This is a Redpaper that reviews the IBM Application Runtime Expert for i (ARE), which can help you ensure consistent performance and deployment for any workload running on your system. While this Redpaper was written in 2011, it is still applicable.
This is the Technology Updates landing page for IBM Cloud Storage Solutions for i.
This IBM web site has information about RPG enhancements and other RPG-related topics.
The official documentation for IBM POWER10. Select your specific version from this starting point.
Navigator for i – new version – provides a comprehensive set of system management features for IBM i.