dcblogs writes "External forces who work on the customer's data center or supply equipment to it, including manufacturers, vendors, factory representatives, installers, integrators, and other third parties were responsible for 50% to 60% of abnormal incidents reported in a data center, according to Uptime Institute, which has been collecting data since 1994. Over the last three years, Uptime found that 34% of the abnormal incidents in 2009 were attributed to operations staff, followed by 41% in 2010, and 40% last year. Some 5% to 8% of the incidents each year were tied to things like sabotage, outside fires, other tenants in a shared facility. But when an abnormal incident leads to a major outage that causes a data center failure, internal staff gets the majority of blame. 'It's the design, manufacturing, installation processes that leave banana peels behind and the operators who slip and fall on them,' said Hank Seader, managing principal research and education at Uptime."