Advanced display utilities (continued)
Client Access License (CAL)
An application allowing multiple users to share a single operation system requires the standard Microsoft Windows server licenses. In addition to Windows Server Client Access License, Remote Desktop Services Client Access License (RDS CAL) is necessary for each end user or each device to access Windows server. When using Windows Multipoint Server, Windows MultiPoint Server 2011 CAL is also necessary. For details of Microsoft multiple user licenses, see the Microsoft website.
1.When the host computer OS is Windows XP, Windows Vista or Windows 7
For Windows XP, Windows Vista and Windows 7, only a single projector can run the thin client function. While using the desktop of host computer, you cannot use the thin client function on the projector.
2.When the host computer OS is Windows Server 2008 R2
Windows Server requests Client Access License (CAL). To access the host computer from a thin client computer or projector, two types of CAL are necessary: “Windows Server CAL” and “Windows Remote Desktop Service (RDS) CAL”. “Windows Server CAL” offers two types of license system.
User CAL
With User CAL, you purchase CALs according to the number of users regardless of the number of thin client computers or projectors. User CAL is, therefore, recommended in the case that the number of system administrators or operators who operate thin client computers or projectors at multiple sites is smaller than that of the thin client computers or projectors.
Device CAL
With Device CAL, you purchase CALs according to the number of devices accessing to the host, regardless of the number of users who access the host via thin client computer or projector. Therefore Device CAL
is recommended for the case that multiple operators share a thin client computer or projector.
E.g., when six users operate four devices
In the example above, the following licenses are necessary.
•Windows Server CAL (Device CAL) x 4
•Windows RDS CAL x 4
3.When the host computer OS is Windows MultiPoint Server
The concept of Windows MultiPoint Server is basically the same as that of Windows Server 2008 R2. It requires Windows MultiPoint Server CAL instead of Windows RDS CAL. Therefore, Windows Server CAL and Windows MultiPoint Server CAL are necessary for each user or device. When you use the desktop of host computer as one of computer terminals, Windows MultiPoint Server will also request a Windows Server CAL and Windows MultiPoint Server CAL for the desktop of host computer.
(Example 1)
When two users operate four computers or projectors as well as the desktop of host computer
•Windows Server CAL (User CAL) x 2
•Windows MultiPoint Server CAL x 2
(Example 2)
When six users operate four computers or projectors as well as the desktop of host computer
•Windows Server CAL (Device CAL) x 4
•Windows MultiPoint Server CAL x 4
E.g., when two users operate four devices
In the example above, the following licenses are necessary.
•Windows Server CAL (User CAL) x 2
•Windows RDS CAL x 2