Did you guys first attempt to boot up in another us-east availability zone? They were not all affected as this post seems to imply. I had a slave DB go down but

Did you guys first attempt to boot up in another us-east availability zone? They were not all affected as this post seems to imply. I had a slave DB go down but the rest of our deployment was unaffected (the rest of the deployment is in a different AZ as the slave DB instance but all are in us-east).