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Reports are that some sort of environmental failure has virtually halted all technology resources at Wells Fargo. No ATM service, no consumer website, various other services fully down as well.

Once upon a time, Wells Fargo ate a bunch of smaller companies. Two of them were once major bank chains headquartered in Florida, each with its own mainframe(s) and data center.

And to my shame, I was working back around the turn of the century for a department that helped them do the eating - we provided mortgage portfolio valuation services that were used to make merger and acquisition decisions for not only Wells Fargo, but virtually every other major bank. So no only do I share in the blame for "too big to fail", but the trigger for The Great Recession itself was in large part based on mortgage portfolio valuations that ran off the rails.

So, Wells Fargo consolidated all those other data centers and apparently runs just one major one out of Charlotte, since we now have a single failure point, and it isn't the Cloud, because when Amazon's data centers go out, multiple companies get hit.

This is the price of efficiency. You may save a lot on elimination of redundancies, but when you're always running near 100%, a single pebble can cause an avalanche.
 
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