It's a lot, but it could have been worse.
Renesys concludes that about 10 percent of the networks in the New York metropolitan area went down, which is really low given the fact that the local electric company, ConEdison, actually cut power to the lower portions of Manhattan, where a lot of those networks are based.
It also says something good about the planning of those whose networks stayed up and running, and those who keep the backup generators running and who aren’t getting much sleep.
Even so, in the grander scheme of things, it’s still a lot: Renesys compares the impact of the networks that went down to that of an entire country the size of Austria going down. It is something we’ve seen before. Case in point: Egypt....
[Food for thought for crisis managers ~ Jeff]