
Section 16 Virtual Client Virtual Client
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A virtual client is defined as a Windows 7 virtual machine. Windows, VMware
Tools, Third party software, and 800xA are installed.
Virtual Client
When considering the dimensioning of a virtual client, two virtual CPUs must be
allocated to the virtual machine. The 800xA workplace when heavily loaded, may
consume one virtual CPU capacity. As there are many other processes in a
Windows computer, it is not desired to have their activity interfere with the virtual
CPU that is supporting the 800xA workplace. Whilst there is no strict definition that
one virtual CPU is allocated to the 800xA workplace and no other task, having an
additional virtual CPU provides an available CPU resource for other processes in
the virtual computer.
Table 7 provides an example of the virtual machine for a virtual client.
Whilst there may be an idea that adding more virtual CPUs may increase
performance, it should be realized that before a virtual machine can be given a slice
of physical CPU resources, VMware ESXi must allocate all of the virtual CPUs to
physical logical processors at the same time. If the virtual machine has a higher
virtual CPU count, and there are more total virtual CPUs running than physical
logical processors, there may be a delay in the virtual machine execution. This could
result in a performance impact. Hence, increasing the number of virtual CPUs in a
virtual machine may not result in a performance improvement.
Table 7. Virtual Machine for a Virtual Client Example
Item Value
OS Window 7
No of vCPU 2
RAM 4 GB
Video RAM 128 MB
Hard Disk 60 GB
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