Front cover IBM z/OS DFSMShsm Primer Keith Winnard Jose Gilberto Biondo Gert Laumann Norbert Sclumberger Jeanne Vangsness Chao Xing Ma Redbooks International Technical Support Organization IBM z/OS DFSMShsm Primer September 2015 SG24-5272-03 Note: Before using this information and the product it supports, read the information in “Notices” on page xi. Fourth Edition (September 2015) This edition applies to Version 2, Release 1 of Data Facility Storage Management Subsystem (DFSMS) (product number 5650-ZOS). © Copyright International Business Machines Corporation 1998, 2015. All rights reserved. Note to U.S. Government Users Restricted Rights -- Use, duplication or disclosure restricted by GSA ADP Schedule Contract with IBM Corp. Contents Notices . xi Trademarks . xii Preface . xiii Authors. xiii Now you can become a published author, too! . xiv Comments welcome. .xv Stay connected to IBM Redbooks . .xv Summary of changes. xvii September 2015, Fourth Edition . xvii Chapter 1. DFSMShsm overview . 1 1.1 Introduction . 2 1.2 Storage device hierarchy . 2 1.3 SMS and DFSMShsm relationship . 3 1.4 DFSMShsm control data sets . 5 1.5 Data set lifecycle with DFSMShsm . 5 1.5.1 Data set create . 6 1.5.2 Data set backup . 6 1.5.3 Data set update. 7 1.5.4 Data set migration. 7 1.5.5 Data set recall . 8 1.5.6 Data set expiration . 9 1.5.7 Data set recovery . 9 1.5.8 Expiring backup versions . 10 1.6 Space management . 10 1.6.1 Recycle activity . 11 1.6.2 Primary space management . 11 1.6.3 Secondary space management . 12 1.6.4 Interval migration . 12 1.6.5 On-demand migration . 13 1.7 Availability management . 13 1.7.1 Backup and recovery . 13 1.7.2 Dump . 15 1.8 Tape processing . 15 Chapter 2. Planning and reviewing your environment. 17 2.1 Considerations . 18 2.2 Determine how you want DFSMShsm to manage your data . 19 2.2.1 Planning for the space management process. 19 2.2.2 Planning for availability management . 20 2.3 Tape duplexing . 22 2.4 Data encryption . 22 2.4.1 zEDC hardware compression . 22 2.5 Using small-data-set packing . 23 2.6 Expired data sets and tape recycle . 24 2.7 SMS classes and ACS routines . 24 2.8 Security aspects in the DFSMShsm environment. 24 © Copyright IBM Corp. 1998, 2015. All rights reserved. iii 2.9 Invoking DSS to move data. 25 2.10 Interactions with object access method . 26 2.11 Interaction with the DFSMSrmm tape management system. 27 2.12 Preparation for problem diagnostic determination . 27 Chapter 3. Getting started . 29 3.1 DFSMShsm components . 30 3.2 DFSMShsm starter set . 30 3.2.1 Contents of HSM.SAMPLE.CNTL. 31 3.2.2 ALLOCBK1 . 50 3.2.3 ALLOSDSP . 50 3.2.4 ARCCMD01 . 50 3.2.5 ARCCMD90 . 51 3.2.6 ARCCMD91 . 51 3.2.7 HSMHELP. 52 3.2.8 HSMLOG . 52 3.2.9 HSMEDIT . 53 3.2.10 HSMPRESS . 54 3.3 Media that is owned by DFSMShsm . 54 3.4 DFSMShsm operations . 54 3.4.1 Stopping DFSMShsm . 54 3.4.2 Starting DFSMShsm . 55 3.4.3 MASH implications . 56 3.4.4 Sending commands to DFSMShsm . ..