EMC's Billion-Dollar IPO

The IT company's plan to sell shares in its VMware subsidiary highlights surging demand for ways to make more efficient use of computing power

So much computing power, so little of it used efficiently. That's the plight facing many corporations, their data centers jam-packed with energy-sapping servers that run corporate networks and Web sites. The good news is that a handful of companies, including EMC subsidiary VMware, are practiced at the art of better harnessing all that computing power—and cutting soaring energy bills.

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