The Per Device or Per User licensing mode varies from the Per Seat scheme of previous versions of Windows. In this new mode, each device or user that connects to a server requires a CAL, but with that license, the device or user can connect to a number of servers in the enterprise. Per User or Per Device mode is generally the mode of choice for distributed computing environments in which multiple users access multiple servers.
Note The licensing tools and the user interface do not yet distinguish between Windows User or Windows Device CALs. A device CAL is registered indirectly, using license groups.
For example, a developer who uses a laptop and two desktops would require only one Windows User CAL. A fleet of 10 Tablet PCs that are used by 30 shift workers would require only 10 Windows Device CALs.
The total number of CALs equals the number of devices or users, or a mixture thereof, that access servers. CALs can be reassigned under certain, understandable conditions— for example, a Windows User CAL can be reassigned from a permanent employee to a temporary employee while the permanent employee is on leave. A Windows Device CAL can be reassigned to a loaner device while a device is being repaired.
Per Server and Per Device or Per User licensing modes are illustrated in Table 9-1. Table 9-1 CAL Licensing Modes
Per User or Per Device
Traditionally licensed in Per Server mode when there are few servers that require limited access. The number of CALs needed is determined by the number of concurrent connections that are required.
Traditionally licensed in Per User or Per Device mode when there are many servers that require frequent and widespread access.
Usually more economical when the number of CALs needed is determined by the number of users or devices, or both, that require access to the servers.
Tip Windows Server 2003 includes Terminal Services, also known as Remote Desktop. Remote Desktop includes a two (concurrent) connection license for administrators to connect to a remote server. For Terminal Services to perform as an application server, allowing nonadministrative users to connect to hosted applications, you must acquire Terminal Services CALs. Details regarding client licensing can be found at http://www.microsoft.com/ windowsserver2003/howtobuy/licensing/ts2003.mspx.
There are two utilities that will help you track and manage software licensing:
■ Licensing in Control Panel The Control Panel Choose Licensing Mode tool, as shown in Figure 9-10, manages licensing requirements for a single computer running Windows Server 2003. You can use Licensing to add or remove CALs for a server running in per-server mode; to change the licensing mode from Per Server to Per Device or Per User; or to configure licensing replication.
■ Licensing in Administrative Tools The Licensing administrative tool, discussed in the next section, allows you to manage licensing for an enterprise by centralizing the control of licensing and license replication in a site-based model.
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