CTERA monitors the available Amazon instance types to recommend the best instance type.
CTERA Portals and Edge Filers using a family instance type can be changed to a different family instance type.
For details, refer to AWS documentation. For example, https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ec2-instance-resize.html.
To change an instance type, contact CTERA Support.