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Total Cost of Ownership: Principles and Practical Applications

"Cheap" computer technology ain't necessarily cheap. When evaluating what something will cost to purchase, are you giving any thought to the total cost of owning it? What will it cost you to use it? Maintain it? Repair it? Upgrade it? Will end users adopt it? Will they spend all of their valuable working time playing with it? Fighting with it? Complaining about it?
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The total cost of ownership (TCO) of a computing system is defined as the total cost for acquiring, activating, and keeping that system running. It's an accounting methodology that today is proving to be crucial in making sound IT decisions.

Many IT professionals conveniently factor in only the costs of purchasing hardware and software when doing TCO analysis. This isn't surprising; when pressed for time, they only take into account what's easy to find out. In the relatively easy-to-manage world of mainframes and big centralized computing systems, hardware and software accounted for much of the cost factors. In the current era of e-business, client/server, and peer-to-peer systems, however, the costs of managing and maintaining computer systems is often much higher and cannot be ignored.

What should go into the computation of the TCO of any system? We can group these costs into direct and indirect costs.

  • Direct costs pertain to the acquisition expenses or the cost of buying the system, and cover all of the following activities:

    • Researching possible products to buy, which is essentially a labor cost but may also include materials cost, such as purchase of third-party research reports or consultant fees.

    • Designing the system and all the necessary components to ensure that they work well together. Naturally, this cost component will be higher if a move to a totally different system platform is being considered.

    • Sourcing the products, which means getting the best possible deal from all possible vendors through solicited bids or market research. It's often sufficient to get a quotation from three vendors (with the cheapest one not necessarily being the best choice). With the Internet, it's even easy to get price quotations from sources outside the country, to get a good spectrum of pricing options.

    • Purchasing the product(s), which includes the selling price of the hardware, software, and other materials as negotiated with the chosen suppliers. Include all applicable taxes that might be incurred. Don't forget to consider the costs of the systems at the end-user side; some system choices might entail a change or upgrade at that end.

    • Delivering the system, which includes any shipping or transportation charges that might be incurred to get the product into its final installation location.

    • Installing the system. Bear in mind that installation also incurs costs in utilities and other environmentals—not just labor costs. If the installation of the system will result in downtime for an existing system, relevant outage costs must be included. Any lost end-user productivity hours during this activity should also be factored in.

    • Developing or customizing the application(s) to be used.

    • Training users on the new system.

    • Deploying the system, including transitioning existing business processes and complete integration with other existing computing resources and applications. Include here the costs to promote the use of the new system among end users.

  • Indirect costs address the issues of maintaining availability of the system to end users and keeping the system running, which includes the following:

    • Operations management, including every aspect of maintaining normal operations, such as activation and shutdown, job control, output management, and backup and recovery.

    • Systems management, such as problem management, change management, performance management, and other areas.

    • Maintenance of hardware and software components, including preventive maintenance, corrective maintenance, and general housekeeping.

    • Ongoing license fees, especially for software and applications.

    • Upgrade costs over time that may be required.

    • User support, including ongoing training, help desk facilities, and problem-resolution costs. Remember to include any costs to get assistance from third-parties, such as maintenance agreements and other service subscriptions.

    • Environmental factors affecting the system's external requirements for proper operation, such as air conditioning, power supply, housing, and floor space.

    • Other factors that don't fall into any of the above categories, depending on the type of system deployed and the prevailing circumstances.

All these cost factors seem fairly obvious, but quantifying each cost is difficult or impractical in today's world, because few organizations have an accounting practice that's mature enough to identify and break down all these types of expenses in sufficient detail. For example, very few organizations record all employee activities by task and hours used—information you would need to answer questions like these: What support costs did you incur last month? How much time did each user spend in solving computer-related problems? How much work was lost due to downtime on desktop PCs?

Additionally, companies rarely have accurate inventory and asset information regarding their computing systems, especially in large, multi-location computing environments where PC, server, and local network purchasing decisions are often handled at the department level.

So, what's the value of knowing a system's TCO? Obviously, our objective is not to calculate exact figures. Rather, you need to understand what these costs could reasonably be in your organization. You must plan for these costs, even if you can only roughly estimate them. A fair amount of intelligent "guesstimation" is much better than blindly deciding on an IT solution on the basis of sticker price alone. In addition, TCO analysis provides a good basis of comparison between alternative system-deployment strategies, between platform choices, and between competing products.

Industry TCO Estimates

When IT and user labor costs are factored in, industry consultants have estimated the TCO of typical office PC systems from as low as $3,000 to as high as $10,000 per unit, per year. Note that typical PC hardware and software prices range from a low of $700 to a high of $2,000 for desktop units.

An example of how TCO can help in making a decision on system migration is a recent analysis by the Gartner Group that estimates the migration costs per PC system going from a Windows 98 to a Windows 2000 platform to be anywhere from $2,000 to $3,000. The same sort of analysis by Giga Group—but quantifying the labor savings gained—puts the cost of migration at $973 per system. In Giga Group's approach, they tried to quantify the gain in user productivity hours from the use of the much more stable Windows 2000 operating system.

Although all analyst's TCO estimates vary considerably, they all point to the fact that

  • TCO results will be very different for every organization, given their varied computing environment, user experience level, and IT expertise.

  • PC systems have much higher indirect costs than direct costs.

  • TCO analysis is never going to be an exact science, due to the many assumptions and unknowns that have to be taken into account.

  • As you provide more functionality and capability to end users, TCO rises. As you install more software or provide more complex hardware at the hands of end users, you pay increasingly more for support and maintenance.

TCO provides a good model for evaluating computing costs—direct and indirect, visible and invisible, budgeted and unbudgeted. Of course, TCO cannot be your sole determining factor for choosing a computing system. What I'm driving at here is that you should be aware of these costs and plan for them.

At the same time however, you must always balance the costs of providing a system versus the benefits it brings to the business and the end users. Many decisions you make will not be due to cost-avoidance but rather on the basis of business advantage. Case in point is having Internet connectivity. On one hand, providing such a facility for the enterprise means additional investments in firewalls and other security products, as well as a dramatic rise in potential damage from hackers, viruses, and other malicious activities. But on the other hand, what business can adequately compete or even survive without the access to information, worldwide reach, and accessibility to customers that the Internet provides?

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