수십만 대의 서버를 운영하는 구글(Google)의 가장 큰 고민은 전기료이다. 전력문제는 비단 구글뿐 아니라 대부분의 데이터센터가 겪고 있는 심각한 문제이다. 데이터센터의 전력비용은 전체 운영비의 가장 큰 부분을 차지하고 있다. 여기에서 전력전달효율, 냉각효율 및 서버 컴포넌트들의 전력효율에 이르기까지 여러 요소가 복합적인 원인에 의해서 낭비되는 전력이 많다. 따라서 현재, 데이터센터 냉각 시스템, 서버 플랫폼, 컴포넌트에 이르기까지 다양한 저전력 설계기법이 연구되고 있다. 특히 서버 전력과 발열의 가장 큰 부분을 차지하는 프로세서의 기술은 다중 코어 기술로 빠르게 발전하며 전력 소모량 대비 성능이 쟁점이 되고 있다. 본 고는 서버 플랫폼 관점에서 전력소모 분석과 전력절감기술의 동향을 다루고 있다.
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