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DC power directly to computers.
NASA scrambles for May shuttle launch.
Apple patches OS X security bugs.
DC power directly to computers.
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"It keeps the units considerably cooler within the chassis themselves and saves us somewhere between 10 and 20 percent over the AC-powered alternative," in terms of electrical costs, said Charles Taylor, a senior systems engineer at the University of Florida. Taylor installed an $840,000 cluster of 200 Rackable servers as a mini-supercomputer at the university in October. By using the DC-powered cooler servers, Taylor said he sidestepped a problem with insufficient air conditioning. "We didn't have the cooling capacity to house the cluster we thought we were going to be putting in there," he said.
NASA scrambles for May shuttle launch.
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NASA is working towards a tentative 10 May launch date for its next shuttle flight, mission managers say. But so much work remains to be done to verify that the vehicle is safe to fly that any delays will mean the shuttle will miss its May launch window entirely, and will have to wait until at least July.
Apple patches OS X security bugs.
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The Apple security update addresses those flaws, which affect the Safari Web browser and Apple Mail client. The vulnerabilities expose Mac users to risks that are more familiar to Windows owners: the installation of malicious code through a bad Web site or e-mail because of improper validation of downloads.