Part 3 Operation
by Chen Zhu, Takahiro Tsuda, Michael Scott, Aderson Pacini, Alberto Barajas Ortiz,
IBM TS7700 Release 4.1 and 4.1.2 Guide
- Front cover
- Notices
- Preface
- Summary of changes
- Part 1 Architecture and planning
- Chapter 1. Introducing the IBM TS7700
- Chapter 2. Architecture, components, and functional characteristics
- 2.1 TS7700 architecture
- 2.2 Stand-alone cluster: Components, functions, and features
- 2.2.1 Views from the Host: Library IDs
- 2.2.2 Tape Volume Cache
- 2.2.3 Virtual volumes and logical volumes
- 2.2.4 Logical volumes and compression
- 2.2.5 Mounting a scratch virtual volume
- 2.2.6 Mounting a specific virtual volume
- 2.2.7 Logical WORM support and characteristics
- 2.2.8 Virtual drives
- 2.2.9 Selective Device Access Control
- 2.2.10 Physical drives
- 2.2.11 Stacked volume
- 2.2.12 Selective Dual Copy function
- 2.2.13 General TVC management in a stand-alone cluster
- 2.2.14 TVC Cache management in a TS7740 stand-alone cluster
- 2.2.15 About TVC cache management in a TS7700D and TS7700T CP0 stand-alone cluster
- 2.2.16 TVC Cache management in a TS7700T CPx stand-alone cluster
- 2.2.17 Expired virtual volumes and the Delete Expired function
- 2.2.18 TVC management processes for TS7740 or TS7700T CPx
- 2.2.19 TVC handling in outage situations
- 2.2.20 Copy Consistency Point: Copy policy modes in a stand-alone cluster
- 2.2.21 TVC selection in a stand-alone cluster
- 2.2.22 TVC encryption
- 2.2.23 Physical volume pools
- 2.2.24 Logical and stacked volume management
- 2.2.25 Secure Data Erase function
- 2.2.26 Copy Export function
- 2.2.27 Encryption of physical tapes
- 2.2.28 User Management: Roles and profiles
- 2.2.29 Security identification by using Lightweight Directory Access Protocol
- 2.2.30 Grid Resiliency Functions
- 2.2.31 Service preparation mode
- 2.2.32 Service mode
- 2.2.33 Control Unit Initiated Reconfiguration
- 2.3 Multi-cluster grid configurations: Components, functions, and features
- 2.3.1 Rules in a multi-cluster grid
- 2.3.2 Required grid hardware
- 2.3.3 Data integrity by volume ownership
- 2.3.4 I/O TVC selection
- 2.3.5 Copy consistency points
- 2.3.6 Cluster family concept
- 2.3.7 Override settings concept
- 2.3.8 Host view of a multi-cluster grid and Library IDs
- 2.3.9 Tape Volume Cache
- 2.3.10 Virtual volumes and logical volumes
- 2.3.11 Mounting a scratch virtual volume
- 2.3.12 Mounting a specific virtual volume
- 2.3.13 Logical WORM support and characteristics
- 2.3.14 Virtual drives
- 2.3.15 Allocation assistance
- 2.3.16 Selective Device Access Control
- 2.3.17 Physical drives
- 2.3.18 Stacked volume
- 2.3.19 Selective Dual Copy function
- 2.3.20 General TVC management in multi-cluster grids
- 2.3.21 Expired virtual volumes and the Delete Expired function
- 2.3.22 TVC management for TS7740 and TS7700T CPx in a multi-cluster grid
- 2.3.23 TVC management for TS7760 or TS7720 in a multi-cluster grid
- 2.3.24 TVC management processes in a multi-cluster grid
- 2.3.25 Copy Consistency Point: Copy policy modes in a multi-cluster grid
- 2.3.26 TVC (I/O) selection in a multi-cluster grid
- 2.3.27 TVC handling in an unavailability condition
- 2.3.28 Remote (cross) cluster mounts
- 2.3.29 TVC encryption
- 2.3.30 Logical and stacked volume management
- 2.3.31 Secure Data Erase
- 2.3.32 Copy Export
- 2.3.33 Encryption of physical tapes
- 2.3.34 Autonomic Ownership Takeover Manager
- 2.3.35 Selective Write Protect for disaster recovery testing
- 2.3.36 FlashCopy for disaster recovery testing
- 2.3.37 Grid resiliency functions
- 2.3.38 Service preparation mode
- 2.3.39 Service mode
- 2.3.40 Control Unit Initiated Reconfiguration
- 2.4 Grid configuration examples
- Chapter 3. IBM TS7700 usage considerations
- 3.1 Introduction
- 3.2 Gather your business requirements
- 3.3 Features and functions for all TS7700 models
- 3.3.1 Stand alone versus grid environments
- 3.3.2 Sharing a TS7700
- 3.3.3 Tape Volume Cache selection
- 3.3.4 Copy Consistency policy
- 3.3.5 Synchronous mode copy
- 3.3.6 Override policies
- 3.3.7 Cluster family
- 3.3.8 Logical Volume Delete Expire Processing versus previous implementations
- 3.3.9 Software compression (LZ4 and ZSTD)
- 3.3.10 Encryption
- 3.3.11 z/OS Allocation with multiple grids connected to a single host
- 3.3.12 z/OS Allocation assistance inside a grid
- 3.3.13 25 GB logical volumes
- 3.3.14 Grid resiliency function: “Remote†fence
- 3.3.15 Control Unit Initiated Reconfiguration
- 3.4 Features and functions available only for the TS7700T
- 3.5 Operation aspects: Monitoring and alerting
- 3.6 Choosing a migration method
- Chapter 4. Preinstallation planning and sizing
- 4.1 Hardware installation and infrastructure planning
- 4.2 Planning for a grid operation
- 4.2.1 Autonomic Ownership Takeover Manager considerations
- 4.2.2 Defining grid copy mode control
- 4.2.3 Defining scratch mount candidates
- 4.2.4 Retain Copy mode
- 4.2.5 Defining cluster families
- 4.2.6 TS7720 and TS7760 cache thresholds and removal policies
- 4.2.7 Data management settings (TS7740/TS7700T CPx in a multi-cluster grid)
- 4.2.8 High availability considerations
- 4.3 Planning for software implementation
- 4.4 Planning for logical and physical volumes
- 4.4.1 Volume serial numbering
- 4.4.2 Virtual volumes
- 4.4.3 Logical WORM
- 4.4.4 Physical volumes for TS7740, TS7720T, and TS7760T
- 4.4.5 Data compression
- 4.4.6 Secure Data Erase function
- 4.4.7 Planning for tape encryption in a TS7740, TS7720T, and TS7760T
- 4.4.8 Planning for cache disk encryption in the TS7700
- 4.5 Tape analysis and sizing the TS7700
- Chapter 5. Disaster recovery
- Part 2 Implementation and migration
- Chapter 6. IBM TS7700 implementation
- Chapter 7. Hardware configurations and upgrade considerations
- 7.1 TS7700 hardware components
- 7.2 TS7700 component upgrades
- 7.2.1 TS7700 concurrent system component upgrades
- 7.2.2 TS7700 non-concurrent system component upgrades
- 7.2.3 TS7760 Cache upgrade options
- 7.2.4 TS7720 Cache upgrade options
- 7.2.5 TS7740 Tape Volume Cache upgrade options
- 7.2.6 Upgrading drive models in an existing TS7740 or TS7700T
- 7.2.7 Frame replacement of old hardware with new hardware
- 7.3 TS7700 upgrade to Release 4.1
- 7.4 Adding clusters to a grid
- 7.5 Removing clusters from a grid
- Chapter 8. Migration
- 8.1 Migration to a TS7700
- 8.2 Migration between TS7700s
- 8.3 Methods to move data for host-based migration
- 8.4 Moving data out of the TS7700
- 8.5 Migration of DFSMShsm-managed data
- 8.6 DFSMSrmm and other tape management systems
- 8.7 IBM Spectrum Protect
- 8.8 DFSMSdss
- 8.9 Object access method
- 8.10 Database backups
- Part 3 Operation
- Chapter 9. Operation
- Chapter 10. Host Console operations
- 10.1 System-managed tape
- 10.2 Messages from the library
- 10.3 EXPIRE HOLD and scratch processing considerations
- 10.4 Scratch count mismatch
- 10.5 Effects of changing volume categories
- 10.6 Library messages and automation
- 10.7 Mount Retry (R4.1.2 Enhancement)
- 10.8 CUIR for Tape (R4.1.2 Enhancement)
- 10.9 Return-to-scratch enhancement
- 10.10 Deleting Logical Volumes
- Chapter 11. Performance and monitoring
- 11.1 Overview
- 11.2 TS7700 performance characteristics
- 11.3 Basic performance overview
- 11.4 Monitoring TS7700 performance
- 11.5 Cache capacity
- 11.6 Cache throughput / Cache bandwidth
- 11.7 TS7700 throughput: Host I/O increments
- 11.8 Grid link and replication performance
- 11.8.1 Installed grid link hardware: Mixing of different Grid link adapters
- 11.8.2 Bandwidth and quality of the provided network
- 11.8.3 Selected replication mode
- 11.8.4 Tuning possibilities for copies: COPYCOUNT Control
- 11.8.5 Tuning possibilities for copies: Deferred Copy Throttling
- 11.8.6 Grid link performance monitoring
- 11.9 Considerations for the backend TS7740 / TS7700T
- 11.9.1 Amount of Back-end drives
- 11.9.2 Monitor Backend drives in the MI
- 11.9.3 Monitor Backend drives in the VEHSTATS
- 11.9.4 Monitor Backend drives with a LI REQ command
- 11.9.5 Tune the usage of back-end drives
- 11.9.6 Number of back-end cartridges
- 11.9.7 Monitor the usage of back-end cartridges on the MI
- 11.9.8 Monitor the usage of back-end cartridges with VEHSTATS
- 11.9.9 Tuning of the usage of Back-end cartridges with VEHSTATS
- 11.10 Throttling the TS7700
- 11.11 Adjusting parameters in the TS7700
- 11.12 Monitoring after service or outage
- 11.13 Performance evaluation tool: Plotting cache throughput from VEHSTATS
- 11.14 Bulk Volume Information Retrieval
- 11.15 Alerts and exception and message handling
- 11.16 IBM Tape Tools
- 11.17 Using Volume Mount Analyzer
- 11.18 Using VEHSTATS and VEHGRXCL for monitoring and reporting
- 11.19 IBM z/OS commands for monitoring
- 11.20 What to look for and where
- 11.21 Virtual Device Allocation in z/OS with JES2
- Chapter 12. Copy Export
- Chapter 13. Disaster recovery testing
- 13.1 DR testing overview
- 13.2 DR testing methods
- 13.3 DR general considerations
- 13.3.1 The z/OS test environment represents a point in time
- 13.3.2 The data that is available in the DR cluster
- 13.3.3 Write Protect Mode
- 13.3.4 Protection of your production data
- 13.3.5 Separating production and disaster recovery hosts: Logical volumes
- 13.3.6 Creating data during the disaster recovery test from the DR host: Selective Write Protect
- 13.3.7 Creating data during the disaster recovery test from the disaster recovery host: Copy policies
- 13.3.8 Restoring the DR host from a production host
- 13.3.9 Scratch runs during the disaster recovery test from the production host
- 13.3.10 Scratch runs during the disaster recovery test from the DR host
- 13.3.11 Cleanup phase of a disaster recovery test
- 13.3.12 Considerations for DR tests without Selective Write Protect mode
- 13.3.13 Returning to scratch without using Selective Write Protect
- 13.4 DR for FlashCopy concepts and command examples
- 13.5 DR testing methods examples
- 13.6 Expected failures during a DR test
- Part 4 Appendixes
- Appendix A. Feature codes and RPQ
- Appendix B. IBM TS7700 implementation for IBM z/VM, IBM z/VSE, and IBM z/TPF environments
- Appendix C. JES3 examples and information
- Appendix D. DEVSERV QLIB command
- Appendix E. Sample job control language
- Appendix F. Library Manager volume categories
- Appendix G. IBM TS7700 parameter examples
- Appendix H. Extra IODF examples
- Appendix I. Case study for logical partitioning of a two-cluster grid
- Related publications
- Back cover
Operation
This part describes daily operations and the monitoring tasks related to the IBM TS7700. It also provides you with planning considerations and scenarios for disaster recovery, and for disaster recovery testing.
This part includes the following chapters:
-
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