EC2 Reserved Instance Availability Zone Problem? No Problem.
You may know that Amazon Web Services Reserved Instances have some gotchas. One of these gotchas is that the availability zone in which the reservation is purchased cannot be changed. So if you need to use an instance in a different availability zone (e.g. if you hit InsufficientCapacity errors*) than your reservation, you’re out of luck - and you end up paying the on-demand price. Today at CloudConnect I chatted with Jeremy Edberg of Reddit and Joe Arnold of Cloudscaling, and we had an insight: there’s a workaround. Read on for more details. ...