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Cringley speculates like hell:
Delta Airlines last night suffered a major power outage at its data center in Atlanta that led to a systemwide shutdown of its computer network, stranding airliners and canceling flights all over the world. You already know that. What you may not know, however, is the likely role in the crisis of IT outsourcing and offshoring.
Do any Soylentils have inside/better information?
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What Happened When Delta Went Down Yesterday?
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The difference between this place and yogurt is that yogurt has a live culture.
(Score: 1, Interesting) by Anonymous Coward on Tuesday August 09 2016, @09:44PM
Transfer switch the thing connects the internal supply (UPS generally) to either the grid or generator. That is what when out, hence "power problem".
Work in Memphis, where we had that problem one day. The transfer switch was located outside of the build on a 6ft "power pole". Conduit ran to grid transformer, generator, and into the building. Was located there so it could be tripped manually by security guards (just in case), with getting access to equipment.
Karma and lightning is bitch. The lightning bolt hit the transfer switch frying it. Generator also cooked. UPS, too. Grid transformer was good, but no way to power the reconnect quickly. The main frames internal dual "UPS" gave it 5 minutes to shutdown before those main primary batteries went dead. 2x 30A 3-phase, to dual 300 pound, top of cabinet mounted. Actually comes with an "engine puller" device to get them up there and take it back down. The main cabinet had dual 500VDC buses (one from each UPS) that each card/planer connected to., each with dual voltage power regulators. Think Googles 48V cabinets were cool.
Hell on main frame, it had dual battery packs (looks like 6 AA) and memory on each disk controller card, just in case to handle failure of the actual card or one memory module. You could pull the memory & battery (keeping the memory "fresh") and plug into another card and continue, keeping the raid-5 fully in sync.