Identify any failed RDS Reserved Instances (RIs) available within your AWS account and follow Cloud Conformity recommendations for remediation in order to enable discounted hourly rates for RDS database instances in exchange of reserving a certain amount of compute usage upfront. A failed RDS RI is an unsuccessful reservation that received the "payment-failed" status during the purchase process.
The cost savings when using RDS Reserved Instances over On-Demand Instances are up to 70% when used in steady state (i.e. heavy utilization), therefore in order to receive this discount benefit you need to make sure that all your RDS database reservation purchases have been successfully completed.
To identify any failed RDS RI purchases available in your AWS account, perform the following: