DFSMSrmm is an IBM z/OS feature that is a fully functioning tape management system to manage your removable media. In the last decade, many enhancements were made to DFSMSrmm. This IBM Redbooks publication is intended to help you configure and use the newer functions and features that are now available.

Discussion of the new features is included along with use cases. Hints and tips of various common DFSMSrmm problems and useful configuration and reporting JCL also are included.

This publication is intended as a supplement to DFSMSrmm Primer, SG24-5983, which is still the recommended starting point for any users new to DFSMSrmm.

Chapter 1. External Data Manager function

Chapter 2. Retention methods in DFSMSrmm and the use of the expiration date

Chapter 3. Introduction to the Defaults Table

Chapter 4. Using SMS Management Class to assign tape expiration values

Chapter 5. Logical Write Once Read Many changes

Chapter 6. General Data Protection Regulation changes

Chapter 7. z/OSMF GUI plug-in for DFSMSrmm

Chapter 8. ONLYIF system option for EDGRMMxx

Chapter 9. CDSFULL command for EDGRMMxx

Chapter 10. Global Resource Serialization recommendations for RMM data sets

Chapter 11. Disaster Recovery and Disaster Recovery testing with the TS7700

Chapter 12. Partitioning examples with OPENRULE and PRTITION parameters

Chapter 13. Expire Hold setting and available scratch count

Chapter 14. Common problems in DFSMSrmm

Chapter 15. DFSORT JCL for use with DFSMSrmm

Appendix A. Using EDGRMMxx global defaults for assignment of retention attributes case study

Appendix B. Using Defaults Table for expiration attributes assignment case study

Appendix C. Using Management Class for assignment of expiration attributes case study

Appendix D. Using mixed retention methods VRSEL and EXPDT case study

Appendix E. Using Management Class and Defaults Table together case study

Appendix F. Using MCATTR(ALL) instead of MCATTR(VRSELXDI) case study

Appendix G. Key takeaways from the case studies