CoverageNormalizedUnits
The amount of instance usage, in normalized units. You can use normalized units to see your EC2 usage for multiple sizes of instances in a uniform way. For example, suppose that you run an xlarge instance and a 2xlarge instance. If you run both instances for the same amount of time, the 2xlarge instance uses twice as much of your reservation as the xlarge instance, even though both instances show only one instance-hour. When you use normalized units instead of instance-hours, the xlarge instance used 8 normalized units, and the 2xlarge instance used 16 normalized units.
For more information, see Modifying Reserved Instances in the Amazon Elastic Compute Cloud User Guide for Linux Instances.
Types
Properties
The percentage of your used instance normalized units that a reservation covers.
The number of normalized units that are covered by On-Demand Instances instead of a reservation.
The number of normalized units that a reservation covers.
The total number of normalized units that you used.