Server, applications run 100 percent on the server. Terminal Server has three components: the multiuser server core, the Terminal Server client software and the Remote Desktop Protocol (RDP). The multiuser server core provides the ability to host multiple, simultaneous client sessions, and also includes administration tools for managing both the server and the various client sessions. Terminal Server will ship with two types of software clients in the box: one for 32-bit Windows operating systems (Windows NT 4.0, , , Windows NT 3.51), and one for Windows for Workgroups (3.11). These clients will use the Remote Desktop Protocol, a protocol based on the International Telecommunications Union T.120 suite of standard communications protocols. For a basic explanation of T.120, see http://gw.databeam.com/ccts/t120primer.html.

2. What is Citrix’s role in the development and marketing of Terminal Server?

Microsoft licensed Citrix MultiWin (multiuser server core) technology used in the Citrix WinFrame product line in May 1997, and the two companies are working together on the development of Terminal Server.

3. What is MetaFrame?

“MetaFrame” is the for the thin client/server software from Citrix that extends the Terminal Server solution with additional functionality for both the Terminal Server-based server and for clients connected to a Terminal Server-based server. On the server side, MetaFrame contains user, system, and application management functionality such as the ability to load-balance multiple Terminal Servers into a “server farm.” On the client side, MetaFrame provides the ability to connect any client—MS- DOS®, 16-bit Windows, 32-bit Windows, Java-based devices, , UNIX devices, and ICA Windows-based Terminals—to a Terminal Server-based server.

4. My customer already has one or more WinFrame servers from Citrix. Is there an upgrade to Terminal Server/MetaFrame?

Yes. There will be an upgrade discount and technical upgrade path for WinFrame 1.6/1.7 users to Terminal Server/MetaFrame. Technically, the upgrade will preserve the WinFrame configuration information such as users, registry entries, and application settings. Price-wise, the upgrade discount will apply to both server and client access licenses for Terminal Server.

5. How will Terminal Server be priced and packaged? How will MetaFrame be priced and packaged?

Microsoft Windows NT Server, Terminal Server Edition, version 4.0, is an extension of the Windows NT Server product line that delivers the operating system experience through Windows desktop emulation. Terminal Server supports a full range of client desktops including Windows-based terminals, 32-bit and older 16-bit Windows-based personal , and non-Windows-based desktops including Apple , MS-DOS, and UNIX (non- Windows-based devices require a third-party add-on product from Citrix). Desktops connected to the Terminal Server are able to seamlessly access a 32-bit Windows and run 32-bit and 16- bit Windows-based applications that reside on the server. 1. Terminal Server licensing contains three licensing components that must be purchased.

2. Windows NT Server, Terminal Server Edition, version 4.0, is required to host terminal server sessions.

3. Windows NT Server 4.0 Client Access License (CAL) is required to access file and print resources on the Terminal Server.

Windows NT Workstation 4.0 License is required to run a remote Windows NT-based desktop and Windows-based applications. If Windows NT Workstation 4.0 (or greater version number) is already installed or associated with a device, an additional Windows NT Workstation license is not required. Windows NT Workstation licenses must be purchased on a per-seat basis and cannot be used in a per-server or concurrent manner.

6. What is a Windows-based Terminal? Where and when can I get one? How much will a Windows-based Terminal cost?

A Windows-based Terminal is a thin client hardware device that connects to a Terminal Server and allows customers to use Windows-based applications. A Windows-based Terminal runs an embedded RDP or ICA display protocol to communicate with a Terminal server. Windows-based Terminals using RDP will be available from companies such as Wyse, NCD, or Boundless. A Windows-based Terminal, as a thin client device with no local applications processing, has by definition a very small amount of RAM and ROM and may contain a lower-end processor than a typical personal . A Windows- based Terminal does not run a browser locally on the client (as some network computers do); however, it can run a browser like it runs any other Windows-based application—off the server. A Windows-based Terminal could potentially have either the RDP or the ICA client, or both, as well as an embedded 3270 emulator. These options are up to the individual terminal manufacturer. The key criterion that differentiates Windows-based Terminals from a network computer or Net PC is that there is no local downloading of operating systems or applications and no local processing of applications the client. Wyse, Boundless Technologies, and NCD are currently shipping Windows-based Terminals using ICA. These devices work with the current WinFrame product line and will work with Terminal Server/MetaFrame in the future. Additionally, Wyse, Boundless, NCD, Neoware, and Tektronix and others are working with Microsoft to develop Windows-based Terminals that will use RDP. The terminal vendors will set the price for these devices, but it is anticipated many of the basic models will be in the $500 range (without monitor).

7. What is the scalability and performance of a Terminal? Scalability is obviously important in a scenario like Terminal Server in which applications are fully running on the server. Scalability of a Terminal Server will very much depend on the application suite that is being run on the server, the server configuration, and usage intensity. However, a good rule of thumb is that Terminal Server on a single Pro processor server will support about 18-45 concurrent users, depending on user activity. Memory recommendations are 32 MB of base memory plus 4-12 MB per user for the Terminal Server, depending on the type of application and the users' performance requirements. A dual-processor server will support about 30-90 concurrent users. Microsoft will be releasing more detailed scalability and performance information on the Terminal Server Web site, so keep watching for the latest information.