Desktop virtualization is a technology that “separates a personal computer (PC) desktop environment from a physical machine using a client-server model of computing. The model stores the resulting “virtualized” desktop on a remote central server, instead of on the local storage of a remote client. Thus, when users work from their remote desktop client, all of the programs, applications, processes, and data used are kept and run centrally. This scenario allows users to access their desktops on any capable device, such as a traditional desktop PC, notebook PC, or even on different devices like netbooks, smartphones, or thin clients.
This diagram shows the VMware vSphere & View 4.5 Virtual Desktop Model:
Why virtualize your desktops?
1. Make the user experience more consistent for remote or mobile users,
regardless of geographic location or the type of device accessing
2. Improve overall Security – Keep control of desktops and user data
through locked-down virtual machines. Protect Company resources from
data leakage and various threats. Hardware that has viruses and spyware
can be rebuilt instead of cleaned. Systems can be maintained safely in
an offline mode for forensic investigations or to preserve evidence
3. Increase system Availability – Virtual desktops can be quickly provisioned,
and offline copies of desktops can be kept current and backed up for
quick recovery in a disaster. Further, virtual desktop systems can take
advantage of the high availability functions that come with server
4. Improve desktop Recovery – Build Windows desktop systems that run
on various hardware/operating systems, including “thin clients,” Linux
systems, Mac PCs, tablets, and even smartphones. Desktop recovery
can be made much faster by reducing hardware setup time. IT staff
can repair or replace desktops on the fly, thus improving user uptime.
5. Reduce IT administrative costs by reducing time spent visiting branches
to deploy desktop hardware. VMware provides better management tools to
support users across the Bank network.
• In estimation, companies can spend $3 managing desktops for
every $1 spent on desktop hardware.
• Virtual desktop technology can help reduce TCO.
6. Virtual desktop systems can be patched or updated with new OS
or application software en masse. And, when discovering a problem
with the new OS or desktop environment, users can be quickly
rolled back (individually or in groups) to the previous version
of the desktop.
7. Save money by extending the useful life of existing hardware or
reducing capital expenditures by purchasing less expensive hardware.
Since the server is providing the processing, Virtual desktop machines
require less processing capacity.