IBM® Geographically Dispersed Parallel Sysplex™ (GDPS®) is a collection of several offerings, each addressing a different set of IT resiliency goals. It can be tailored to meet the recovery point objective (RPO), which is how much data can you are willing to lose or recreate, and the recovery time objective (RTO), which identifies how long can you afford to be without your systems for your business from the initial outage to having your critical business processes available to users.

Each offering uses a combination of server and storage hardware or software-based replication, and automation and clustering software technologies.

This IBM Redbooks® publication presents an overview of the IBM GDPS active/active (GDPS/AA) offering and the role it plays in delivering a business IT resilience solution.

Chapter 1. Introduction

Chapter 2. Architectural overview

Chapter 3. GDPS and data replication

Chapter 4. Workload distribution and balancing

Chapter 5. Controlling and monitoring

Chapter 6. Planning considerations

Chapter 7. Other Considerations

Appendix A. IBM Global Technology Services and GDPS service offering