IBM® z/OS® Global Mirror (zGM), also known as Extended Remote Copy (XRC), is a combined hardware and software solution that offers the highest levels of continuous data availability in a disaster recovery (DR) and workload movement environment. Available for the IBM DS8000® Storage System, zGM provides an asynchronous remote copy solution.

This IBM Redpaper™ publication takes you through best practices for planning, tuning, operating, and monitoring a zGM installation.

This publication is intended for clients and storage administrators who need to understand and maintain a zGM environment.

Chapter 1. IBM z/OS Global Mirror overview

Chapter 2. Considerations about z/OS Global Mirror planning

Chapter 3. Scenarios for installation deployment and upgrade

Chapter 4. Keeping your z/OS Global Mirror environment working correctly

Chapter 5. Tuning z/OS Global Mirror

Chapter 6. Scenarios for ongoing operations

Chapter 7. Data migration

Appendix A. Checklists for z/OS Global Mirror