According to IDC's Worldwide Quarterly Server Tracker, factory revenue in the worldwide server market grew 6.3 percent year over year to $13.1 billion in the second quarter of 2007. This is the fifth consecutive quarter of positive revenue growth and the highest Q2 server revenue since the market peaked in 2000. After three years of slowing unit shipments growth, server shipments grew 6.1 percent year over year in 2Q07 driven by an improved refresh cycle and an expansion of new distributed computing workload deployments across the market.

Microsoft Windows server revenue was $5 billion in 2Q07, showing 18.7 percent year-over-year growth and gaining 4 points of revenue market share over 2Q06 and comprising 38.2 percent of all server revenue in the quarter. Windows servers account for the single largest segment of spending, by operating system, in the worldwide server market.

Unix servers experienced a modest 4 percent revenue decline when compared with 2Q06.

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