VMware VIEW COMPOSER 2.5 - ARCHITECTURE PLANNING EN-000350-01 Specifications download pdf (Page 30)

Estimating Memory Requirements for Virtual Desktops on page 31

RAM costs more for servers than it does for PCs. Because the cost of RAM is a high percentage of overall

server hardware costs and total storage capacity needed, determining the correct memory allocation is

crucial to planning your desktop deployment.

Estimating CPU Requirements for Virtual Desktops on page 33

When estimating CPU, you must gather information about the average CPU utilization for various types

of workers in your enterprise. In addition, calculate that another 10 to 25 percent of processing power is

required for virtualization overhead and peak periods of usage.

Choosing the Appropriate System Disk Size on page 33

When allocating disk space, provide only enough space for the operating system, applications, and

additional content that users might install or generate. Usually this amount is smaller than the size of

the disk that is included on a physical PC.

Planning Based on Types of Workers

For many configuration elements, including RAM, CPU, and storage sizing, requirements depend largely on

the type of worker who uses the virtual desktop and on the applications that must be installed.

For architecture planning, workers can be categorized into several types.

Task workers

Task workers and administrative workers perform repetitive tasks within a

small set of applications, usually at a stationary computer. The applications are

usually not as CPU- and memory-intensive as those used by knowledge

workers. Task workers who work specific shifts might all log in to their virtual

desktops at the same time. Task workers include call center analysts, retail

employees, warehouse workers, and so on.

Knowledge workers

Knowledge workers' daily tasks include accessing the Internet, using email,

and creating complex documents, presentations, and spreadsheets. Knowledge

workers include accountants, sales managers, marketing research analysts, and

so on.

Power users

Power users include application developers and people who use graphics-

intensive applications.

Employees who use

desktops in local mode

only

These users download and run their View desktops only on their local systems,

which reduces datacenter costs associated with bandwidth, memory, and CPU

resources. Scheduled replications ensure that systems and data are backed up.

Administrators configure how often end users' systems must contact

View Manager to avoid being locked out.

Kiosk users

These users need to share a desktop that is placed in a public place. Examples

of kiosk users include students using a shared computer in a classroom, nurses

at nursing stations, and computers used for job placement and recruiting. These

desktops require automatic login. Authentication can be done through certain

applications if necessary.

VMware View Architecture Planning Guide

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