AWS Allowing Limited Modification of Reserved Instances

Amazon announced last week it is letting customers modify their Reserved Instances in a limited capacity.

AWS said it's letting customers move their Reserved Instances between Availability Zones as long as the instances remain in the same region. Customers with accounts enabled for EC2-Classic can also move their Reserved Instances between EC2-Classic and EC2-VPC, explained AWS evangelist Jeff Barr on the AWS Blog.

"You can now make adjustments to your Reserved Instances as your needs and your architecture change," Barr noted. Customers can use the AWS Management Console or modify their Reserved Instances using the EC2 APIs or the AWS command line interface (CLI), noted Barr. The post explains how to make the change via the AWS console.

In addition to the pricing advantage Reserved Instances offer versus using capacity on demand is the assurance that capacity will be available when needed, Barr noted. But it's important to note that while you'll get the pricing advantage regardless of the network platform used, customers only get the capacity assurance within the network platform of the reserved instance.

About the Author

Jeffrey Schwartz is editor of Redmond magazine and also covers cloud computing for Virtualization Review's Cloud Report. In addition, he writes the Channeling the Cloud column for Redmond Channel Partner. Follow him on Twitter @JeffreySchwartz.