The group has scheduled two more open houses at the site for Aug. The proof-of-concept has been running since June, and has hosted several open houses, giving businesses and technology providers alike a look at the advantages of DC power, Tschudi said. “Our goal was to show that you could really do this with commonly available products,” said Tschudi, in Berkeley, Calif. The findings backed up the researchers expectations, said project leader William Tschudi. The program measured energy efficiency at both the facility and rack levels. The proof-of-concept program, set up at Sun Microsystems Newark, Calif., facility, offered a side-by-side comparison of a traditional AC power system and a 380-volt DC distribution system, running on both Intel-based servers and Sun systems. Engineers at the Lawrence Berkeley National Laboratory and about 20 technology vendors this month will wrap up a demonstration that they said shows DC power distribution in the data center can save up to 15 percent or more on energy consumption and cost.
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