As the team who wrote this guide states: ‘…This guide outlines the infrastructure design elements that are crucial to a successful implementation of Operations Manager. It guides you through the process of designing components, layout, and connectivity in a logical, sequential order. You’ll find easy-to-follow steps on identification and design of the required management groups, helping you to optimize the management infrastructure...’
The downloadable zip file contains 3 files, a Visio file, Word document and a PDF file. Very good information it is.
IPD for OM12 can be downloaded from here.