Abstract for DFSMS Advanced Copy Services

This information supports z/OS® (5650-ZOS) and contains information about Data Facility Storage Management Subsystem (DFSMS).

Purpose of this information: The purpose of this publication is to help you understand and use IBM® Advanced Copy Services functions. It describes three “dynamic” copy functions and several “point-in-time” copy functions. These functions provide backup and recovery of data should a disaster occur to your data center. The dynamic functions are peer-to-peer remote copy, extended remote copy, and coupled extended remote copy, and are known collectively as remote copy. FlashCopy®, SnapShot, and Concurrent Copy are the point-in-time copy functions.

Who should read this information: To use this document effectively, you should be familiar with the following information:

Programming, especially programming with TSO commands
Current disaster recovery and workload migration procedures at your location

The person using this information must understand the effects of changing system parameters. For some cases, such as adjustments to the PARMLIB parameters, it is recommended that you contact an IBM representative before you make any adjustments.