z/OS Version 2 Release 3 DFSMS Object Access Method Planning, Installation, and Storage Administration Guide for Tape Libraries IBM SC23-6867-30 Note Before using this information and the product it supports, read the information in “Notices” on page 285. This edition applies to Version 2 Release 3 of z/OS (5650-ZOS) and to all subsequent releases and modifications until otherwise indicated in new editions. Last updated: 2019-06-24 © Copyright International Business Machines Corporation 1993, 2019. US Government Users Restricted Rights – Use, duplication or disclosure restricted by GSA ADP Schedule Contract with IBM Corp. Contents Figures................................................................................................................. ix Tables................................................................................................................ xiii About this book....................................................................................................xv Required product knowledge..................................................................................................................... xv z/OS information.........................................................................................................................................xv How to read syntax diagrams.....................................................................................................................xv How to send your comments to IBM.....................................................................xix If you have a technical problem................................................................................................................xix Summary of changes...........................................................................................xxi Summary of changes for z/OS Version 2 Release 3..................................................................................xxi Summary of changes for z/OS Version 2 Release 2.................................................................................xxii Summary of changes for z/OS Version 2 Release 1................................................................................xxiii z/OS Version 2 Release 1 summary of changes................................................................................ xxiii Chapter 1. Introduction to tape library management.............................................. 1 Automated tape storage.............................................................................................................................. 1 Automated tape library dataserver (ATLDS)..........................................................................................1 Manual tape storage.................................................................................................................................... 2 Manual tape library (MTL)...................................................................................................................... 2 Object access method support for tape libraries........................................................................................2 ISMF role with tape libraries.................................................................................................................. 3 Installation storage management policy overview................................................................................4 System groups in an SMS configuration.................................................................................................4 Storage groups and automated class selections routines..........................................................................5 Understanding the pre-ACS routine exit..................................................................................................... 6 Integrated catalog facility (ICF) and the tape configuration database...................................................... 6 RACF considerations for the VOLCAT.....................................................................................................6 Allocation Considerations with the VOLCAT.......................................................................................... 7 MVS hardware configuration definition....................................................................................................... 7 Types of tape volumes................................................................................................................................. 7 Private tape management...................................................................................................................... 7 Scratch tape management..................................................................................................................... 7 Scratch tape management in an MTL.....................................................................................................8 VTS stacked tape management............................................................................................................. 8 VTS outboard policy management.........................................................................................................8 Duplicate volume management............................................................................................................. 8 TotalStorage Automated Tape Library (3495) system attachment............................................................ 8 High capacity input and output facility.................................................................................................. 9 External high-capacity input and output facility....................................................................................9 Manual mode terminal......................................................................................................................... 10 Library manager application................................................................................................................ 10 Convenience input and output facility................................................................................................. 10 TotalStorage Automated Tape Library (3494) system attachment..........................................................10 Cartridge storage cells......................................................................................................................... 11 Tape systems........................................................................................................................................11 iii Convenience input and output station.................................................................................................12 High capacity input/output facility.......................................................................................................12 Library manager application................................................................................................................ 12 System Storage Automated Tape Library (3584) system attachment.....................................................12 Integrated library manager.................................................................................................................. 12 Virtual tape server (3494) system of the ATLDS.......................................................................................13 Emulating 3490-type virtual tape devices.......................................................................................... 13 Emulating 3490-type virtual volumes................................................................................................. 14 Larger logical volume sizes.................................................................................................................. 14 VTS system import and export functions.............................................................................................15 Tape volume cache...............................................................................................................................15 Storage management of the tape volume cache.................................................................................15 Improved cache management.............................................................................................................15 Deleting expired virtual tape server logical volume data....................................................................16 Secure data erase.................................................................................................................................16 Maintaining data fragments from migrated volumes.......................................................................... 16 Fast response for nonspecific mount requests................................................................................... 16 Using the 3590 and 3592 storage capacity.........................................................................................17 Logical library partitioning....................................................................................................................17 Operator interface................................................................................................................................ 17 Logical volume inventory..................................................................................................................... 17 Physical volume pooling.......................................................................................................................17