Facebook refuses to employ virtualisation across its infrastructure because the technology does not scale efficiently, according to a director of the company.
Facebook Labs chief Gio Coglitore said the social network has shied away from abstracting its technology into virtual machines because at large-scale, the economics do not work out and the cost of dealing with hardware failures is too high.
"We find within our testing that a realised [non-virtualised] environment brings efficiencies and the ability to scale much more effectively," Coglitore said. "When we look at the operational realities, we very much would like to lose a server and not have it impact our experience, but as you start to virtualise the importance of that server becomes enhanced and at scale becomes difficult."
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