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NT's Retirement Opens Windows For Linux: Page 2 of 2

While Linux or even Mac may be an alternative to some firms in some situations -- particularly Linux in single-use situations, such as print- or file servers -- Wilcox also expects many enterprises to essentially ignore Microsoft's nudging to upgrade.

"If a Windows NT Server is doing what's supposed to do, the cheapest thing is to let it be and continue to realize ROI [return on investment] on the original investment," Wilcox wrote. "Even in a straight Windows Server 2003 software upgrade, there are new client-access licenses to consider."

Windows NT 4.0 isn't vanishing overnight, of course, even though Microsoft is ending general support -- including security fixes -- on December 31. Paid custom support plans, for instance, remain available through 2006.

But the retirement of NT leaves Linux with a shot at least, said Wilcox. "A greater risk [of migration to Linux] doesn't equate to a massive move to Linux. But there is greater opportunity for Linux vendors while the transition lingers."