I don't think that thinking about cloud computing in terms of nines is the correct way to frame the issue. cloud storage, maybe, but cloud gives you the cheap b

I don't think that thinking about cloud computing in terms of nines is the correct way to frame the issue. cloud storage, maybe, but cloud gives you the cheap bricks you need to build the nines for your customers using replication, independent zones and clever routing. now I wouldn't go as far as to say outages are the normal state of thing, but cloud trades high nines for cheap redundancy. a raid for compute, if you will, and as such a single zone deployment is going to have outages. (and then there's soft layer which has multiple unplanned sev1 per week)