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Power

Intel Shows Data Centers Can Get By (Mostly) With Little AC 287

Ted Samson IW writes "InfoWorld reports on an experiment in air economization, aka 'free cooling,' conducted by Intel. For 10 months, the chipmaker had 500 production servers, working at 90 percent utilization, cooled almost exclusively by outside air at a facility in New Mexico. Only when the temperature exceeded 90 degrees Fahrenheit did they crank on some artificial air conditioning. Intel did very little to address air-born contaminants and dust, and nothing at all to deal with fluctuating humidity. The result: a slightly higher failure rate — around 0.6 percent more — among the air-cooled servers compared to those in the company's main datacenter — and a potential savings of $2.87 million per year in a 10MW datacenter using free cooling over traditional cooling."
Operating Systems

Submission + - Making NetBSD Multiboot-Compatible

jmmv writes: "The Multiboot Specification defines a protocol between boot loaders and operating systems' kernels with the basic aim to allow any compliant boot loader to launch any compliant OS. This simplifies the boot loader's tasks by reducing the amount of knowledge it must have of foreign OSes and, as a side effect, it also removes the burden of writing a custom boot loader for each OS. A while ago I modified the NetBSD's kernel to support this specification, which means that the upcoming 4.0 release will be easier to boot on any dual-boot system with Linux installed (assuming it uses GRUB). I've written an article, titled Making NetBSD Multiboot-Compatible, that provides an introduction to The Multiboot Specification and outlines the steps I took to adapt the NetBSD's kernel to follow it. This can give you enough interest and clues to modify your favourite operating system to also support this protocol."

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