The importance of business continuity and disaster recovery remains at the forefront of thought for many executives and IT technical professionals. This IBM® Redpaper™ describes the lessons learned from recent disasters and how IBM storage technology can help businesses address many of the issues related to protecting their storage infrastructures and business-critical IT applications.

Two principal disaster recovery metrics, Recovery Time Objective and Recovery Point Objective, are defined and, along with the associated cost tradeoffs, are discussed from the vantage point of various IBM storage technology solutions.

Two IBM Business Continuance/Disaster Recovery (BC/DR) automation solutions, known as GDPS/PPRC with HyperSwap® and GDPS/PPRC HyperSwap Manager, are described and shown how they can help an installation move closer to attaining a goal of continuous operationGDPS/PPRC with HyperSwap operates in z/OS® environments.

For z/OS installations operating two or more sites, in the event of a storage subsystem, host, network or communications facility failure, a switch to processing at an alternate site can be made in almost real time by using GDPS/PPRC with HyperSwap.

Additionally, many Clustered Open Systems that are integrated with IBM Remote Copy technology can be configured to switch to a second site in almost real time. In these situations, when a site switch is executed, applications that have been cloned at both sites can continue running with minimal impact to the user.

Chapter 1. Introduction

Chapter 2. Part I: The lessons of 9/11

Chapter 3. Part II: Storage Technology for Disaster Recovery