Question: Server farms such as google and yahoo provide enough compute capacity for the highest request rate of the day. Imagine most of the time these

Server farms such as google and yahoo provide enough compute capacity for the highest request rate of the day. Imagine most of the time these servers operate at only 60% capacity. Assume further that the power does not scale linearly with the load; that is when the servers are operating at 60% capacity, they consume 90% of maximum power. The servers could be turned off, but they would take too long to restart in response to more load. A new system has been proposed that allows for a quick restart but requires 20% of the maximum power while in this "barely alive" state

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