Corey Quinn, writing on Last Week in AWS: if us-west-2 has an issue, and your plan is to fail over to us-east-1, you should probably be aware that more or less everyone has similar plans. You’ll be in very good, very plentiful company expect provisioning times to be delayed significantly Good point from Corey on this aspect of AWS disaster recovery planning. Of course you aren’t the only one with the same problem at the same time.