How do I find vCPUs for RDS to determine cost of GuardDuty RDS Protection?

To find the vCPUs for your RDS instances to determine the cost of GuardDuty RDS Protection, you'll need to look at the instance type of your RDS database.

For RDS instances, the vCPU count is determined by the instance type you've selected (like db.t3.medium, db.r5.large, etc.). Each instance type has a specific number of vCPUs associated with it. You can find this information in the RDS console:

1. Open the Amazon RDS console
2. Select your database instance
3. Look at the "DB instance class" or "Instance type" in the configuration details

The instance type name typically includes information about the instance family and size (e.g., db.m5.large), and each type has a predefined number of vCPUs.

For Aurora Serverless, instead of vCPUs, capacity is measured in Aurora Capacity Units (ACUs). To estimate ACUs for cost calculations, you would need to look at your Aurora Serverless configuration settings or monitor the actual ACU usage in CloudWatch metrics.

For the most accurate cost estimation for GuardDuty RDS Protection, you can:

1. Enable GuardDuty with RDS Protection for the 30-day free trial period
2. View the estimated costs in the GuardDuty console's usage page, which will show costs broken down by data source
3. Use the AWS Command Line Interface with the GetUsageStatistics API to retrieve detailed usage statistics

This will give you the most accurate estimate based on your actual environment and usage patterns.
Sources
How can I get a Cost estimate of these guard duty features in my environment | AWS re:Post
Moving from RDS to Aurora or Aurora Serverless [PostgreSQL] | AWS re:Post

Hello.

Please tell us the RDS Aurora instance type you are using.
Once you know the instance type, you can check the vCPUs from the following documentation.
https://aws.amazon.com/rds/instance-types/?nc1=h_ls

If you are using Aurora Serverless v2 with RDS, you should be able to see the ACU in the management console.