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Distributed Computing

Also known as Peer-to-Peer (P2P). This environment is an ad-hoc network that is generally grown

from a small group of independent computers that need to share files, resources such as printers and

network/internet connections. These have allowed small business to improve some forms of

productivity. If all is to run smoothly, this model usually needs internal technical skills, or access to

outsourced technical support.

DC Advantages

• Each user has control of their own equipment, to a reasonable degree.

• Each user can add their own programs at their own leisure.

• Sometimes cheaper up front capital cost.

DC Disadvantages

• Typical lifespan of 3 years (maybe stretch to 5 with questionable results).

• Many moving parts (fans, hard drives) which are susceptible to failure.

• Larger vulnerability to security threats (both internal & external).

• Usually has higher cost of ownership, when measured over 3 + years.

Centralized Computing

Centralized Computing takes some of the control and all of the parts easily susceptible to failure away

from the desktop appliance. All computing power, processing, program installations, back-ups and file

structures are done on the Terminal or Application Server.

CC Advantages

• Centralized Computing and file storage.

• Redundant technologies incorporated to ensure reduced downtime.

• Computer stations replaced with ThinClient appliances with no moving parts, improving

meantime before failure.

• Centralized management of all users, processes, applications, back-ups and securities.

• Usually has lower cost of ownership, when measured over 3 + years.

CC Disadvantages

• User access to soft media drives are removed.

• In the rare event of a network failure, the ThinClient Terminal may lose access to the terminal

server. If this happens, there are still means to use some resources from the local client.

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12y ago

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