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The following image shows an example U170 installation configured for 10 users:
Of course, as with any PC, the performance for each user depends upon the host configuration
and application needs of the users. Specifically, performance is dependent upon the individual
host hardware, memory, CPU, applications being used, operating system and other factors.
There is almost no discernable difference between virtual and real desktop environments as long
as the two key resources of processor utilization and memory use do not exceed 100%. As long
as these two key parameters are appropriately sized for the application, the performance for each
U170 user should be comparable to that of the host PC.
U170 10-User Environment
In our 10-user example configuration, we used an off the shelf Gateway DX-4822-03
2
that sold
for $789. We connected nine U170 devices, ten LCD monitors, and Windows Server 2003
Standard Edition as the OS. There are not enough USB ports on this PC for 9 U170 devices. We
divided the nine devices into two groups. Five U170 devices are connected to a D-Link seven-
port powered hub and four U170 devices are connected to a D-Link four-port powered hub.
Since this PC has two USB buses, we connect the seven-port hub to the back of the PC and the
five-port hub to the front of the PC to maximize the USB bandwidth. Each hub is connected with
a 5-meter long USB cable.
