True Copy for Mainframe User Guide for VSP One Block 85

Version: 10.5.x
Audience: anonymous
Part Number: MK-26VSP1B036-01
Published: 2026-05-04

Overview of TrueCopy for Mainframe
TrueCopy for Mainframe copy operations
System components
Storage systems
Hosts
Volume pairs
Data path
Consistency groups
User interfaces
Failover software
Initial copy and update copy operations
Initial copy operations
Update copy operations
Pair status
Requirements and specifications
System requirements and specifications
Data path requirements and configurations
Fibre Channel requirements
Supported data path configurations for Fibre Channel
Direct connection
Connection using switches
Extender connection
Fibre Channel used as remote paths
Business Continuity Manager specifications
Options not supported by Business Continuity Manager
Command device
F/M = FB message output control option
PPRC specifications and restrictions
TrueCopy for Mainframe operations performed with PPRC
TrueCopy for Mainframe options not supported with PPRC
PPRC and BCM command comparison
SAID values for CESTPATH/YKBLDPTH
P/DAS support and restrictions
P/DAS restrictions
GDPS support
RMF PPRC link path statistical information support
Planning for Basic HyperSwap, TPC-R, and CSM operations
Requirements for Basic HyperSwap, TPC-R, and CSM operations
Recommendations for Basic HyperSwap, TPC-R, and CSM operations
Planning for Extended Address Volume
zHyperWrite function support
CCI support for TrueCopy and TrueCopy for Mainframe operations
Supported operations and options
PPRC multi-target function support
Requirements for PPRC multi-target configuration
PPRC multi-target configuration
PPRC multi-target configuration using MTIR
PPRC cascade configuration
Planning for TrueCopy for Mainframe
Storage system preparation
Shared memory requirements
Advanced system settings
DFW requirements
Remote replication options
Round trip time option
Minimum number of remote paths option
Maximum initial copy activities option
Blocked path monitoring options
Services SIM of remote copy option
PPRC support CU option
Analyzing workload and planning data paths
Pair and pair volumes planning
Pair volume requirements and recommendations
Precautions for duplicate VOLSERs
Allowing I/O to the S-VOL
Allowing I/O to the P-VOL after a split: Fence Level options
Differential data
Maximum number of pairs supported
Calculating the maximum number of pairs
Initial copy priority option and scheduling order
Consistency group planning
Consistency group for pairs in one primary and one secondary storage system
Consistency group for pairs in multiple primary and secondary storage systems
System configurations for consistency groups
Registering pairs to a new consistency group when creating a new TCz pair
Registering pairs to a new consistency group when using existing TCz pairs
Registering pairs to an existing consistency group when creating a new TCz pair
Registering pairs to an existing consistency group when using existing TCz pairs
Consistency group requirements
Requirements for a CTG for one primary and one secondary system
Requirements for a CTG for multiple primary and secondary systems
Assigning pairs to a consistency group
Assigning pairs belonging to one primary system and secondary system
Assigning pairs belonging to multiple primary and secondary systems
Using a new CTG
Using an existing CTG
Split behaviors for pairs in a CTG
Host access after split
Pair status before and after a split operation
Resynchronizing and removing pairs using Business Continuity Manager
Error reporting communications
Sharing TrueCopy for Mainframe volumes
Volume types that can be shared with TrueCopy for Mainframe
Dynamic Provisioning for Mainframe
ShadowImage for Mainframe
Configurations with ShadowImage for Mainframe P-VOLs
Configurations with ShadowImage for Mainframe S-VOLs
Status reporting and data currency
ATTIME suspend function for ShadowImage for Mainframe combine with TrueCopy for Mainframe
Requirements for the ATTIME suspend function
ATTIME suspend function operating specifications
Operation flow
Issues when using the ATTIME suspend function
Universal Replicator for Mainframe
Virtual LVI
Soft Fence
Volume Migration
Restrictions for using a TrueCopy for Mainframe volume as a Volume Migration volume
Volume Retention Manager
3DC configuration with PPRC multi-target
TCMF multi-target mainframe system function
Configuring PPRC multi-target
Creating an MTIR pair that was not created automatically
Pair operability in a PPRC multi-target configuration
Configuring PPRC cascade
Changing PPRC cascade back to PPRC multi-target
Pair operability in a PPRC cascade configuration
Interoperability of PPRC multi-target with other functions
Interoperability of PPRC multi-target with Universal Replicator for Mainframe
Interoperability of PPRC multi-target with ShadowImage for Mainframe
Interoperability with Compatible FlashCopy V2
TrueCopy for Mainframe configuration and pair creation
Defining port attributes
Adding remote connections
Setting the remote replication options
Changing the SCP time
Creating pairs
Maintaining the TCz system
Monitoring pair status and license capacity
How pair status changes
Pair status definitions
Split types
System behavior
Obtaining the TrueCopy operation data and I/O statistics
Monitoring TCz pair synchronization rate
Splitting pairs
Resynchronizing pairs
Deleting pairs
Changing P-VOL fence level, copy pace, and timestamp transfer
Forcibly deleting pairs
Managing power-off for storage systems and network devices
How powering off for a planned outage affects primary and secondary systems
Planned outage of the primary system
Planned outage of the secondary system or remote path
Planned outage of both primary and secondary systems
Monitoring and maintaining remote connections and paths
Remote path status
Configuring additional remote paths
Changing remote connection options
Deleting remote paths
Adding SSIDs on the secondary system
Deleting SSIDs on the secondary system
Deleting remote connections
ICKDSF Considerations for TCz Volumes
Running ICKDSF on a TCz P-VOL
Running ICKDSF on a TCz S-VOL
Data migration
Overview of migration using TrueCopy for Mainframe
Migrating data
Migrating data using HyperSwap
Disaster recovery
Disaster recovery overview
Sense information shared between sites
File and database recovery
CSUSPEND/QUIESCE TSO command
IEA494I system console message
Switching operations to the secondary site
Switching operations to the secondary site by deleting pairs
Switching operations to the secondary site by not deleting pairs
Checking S-VOL consistency with the P-VOL
Transferring operations back to the primary site
Transferring operations back to the primary site if pairs were deleted
Transferring operations back to the primary site if pairs were not deleted
Disaster recovery from the primary site (PPRC multi-target) by incremental resync
Disaster recovery from primary site (PPRC cascade)
Troubleshooting TrueCopy for Mainframe
General troubleshooting
Remote path status problems
Split pair problems
SSB codes for TrueCopy for Mainframe
SSB2 error codes when SSB1 = 2E31, B901, B90A, B90B, B912, D004
SSB2=B992 error codes when SSB1 = B901 or B90A
Service information messages (SIMs)
Pinned track recovery
Pair operations using PPRC
Overview of PPRC commands
Options not supported by PPRC
Requirements, restrictions, and notes
Conventions used in TSO commands
CESTPATH command
I/O control after failure with CGROUP FREEZE/RUN
CGROUP FREEZE/RUN requirements
Pair status before and after CGROUP FREEZE/RUN
Using CGROUP
Command sequence example
Other TSO commands used with CGROUP
Example output for CQUERY
IEA494I and IEA491E console messages
IEA494I message
IEA491E message
IEA075I message
IEA498I message
Storage system response characteristics to failure conditions
GDPS and TrueCopy for Mainframe features
User interface support for TrueCopy for Mainframe
Configuration commands and options
Pair operation commands and options
Monitoring commands and options
Maintenance commands and options
Parameter range for CCI options

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