Quote:
Originally Posted by ikalugin
One must account for the slim possiblity that redundant power sources went out at the same time because even with extensive redundancies you dont get 100 percent availiability.
|
Very doubtfull, as the consequence would have been that both datacenters connected powergrids would have failed. Datacenters have redudancy by connecting to 2 powergrids (at least), so min. 4 powergrids that have homes, other businesses etc would have been down. If that was the case I think it would have made major news
Datacenters and high availability systems have redundans built-in on many levels. Its not very uncommon that redundans is activated on storage, network or other levels. It takes a disastor to impact power on datacenters to the point where both fails.
Back in the day when I was involved in Disastor tests we joked with the scenario of both datacenters failing, because if that was the case pur country would be in a disastor situation