@JakeH508  you should be able to find these details in the Install manuals specific to your platform

Could you check on the  Pega Documentation home page?

eg for Pega Platform 8.7 Installation Guide for Apache Tomcat and PostgreSQL

Also see previous question posted on the forum.

Also note: Pega offers the Hardware sizing estimation service to help organizations with hardware resource planning. The sizing estimate can be applied to on-premise, Pega Cloud, or customer cloud implementations.

Using either known or predicted data about the application's usage, Pega applies complex modeling techniques to estimate hardware sizing for the application server disk, CPU, JVM, and database requirements. The hardware sizing estimation team constantly reviews, updates, and enhances the model using global production field information and feedback, in-house metrics, and periodic performance benchmarks to provide the best estimate possible.

Sizing estimates can be applied to any environment at any point of the project, from sales through enterprise planning and production. The hardware sizing estimate can be performed again after your application goes into production. Events such as adding new case types or adding more concurrent users require a new hardware estimate to ensure your application can handle the additional load.

The hardware sizing estimation service uses a questionnaire-based process to gather information. You can send an email to [email protected].