Digital Service Efciency (DSE) helps eBay to see the full cost, business impact, power ef- ciency (PUE), and environmental impact of customer buy and sell transactions. The dash- board combines PUE with other DSE measures of data center performance. Today, many data centers use both PUE and DSE.
eBay operates one of the largest data center networks in the world, and it has begun to shift from air to water for its data center cooling needs using a new cooling technology from Dell called Triton. In large data centers, temperatures can reach 120 degrees in just two minutes if the cooling system became disabled. At this temperature, processors and hard drives begin to malfunction. The traditional method of using air cooling has become increasingly expensive as data centers continue to grow. eBay has begun reconfguring its server cooling from air to liquid cooling using water which is a more expensive, but also a far more efec- tive process for removing heat. The company already boasts some of the best power usage efectiveness (PUE) ratings in the industry.
VIDEO CASE QUESTIONS
1. Why does Facebooks data center specialist argue that The Internet is not a cloud?
2. What are some of the techniques Facebook uses to cool its data centers?
3. Describe the fve methods recommended by Google for reducing power consump- tion.
4. Based on the Google video, how much of the worlds global greenhouse gases are the result of computing?
5. What are some of the benefts of using Dells Triton water cooling technology?
