Product : AppScale, Eucalyptus/Current, 4.4.5
Feature : VM Type - Compute Optimized, Compute, Infrastructure Services
Content Owner:  John Gallucci
Summary
Compute-optimized instance types can be customized by modifying the instance type
Details
http://docs.eucalyptus.cloud/eucalyptus/4.4.5/index.html#euca2ools-guide/euca-modify-instance-type.html