Each release of IBM® Data Facility Storage Management Subsystem (DFSMS) builds on the previous version. The latest release, IBM z/OS® V1.13 DFSMS, provides enhancements in these areas for the z/OS platform in a system-managed storage environment: Storage management Data access Device support Program management Distributed data access This IBM Redbooks® publication provides a summary of the functions and enhancements in z/OS V1.13 DFSMS. It provides information that you need to understand and evaluate the content of this DFSMS release, along with practical implementation hints and tips. This book also includes enhancements that are available by enabling PTFs that have been integrated into z/OS DFSMS V1.13. This book was written for storage professionals and system programmers who have experience with the components of DFSMS. It provides sufficient information so that you can start prioritizing the implementation of new functions and evaluating their applicability in your DFSMS environment.