The main reason why companies should take notice of the study is its transparency, the company claims. While a number of TCO studies have appeared in the past two years, surprisingly few are fully open about the methodologies they use to calculate cost. Others, such as two controversial studies from The Yankee Group and IDC, have been shown to be biased.
CyberSource based its calculations - what it calls a "first-pass quantitative estimate" - on the average computer-usage requirements for an organisation with 250 users over a three-year period. The costing models include expenses such as workstations, servers, networking, IT staff, consultancy fees, Internet service charges, file, mail and print servers, e-commerce servers, SQL and network infrastructure servers, Internet and LAN servers, line-of-business software, desktop productivity applications, external training, printers as well as miscellaneous systems costs.
http://www.techworld.com/opsys/news/index.cfm?NewsID=2808&email http://www.cybersource.com.au/about/linux_vs_windows_tco_comparison.pdf
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