No customers were affected by a fire that broke out in an electrical room at a Terremark data center in Culpeper, Va., early on April 30.

Terremark spokesman Xavier Gonzalez said electrical failover systems were activated and there were no interruptions in power supply to the computer rooms.

"Our redundant power systems worked and kicked in properly," he said, explaining that one of the data centers on the company's NAP of the Capital Region campus was switched to generator power.

"Everything continued to work properly there."

The fire was caused by an electrical fault in a medium-voltage room, something Gonzales said was a relatively common occurrence in data centers.

The fire damaged one electrical-gear cabinet before it was extinguished by members of the Terremark team together with the local fire department.

Firemen were dispatched on site after a fire alarm was activated around 12:30 a.m. EDT and employees at the data center confirmed that there was a fire.

According to Gonzalez, it was extinguished fairly quickly.

"At the end of the day, the design of the facility and the redundant power systems worked properly," the spokesman said.

"That's a good sign for us."

There are currently two active 50,000 square foot data centers at NAP of the Capital Region, a campus that has room for a total of five such facilities.

Terremark began construction of the third facility in April.