This IBM Redpaper publication provides a broad overview and understanding of Db2 Mirror for i by covering its architecture, positioning, planning, and implementation aspects.
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 link takes you to a list of all published Redbooks and Redpapers for IBM i. Sort by “publish date” to see the most recent documentation.