Regretting the decision to go with Azure. Talk about terrible timing. We have media outlets interested in our site, we send info and the site is dead. Talk about a crap first impression.
Yes. The day half the internet seemed to be down. It took Amazon more than 24 hours to recover, and having your services in multiple availability zones did not shield you from the failure.
Yes. It started as a failure in one region, and propagated to others as it overloaded the "control plane" -- the stuff that runs "the cloud", and EBS tried to replicate "failed" disks to the point that Amazon ran out of disk space in the cluster. At the time, I was paying for RDS Multi-AZ which runs your database in multiple availability zones at once with hot failover if the primary goes offline. It failed to fail over despite that. Many large sites went down for a very long time that day, and people couldn't spawn replacement instances even in other AZs than the one the failure started in.
It was one region, multiple availability zones. You're right Multi-AZ != Multi-region (for things like Sandy and natural disasters) BUT they have mostly separate infra which does make multi-az failures very unlikely. Due to its simplicity (with VPC and stuff) some people (perhaps wrongly) treat multi-az like multi-region.
I feel your pain. My startup was featured on TechNet today, I was quoted saying how great Azure worked for us so far... lots of folks were checking us out, and then Azure went down hard, taking our production systems with them. Talk about negative publicity.
