If this is any indication, from WiKipedia....
"At approximately 6:30pm (CDT) on 31 May 2008, an electrical transformer in the equipment room at the "H1" data center in Houston short circuited, causing a fire and explosion which resulted in extensive damage to the equipment room. All remaining power to the facility was shut down on orders from the local fire department. The incident resulted in approximately 9,000 servers being taken off line. Most of the 7,500 affected customers services were restored by 2 June 2008, however servers located in the ground level "Phase One" of the datacenter were not brought online until 5 June 2008. There has been severe damage to some customers hard drives as a result of the power loss in the H1 data center."