Computer Drive User Manual

ManualsBrandsIBM ManualsComputer HardwareDS6000

Table Of Contents

Front cover
Contents
Notices
- Trademarks
Preface
- The team that wrote this redbook
- Acknowledgements
- Become a published author
- Comments welcome
Summary of changes
- December 2006, Third Edition
Part 1 Overview
Chapter 1. Introduction
- 1.1 Introduction to Copy Services
Chapter 2. Copy Services architecture
- 2.1 Introduction to the Copy Services structure
- 2.2 How the new structure of Copy Services works
  - 2.2.1 Remote Mirror and Copy between Storage Complexes
  - 2.2.2 Differences between the DS CLI and the DS GUI
- 2.3 System z communication path for Copy Services
Part 2 Interfaces
Chapter 3. DS Storage Manager
- 3.1 System and hardware requirements
  - 3.1.1 Supported operating systems
- 3.2 Installation modes
- 3.3 Connecting to your DS6000 SMC
- 3.4 Accessing the Information Center
- 3.5 Managing the Storage Complex
  - 3.5.1 Procedure to add a Storage Complex
Chapter 4. DS Command-Line Interface
- 4.1 Introduction and functionality
- 4.2 Supported operating systems for the DS CLI
- 4.3 User accounts
- 4.4 DS CLI profile
- 4.5 Command structure
- 4.6 Copy Services commands
- 4.7 Using the DS CLI application
- 4.8 Return codes
- 4.9 User assistance
- 4.10 Usage examples
Chapter 5. System z interfaces
- 5.1 System z interfaces
  - 5.1.1 Operating system alternatives
- 5.2 TSO
- 5.3 ICKDSF
- 5.4 DFSMSdss
- 5.5 The ANTRQST macro
- 5.6 z/TPF commands
Part 3 FlashCopy
Chapter 6. FlashCopy overview
- 6.1 Operational environments
- 6.2 Terminology
- 6.3 Basic concepts
  - 6.3.1 Full volume copy
  - 6.3.2 Nocopy option
- 6.4 FlashCopy in combination with other Copy Services
- 6.5 FlashCopy for z/OS data sets
Chapter 7. FlashCopy options
- 7.1 Multiple relationship FlashCopy
- 7.2 Consistency Group FlashCopy
- 7.3 FlashCopy target as a Metro Mirror or Global Copy primary
- 7.4 Incremental FlashCopy - refresh target volume
- 7.5 Remote FlashCopy
- 7.6 Persistent FlashCopy
- 7.7 Data set FlashCopy
- 7.8 Reverse restore
- 7.9 Fast reverse restore
- 7.10 Options and interfaces
Chapter 8. FlashCopy ordering and activation
- 8.1 Ordering FlashCopy
- 8.2 Activating FlashCopy
  - 8.2.1 Management
  - 8.2.2 Activation
Chapter 9. FlashCopy interfaces
- 9.1 FlashCopy interfaces - overview
- 9.2 DS CLI and DS SM - commands and options
  - 9.2.1 Local FlashCopy management
  - 9.2.2 Remote FlashCopy management
- 9.3 z/OS-provided interfaces
- 9.4 Local FlashCopy using the DS CLI
- 9.5 Remote FlashCopy using the DS CLI
  - 9.5.1 Remote FlashCopy commands
  - 9.5.2 Parameters used in remote FlashCopy commands
- 9.6 FlashCopy management using the DS SM
- 9.7 z/OS interfaces for local FlashCopy
  - 9.7.1 Initiating FlashCopy using DFSMSdss
  - 9.7.2 FlashCopy using TSO commands
Chapter 10. FlashCopy performance
- 10.1 FlashCopy performance overview
- 10.2 FlashCopy establish phase performance
- 10.3 Background copy performance
- 10.4 FlashCopy impact on applications
- 10.5 FlashCopy options - considerations
- 10.6 FlashCopy scenarios
Chapter 11. FlashCopy examples
- 11.1 Create a test system or integration system
  - 11.1.1 One-time test system
  - 11.1.2 Multiple setup of a test system with same contents
- 11.2 Create a backup
Part 4 Metro Mirror
Chapter 12. Metro Mirror overview
- 12.1 Metro Mirror overview
- 12.2 Metro Mirror volume state
- 12.3 Data consistency
- 12.4 Rolling disaster
- 12.5 Automation and management
Chapter 13. Metro Mirror options and configuration
- 13.1 High availability solutions
  - 13.1.1 GDPS HyperSwap Manager
  - 13.1.2 Open systems - Clustering
- 13.2 Failover and failback
- 13.3 Consistency Group function
- 13.4 Metro Mirror paths and links
  - 13.4.1 Fibre Channel links
  - 13.4.2 Logical paths
- 13.5 Bandwidth
- 13.6 LSS design
- 13.7 Distance
- 13.8 Symmetrical configuration
- 13.9 Volumes
- 13.10 Hardware requirements
Chapter 14. Metro Mirror interfaces
- 14.1 Metro Mirror interfaces - overview
- 14.2 TSO commands for Metro Mirror management
- 14.3 ICKDSF
- 14.4 DS Command-Line Interface
  - 14.4.1 DS CLI supported environments
- 14.5 DS CLI command- examples
- 14.6 DS Storage Manager GUI
- 14.7 ANTRQST API
Chapter 15. Metro Mirror performance and scalability
- 15.1 Performance
- 15.2 Scalability
Chapter 16. Metro Mirror examples
- 16.1 Resynchronization of suspended volume using TSO
- 16.2 Failover and failback using TSO
  - 16.2.1 Failover process
  - 16.2.2 Failback process
- 16.3 Open systems volumes with TSO commands
- 16.4 Define Metro Mirror path using ICKDSF
- 16.5 DS CLI freezepprc and unfreezepprc commands
Part 5 Global Copy
Chapter 17. Global Copy overview
- 17.1 Global Copy overview
- 17.2 Volume states and change logic
- 17.3 Global Copy positioning
Chapter 18. Global Copy options and configuration
- 18.1 Global Copy basic options
- 18.2 Catch-up transition
- 18.3 Create a consistent point-in-time copy
- 18.4 Cascading for ESS migration
- 18.5 Hardware requirements
- 18.6 DS6800 I/O ports
- 18.7 Global Copy connectivity
  - 18.7.1 Fibre Channel links
  - 18.7.2 Logical paths
- 18.8 Distance considerations
- 18.9 Other planning considerations
Chapter 19. Global Copy performance and scalability
- 19.1 Performance
  - 19.1.1 Peak bandwidth requirements
- 19.2 Scalability
  - 19.2.1 Addition of capacity
Chapter 20. Global Copy interfaces
- 20.1 Global Copy interfaces - overview
- 20.2 TSO commands for Global Copy management
- 20.3 ICKDSF utility for Global Copy management
- 20.4 DS Command-Line Interface (DS CLI)
  - 20.4.1 Define Global Copy paths
  - 20.4.2 Manage Global Copy pairs
- 20.5 DS Storage Manager
  - 20.5.1 Paths panel
  - 20.5.2 Metro Mirror panel
Chapter 21. Global Copy examples
- 21.1 Define and manage Global Copy pairs using TSO
- 21.2 Global Copy for migration using the DS CLI
  - 21.2.1 Migration procedure steps
  - 21.2.2 Cascading alternative
Chapter 22. Global Mirror overview
- 22.1 Synchronous and non synchronous data replication
  - 22.1.1 Synchronous data replication and dependent writes
  - 22.1.2 Asynchronous data replication and dependent writes
- 22.2 Basic concepts of Global Mirror
- 22.3 Set up a Global Mirror session
- 22.4 Consistency Groups
  - 22.4.1 Consistency Group formation
  - 22.4.2 Consistency Group parameters
Part 6 Global Mirror
Chapter 23. Global Mirror options and configuration
- 23.1 Terminology used in Global Mirror environments
- 23.2 Create a Global Mirror environment
- 23.3 Modify a Global Mirror session
- 23.4 Remove a Global Mirror environment
- 23.5 Global Mirror with multiple storage disk subsystems
- 23.6 Connectivity between local and remote site
  - 23.6.1 Multi-site host connectivity
  - 23.6.2 Single site host connectivity
- 23.7 Recovery scenario after primary site failure
Chapter 24. Global Mirror interfaces
- 24.1 Global Mirror interfaces - overview
- 24.2 Different interfaces for the same function
- 24.3 Global Mirror management using TSO commands
- 24.4 DS CLI to manage Global Mirror volumes in z/OS
- 24.5 Global Mirror management using ICKDSF
- 24.6 ANTRQST macro
- 24.7 DS Storage Manager GUI
  - 24.7.1 View Global Mirror volumes in session
  - 24.7.2 Pause and resume Global Mirror
Chapter 25. Global Mirror performance and scalability
- 25.1 Performance aspects for Global Mirror
- 25.2 Performance considerations at coordination time
- 25.3 Consistency Group transmission
- 25.4 Remote storage disk subsystem configuration
- 25.5 Growth within Global Mirror configurations
Chapter 26. Global Mirror examples
- 26.1 Global Mirror examples - configuration
- 26.2 Global Mirror query examples with TSO
- 26.3 Set up the Global Mirror environment using TSO
- 26.4 Primary site failure and recovery management with TSO
- 26.5 Remove Global Mirror environment using TSO
- 26.6 Planned outage management using ICKDSF
- 26.7 Remove a Global Mirror environment using ICKDSF
- 26.8 Query device information with ICKDSF
- 26.9 Set up a Global Mirror environment using DS SM
- 26.10 Set up a Global Mirror environment using the DS CLI
- 26.11 Control and Query Global Mirror with the DS CLI
- 26.12 Site switch basic operations using the DS CLI
- 26.13 Remove the Global Mirror environment with the DS CLI
Part 7 Interoperability
Chapter 27. Combining Copy Service functions
- 27.1 Data migration
Chapter 28. Interoperability between DS6000 and DS8000
- 28.1 DS6000 and DS8000 Copy Services interoperability
- 28.2 Preparing the environment
- 28.3 RMC: Establishing paths between DS6000 and DS8000
- 28.4 Managing Metro Mirror or Global Copy pairs
- 28.5 Managing DS6000 to DS8000 Global Mirror
  - 28.5.1 Managing Global Mirror pairs using DS CLI
- 28.6 Managing DS6000 and DS8000 FlashCopy
  - 28.6.1 Creating a remote FlashCopy on an DS6000 using DS CLI
- 28.7 z/OS Global Mirror
Part 8 Solutions
Chapter 29. Interoperability between DS6000 and ESS 800
- 29.1 DS6000 and ESS 800 Copy Services interoperability
- 29.2 Preparing the environment
- 29.3 RMC: Establishing paths between DS6000 and ESS 800
- 29.4 Managing Metro Mirror or Global Copy pairs
- 29.5 Managing ESS 800 Global Mirror
  - 29.5.1 Managing Global Mirror pairs using the DS CLI
- 29.6 Managing ESS 800 FlashCopy
Chapter 30. IIBM TotalStorage Rapid Data Recovery
- 30.1 Introduction
  - 30.1.1 Solution highlights
- 30.2 Overview
- 30.3 Architecture
- 30.4 Additional information
Chapter 31. IBM TotalStorage Productivity Center for Replication
- 31.1 IBM TotalStorage Productivity Center
- 31.2 Where we are coming from
- 31.3 What TPC for Replication provides
- 31.4 Copy Services terminology
- 31.5 TPC for Replication terminology
  - 31.5.1 TPC for Replication Copy Set
  - 31.5.2 TPC for Replication session
- 31.6 TPC for Replication session types
  - 31.6.1 TPC for Replication Basic Edition
  - 31.6.2 TPC for Replication Advanced Edition
- 31.7 TPC for Replication session states
- 31.8 Volumes in a copy set
- 31.9 TPC for Replication and scalability
- 31.10 TPC for Replication system and connectivity overview
- 31.11 TPC for Replication monitoring and freeze capability
- 31.12 TPC for Replication heartbeat
- 31.13 Supported platforms
- 31.14 Hardware requirements for TPC for Replication servers
- 31.15 TPC for Replication GUI
- 31.16 Command Line Interface to TPC for Replication
Chapter 32. GDPS overview
- 32.1 GDPS solution offerings
Appendix A. Concurrent Copy
- Concurrent Copy
Appendix B. SNMP notifications
- SNMP overview
- Physical connection events
- Remote copy events
- Global Mirror related events
Appendix C. Licensing
- Licenses
- Authorized level
  - Charging example
Appendix D. CLI migration
- Migrating ESS CLI to DS CLI
  - Reviewing the ESS tasks to migrate
  - Convert the individual tasks
Related publications
- IBM Redbooks
- Other publications
- Online resources
- How to get IBM Redbooks
- Help from IBM
Index
Back cover

Chapter 6. FlashCopy overview

FlashCopy creates a copy of a volume at a specific point-in-time, which we also refer to as a

Point-in-Time copy, instantaneous copy, or time-zero copy (t0 copy).

This chapter explains the basic characteristics of FlashCopy when used in a System z

environment with the DS6000. The following topics are discussed:

򐂰 FlashCopy operational areas.

򐂰 FlashCopy basic concepts.

򐂰 FlashCopy in combination with other Copy Services.

򐂰 Data set level FlashCopy.