A Wells Fargo data center outbreak in Minnesota appeared to have rendered the San Francisco-based bank's mobile app and site unusable for its customers across the United States on Thursday.
The exact cause of the outbreak is unclear. From the end of the afternoon Pacific Time Thursday, the bank did not publish details other than an excuse on its website and on Twitter for "system failures due to power outage at one of our facilities launched after smoke was discovered after routine maintenance. "
It is unclear why smoke was discovered and whether there was any smoke at first. The fire chief of Lake Johanna, Minnesota, told CNBC that a fire fighting system at a Wells Fargo data center was activated by an unfortunate Thursday morning.
Tim Boehlke, the fire chief, said the incident started at. 5 about local time. Fourteen hours later, Wells Fargo has not released an update.
A Wells Fargo spokeswoman did not respond to a request for comments well in advance of publication.
Wells Fargo, like several banks, has a larger data center. Companies usually have failover schemes in place, where a backup data center takes over when a primary decline goes down. However, these failover schemes sometimes fail.