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Branch office

WAN link
Application housed on
satellite office server

Branch office
WAN link Company
Headquarters
Application housed on
headquarters server

WAN link

User needing access to Branch office
off-site application

A user at a satellite office
can access applications
stored on virtualized
servers at the company’s
headquarters, or even at
another branch office.
Application housed on
satellite office server
FIGURE 12-1 Workers can access an application across a WAN link from a satellite office on a server
located at the company’s headquarters, or even at another satellite office.

Best Practices PART V
Of course, not everything can be virtualized, so there may still be some servers in your
organization that are dedicated to sole tasks. However, those that can be consolidated
should be.
Virtualization is ideal for applications that are used on a small or medium scale. It’s your
high-performance applications that need one or more clustered servers to get their jobs done.
Let’s consider a 12GHz server (a four-core device with 3GHz per core). We can divide it
into 16 virtual servers, each with 750MHz of processing power. This is illustrated in
Figure 12-2.