Business Continuity Manager User Guide

Version: 10.1.x
Audience: anonymous
Part Number: MK-94RD247-53
Published: 2026-05-04

Overview of Business Continuity Manager
Why use Business Continuity Manager?
Products that Business Continuity Manager can control
Managing storage systems by using the volume information on a host
Remote copy pair operations
Grouping to simplify copy pair operations
Copy groups
Consistency groups
Open/MF consistency groups
Copy group containers
Extended consistency groups
Consistency times and consistency delta values
Copy type terminology
Data center configurations
2DC configuration
3DC Cascade (TCxUR) configuration
3DC Cascade (URxUR) configuration
3DC Multi-Target (TCxUR) configuration
3DC Multi-Target (URxUR) configuration
3DC Multi-Target (TCxTC) configuration
Delta Resync configuration
2DC configuration with HyperSwap and Universal Replicator
4x4 configuration
4x4x4 Cascade configuration
4x4x4 Delta Resync configuration
FlashCopy linkage configuration
3DC Multi-Target configuration (PPRCxPPRC) with Universal Replicator
Business Continuity Manager functions
Required firmware for each functionality
Methods for issuing commands to Gen'ed volumes
Storage system identification
Setting up Business Continuity Manager
Business Continuity Manager with replication products
Storage system settings and copy group definitions
Replication products and data center configurations
2DC configuration
3DC configuration
2DC configuration with HyperSwap and Universal Replicator
4x4 configuration
4x4x4 Cascade configuration
4x4x4 Delta Resync configuration
FlashCopy linkage configuration
Multi-Site Multi-Region (4DCz) configuration
Sample Replication product combinations
Understanding copy group operations
Configuration for copy groups used by Business Continuity Manager
Copy group operation commands
Using CLI commands to obtain status
Copy pair status transitions
Status monitoring for copy groups
Understanding Business Continuity Manager functions
Remote DKC Control function
Overview of the Remote DKC Control function
Minimizing CLI command execution time
Disaster recovery support
Reverse Resync
TrueCopy Consistency Preservation
Operational testing
Copy group configuration check
Consistency check between copy group definitions and copy pair configurations
Consistency check between copy group definitions
Copy group definition file generation using CSV files
Generating a copy group definition file
Generating CSV files
Updating a copy group definition file
SMS storage group import
Importing storage group information
Preparing to use SMS storage group definitions
SMS list output function
Time-specified suspensions
NORMAL ATTIME Suspend
UR ATTIME Suspend
TC ATTIME Suspend
Differences in functionality between ATTIME Suspend functions
Acquisition of volume information
Local scan
Remote scan
NG scan
Logical path control
Inter-control unit logical paths
Inter-disk controller logical paths
Monitoring events and errors
Access control
Basic access control
Extended access control
Extended access control type
How to set extended access control functions
Examples of using the access control function
Example of granting all access permissions to specific users
Access control for copy groups
Access control for both copy groups and specific commands
Access control for specific commands
Example of operating using the REVERSE RESYNC protection function
Automatic pairing
Importing copy group definitions
Preparing for operation
Preparation overview
Specifying the BCM log output destination
Setting up storage systems
Settings in the Set Defaults panel
Configuration file prefix
Device address domain ID
Method to allocate a configuration file
Creating configuration files
Overview of configuration files
Required settings for configuration files
Preparing the configuration files on each site
Creating configuration files in a batch
Creating configuration files for the Remote DKC Control function
Creating a copy group definition file
Changing configuration files
Acquiring volume information
Acquiring Gen'ed volume information of the local site
Acquiring Non Gen'ed volume information of the local site
Acquiring volume information of other sites
Setting dummy device numbers and dummy subchannel set IDs
Defining a logical path
Establishing a logical path
Establishing an inter-control unit logical path
Verifying and modifying port information from a storage system
Verifying and modifying the secondary SSID from a storage system
Establishing a logical path in the reverse direction
Deleting a logical path
Deleting or changing a physical path
Defining a journal group with path group IDs
Setting up the Remote DKC Control function environment
Procedure for setting up a Remote DKC Control function environment
Prerequisite conditions for defining a Remote DKC Control function environment
Configuring routes and command device lines
Defining the route list
Registering a command device
Deleting command devices
Creating an inter-control unit logical path dedicated to the command device
Configuration definition for using the TrueCopy Consistency Preservation
Environment definition for using the Reverse Resync
Using the Reverse Resync from the primary site and one or more other sites
Using the Reverse Resync only from the primary site
Configuring an environment to use Non Gen'ed volumes
Preparing the hardware for NG scans
Preparing the configuration files for NG scans
Notes on updating the microprogram of a storage system
Defining a configuration
Defining a 2DC configuration
Configuration example
Preparing the hardware for a 2DC configuration
Preparing the configuration files for a 2DC configuration
Defining a 2DC configuration to be used at the primary site
Defining a 2DC configuration to be operated at the secondary site
Defining a 3DC Cascade (TCxUR) configuration
3DC Cascade (TCxUR) configuration example
Preparing the hardware for a 3DC Cascade (TCxUR) configuration
Preparing the configuration files for a 3DC Cascade (TCxUR) configuration
Definition procedure for a 3DC Cascade (TCxUR) configuration
Defining a 3DC Cascade (URxUR) configuration
3DC Cascade (URxUR) configuration example
Preparing the hardware for a 3DC Cascade (URxUR) configuration
Preparing the configuration files for a 3DC Cascade (URxUR) configuration
Definition procedure for a 3DC Cascade (URxUR) configuration
Defining a 3DC Multi-Target (TCxUR) configuration
3DC Multi-Target (TCxUR) configuration example
Preparing the hardware for a 3DC Multi-Target (TCxUR) configuration
Preparing the configuration files for a 3DC Multi-Target (TCxUR) configuration
Definition procedure for a 3DC Multi-Target (TCxUR) configuration
Defining a 3DC Multi-Target (URxUR) configuration
3DC Multi-Target (URxUR) configuration example
Preparing the hardware for a 3DC Multi-Target (URxUR) configuration
Preparing the configuration files for a 3DC Multi-Target (URxUR) configuration
Definition procedure for a 3DC Multi-Target (URxUR) configuration
Defining a 3DC Multi-Target (TCxTC) configuration
3DC Multi-Target (TCxTC) configuration example
Preparing the hardware for a 3DC Multi-Target (TCxTC) configuration
OS setting items
Preparing the configuration files for a 3DC Multi-Target (TCxTC) configuration
Defining a Delta Resync configuration
Delta Resync configuration example
Preparing the hardware for a Delta Resync configuration
Preparing the configuration files for a Delta Resync configuration
Definition procedure for a Delta Resync configuration
Copy pair status transitions for Delta Resync pairs
Defining a 2DC configuration with HyperSwap and Universal Replicator
HyperSwap configuration example
Preparing the hardware for HyperSwap
Preparing the configuration files for HyperSwap
Definition procedure for HyperSwap
Defining a 4x4 configuration
4x4 configuration example
Preparing the hardware for a 4x4 configuration
Preparing the configuration files for a 4x4 configuration
Definition procedure for a 4x4 configuration
Checking the EXCTG registration status (4x4)
Procedure for deleting a journal group from a CG container with an EXCTG ID
Procedure for replacing the supervisor disk controller
Defining a 4x4x4 Cascade configuration
4x4x4 Cascade configuration example
Preparing the hardware for a 4x4x4 Cascade configuration
Preparing the configuration files for a 4x4x4 Cascade configuration
Definition procedure for a 4x4x4 Cascade configuration
Checking the EXCTG registration status (4x4x4 Cascade)
Defining a 4x4x4 Delta Resync configuration
4x4x4 Delta Resync configuration example
Preparing the hardware for a 4x4x4 Delta Resync configuration
Preparing the configuration files for a 4x4x4 Delta Resync configuration
Definition procedure for a 4x4x4 Delta Resync configuration
Defining a configuration to use the UR ATTIME Suspend function
UR ATTIME Suspend configuration example
Preparing the hardware for UR ATTIME Suspend
Preparing the configuration files for UR ATTIME Suspend
Defining a configuration to use the Open/MF Consistency Preservation function
Open/MF Consistency Preservation configuration example
Preparing the hardware for Open/MF Consistency Preservation
Preparing the configuration files for Open/MF Consistency Preservation
Definition procedure for Open/MF Consistency Preservation
Multi-Site Multi-Region (4DCz) configuration
Multi-Site Multi-Region (4DCz) configuration example
Preparing the hardware for a Multi-Site Multi-Region (4DCz) configuration
Preparing the configuration files for a Multi-Site Multi-Region (4DCz) configuration
Definition procedure for a Multi-Site Multi-Region (4DCz) configuration
Using Business Continuity Manager
Before using copy pairs
Preparing to use the Remote DKC Control function
Specifying the method for issuing commands to Gen'ed volumes
Before executing copy group operation commands
Batch processing for multiple copy pairs
Copy pair operations common to all copy types
Copy pair operations for SI
Copy pair operations for TC
Copy pair operations for UR
Messages output from Business Continuity Manager
Executing the YKLOAD command from a script in a System REXX environment
Notes on creating a copy pair with NOCOPY specified
Using configuration files
Working with scripts
Expanding to REXX variables
Acquiring copy pair status
Creating and dissolving copy pairs
Changing the copy pair status
Monitoring the copy pair status
Checking the copy group configuration
Sample script
Scripts and YKLOAD
Notes on script names
Operating a copy group
Preparing to use a copy group
Starting backup operations
Suspending a copy group
Resynchronizing a copy group
Displaying the copy group status
Performing operations on a specific copy pair within a copy group or on a specific consistency group
Operating a copy group
Creating a copy group
Backing up a copy group
Operational testing
Backup operations using the UR ATTIME Suspend function
Status during normal operations
Obtaining backups
If an error occurs while copy pairs are suspended
Determining the volume to be used for restoration
Setting and cancelling ATTIME Suspension information
Monitoring status and changing configurations in a 3DC Cascade (TCxUR)
Monitoring the copy status
Changing configurations of TC and UR copy groups
Using FlashCopy linkage configurations
Operations in a 2DC configuration linked with FlashCopy
Operations in a 3DC Multi-Target (TCxUR) configuration linked with FlashCopy
Determining the FlashCopy copy status
Operations in a configuration with FlashCopy controlled by the Preserve Mirror
In a 2DC configuration
In a 3DC Cascade (TCxUR) configuration
In a 3DC Multi-Target (TCxUR) configuration
Delta Resync configuration
Using an Open/MF consistency group
Operating an Open/MF consistency group
Resynchronizing an Open/MF consistency group
Notes on excluding storage systems from the devices managed by Business Continuity Manager
Maintenance procedures and procedures for handling failures
Procedure for 2DC configurations
Failover
Failback
Operational testing during failovers and cancelling updates at the secondary site
Notes on failovers and failbacks in a 2DC
Procedure for 3DC Cascade (TCxUR) configurations
When no host exists at the intermediate site
When a host exists at the intermediate site
Procedure for 3DC Cascade (URxUR) configurations
Storage system maintenance at the primary site
Storage system maintenance at the intermediate site
Storage system maintenance at the remote site
Host maintenance at the primary site
Storage system failures with information lost from memory at the primary site
Storage system failures with no information lost from memory at the primary site
Storage system failures with information lost from memory at the intermediate site
Storage system failures with no information lost from memory at the intermediate site
Storage system failures with information lost from memory at the remote site
Storage system failures with no information lost from memory at the remote site
Host failures at the primary site
Path failures between the primary site and intermediate site
Path failures between the intermediate site and remote site
Procedure for 3DC Multi-Target (URxUR) configurations
Storage system maintenance at the primary site
Storage system maintenance at the remote site 1 or 2
Host maintenance at the primary site
Storage system failures with information lost from memory at the primary site
Storage system failures with no information lost from memory at the primary site
Storage system failures with information lost from memory at the primary site and remote site 1
Storage system failures with no information lost from memory at the primary site and remote site 1
Storage system failures with information lost from memory at the remote site 1 or 2
Storage system failures with no information lost from memory at the remote site 1 or 2
Host failures at the primary site when both UR copy pairs can be operated
Host failures at the primary site when only one of the UR copy pairs can be operated
Path failures between the primary site and remote site 1, or the primary site and remote site 2
Procedure for 3DC Multi-Target (TCxTC) configurations
Storage system maintenance at the primary site
Failure recovery procedure for storage systems at the primary site
Procedure for Delta Resync configurations
Storage system maintenance at the primary site
Storage system maintenance at the local site
Storage system maintenance at the remote site
Host maintenance at the primary site
Storage system failures with information lost from memory at the primary site
Storage system failures with no information lost from memory at the primary site
Storage system failures with information lost from memory at the local site
Storage system failures with no information lost from memory at the local site
Storage system failures with information lost from memory at the remote site
Storage system failures with no information lost from memory at the remote site
Host failures at the primary site
Path failures between the primary site and local site
When the Delta Resync cannot be set up or operated successfully
Managing the HOLDTRNS status
When copy pairs do not change to the HOLD status
Managing the HOLDER status
Managing the NODELTA status
If copy group containers contain copy pairs of mixed pair statuses
Ensuring successful completion of Delta Resync in advance
Procedure for 2DC configurations with HyperSwap and Universal Replicator
Operation startup procedure
Primary storage system maintenance
Local storage system maintenance
Remote storage system maintenance
Primary host maintenance
Primary storage system failures with information lost from memory
Primary storage system failures with no information lost from memory
Local storage system failures with information lost from memory
Local storage system failures with no information lost from memory
Remote storage system failures with information lost from memory
Remote storage system failures with no information lost from memory
Primary host failures
Path failures between the primary storage system and local storage system
Procedure for 4x4x4 Cascade configurations
Storage system maintenance at the primary site
Storage system maintenance at the intermediate site
Storage system maintenance at the remote site
Host maintenance at the primary site
Storage system failures with information lost from memory at the primary site
Storage system failures with no information lost from memory at the primary site
Storage system failures with information lost from memory at the intermediate site
Storage system failures with no information lost from memory at the intermediate site
Storage system failures with information lost from memory at the remote site
Storage system failures with no information lost from memory at the remote site
Host failures at the primary site
Path failures between the primary site and intermediate site
Procedure for 4x4x4 Delta Resync configurations
Storage system maintenance at the primary site
Storage system maintenance at the local site
Storage system maintenance at the remote site
Host maintenance at the primary site
Storage system failures with information lost from memory at the primary site
Storage system failures with no information lost from memory at the primary site
Storage system failures with information lost from memory at the local site
Storage system failures with no information lost from memory at the local site
Storage system failures with information lost from memory at the remote site
Storage system failures with no information lost from memory at the remote site
Host failures at the primary site
Path failures between the primary site and local site
Procedure for configurations that combine 3DC Multi-Target (TCxTC), 4x4, and 3DC Multi-Target (TCxUR) configurations
Storage system maintenance at the primary site
Storage system failures at the primary site
Procedure for Multi-Site Multi-Region (4DCz) configurations
Storage system maintenance at the primary site (switching operation to the secondary site)
Storage system maintenance at the local site 1 (switching to a Delta Resync configuration at the secondary site)
Storage system failures at the primary site (resuming operation at the secondary site)
Local site 1 storage system failures (resume operation in a Delta Resync configuration at the secondary site)
Using the ISPF panels
Acquiring volume information
Local scan procedure
Performing a local scan at the primary site
Performing a local scan at the secondary site
Transferring a disk configuration definition file from the secondary site to the primary site
NG scan procedure
Defining a path set
Defining the inter-disk controller logical path set
Adding a logical path to a path set
Allocating physical paths to logical paths
Defining the inter-control unit logical path set
Establishing a logical path
Defining a route list
Defining a route list for a 2DC configuration (forward direction)
Defining a route list for a 2DC configuration (reverse direction)
Defining a route list for a 3DC Multi-Target (TCxUR) configuration
Defining a route list ID
Defining the primary site storage system (Primary to Local)
Defining the local site storage system (Primary to Local)
Defining the primary site storage system (Primary to Remote)
Defining the remote site storage system (Primary to Remote)
Defining the command device line (Primary to Local)
Defining the command device line (Primary to Remote)
Defining multiple command device lines
Registering a command device in a storage system
Remote scan procedure
Specifying a route list ID
Performing a remote scan
Assigning a dummy device number
Changing dummy device numbers
Defining a copy group
Defining the copy group ID and copy group attributes (UR)
Defining the copy group ID and copy group attributes (SI)
Defining the copy group ID and copy group attributes (TC)
Defining a copy group by using multiple subchannel sets
Creating a copy group definition
Adding a copy pair to a copy group by using the automatic pairing function
Specifying a dummy subchannel set ID
Creating a copy group definition
Adding a copy pair to a copy group by using automatic assignment of dummy device numbers
Defining a copy group container
Defining the copy group ID and copy group attributes
Adding a consistency group
Changing a copy group that is not a CG container to one that is
Changing a copy group that is a CG container to one that is not
Defining an EXCTG
Saving settings
Defining an Open/MF consistency group
Loading a copy group
Suspending a copy group
Setting the Open/MF Consistency attribute to a copy group definition
Loading a copy group after changing its definition
Resynchronizing a copy group
Operating copy groups
Loading a copy group
Making a Universal Replicator copy pair (SIMPLEX to DUPLEX)
Suspending a Universal Replicator copy pair
Making a ShadowImage copy pair (SIMPLEX to DUPLEX)
Suspending a ShadowImage copy pair
Resynchronizing a Universal Replicator copy pair
Resetting the soft fence
PPRC copy pair import function
Importing PPRC copy pairs
Preparing the hardware
Preparing the software
Importable copy types and generation units of copy groups
Parameters of PPRC commands
Parameters of the pair creation command (CESTPAIR)
Parameters of the pair suspend command (CSUSPEND)
Parameters of the pair resynchronization command (CESTPAIR)
Defining copy groups by importing PPRC copy pair information
Importing PPRC copy pairs
Importing Multiple Target PPRC copy pairs
Migrating PPRC copy pairs to Business Continuity Manager copy pairs
Preparing to migrate
Migrating PPRC copy pairs
Restoring Business Continuity Manager copy pairs to PPRC copy pairs
Examples of copy group definitions for PPRC copy pairs
Defining copy groups for PPRC TC copy pairs
Defining copy groups for only PPRC SI copy pairs
Defining copy groups for PPRC TC and SI copy pairs
Defining copy groups for Multiple Target PPRC TrueCopy copy pairs
Automatic operation using BCM Monitor
Overview of the BCM Monitor functions
Starting and stopping BCM Monitor
Starting BCM Monitor
Stopping BCM Monitor
Forcibly stopping BCM Monitor
Return codes for BCM Monitor
Operator commands available in BCM Monitor
DISPLAY command
REPORT command
SET command
SLEEP command
WAKEUP command
Troubleshooting procedures provided by BCM Monitor
Logs collected by BCM Monitor
When a BCM Monitor instance cannot be started
When a BCM Monitor instance has started
BCM Monitor operation examples
Backup operation example
Example of failure monitoring
Troubleshooting
Types of failure and their countermeasures
Error notification
Performance monitor
Trace output method
Collecting logs
Log types
Setting the BCM log output destination
System logger service setup
BCM log output method
BCM log data output tool
ISPF log data
CLI command-execution logs
HyperSwap completion detection using Basic Hyperswap
Recovering from a failure
Recovering a command device after an LDEV blockage
Recovering a command device after a power outage
Recovering a log dataset after logs are full
Performing operations when a failure occurs for a volume in a copy group
Recovering from a Universal Replicator failure
What to do when an error occurs while creating a configuration file (ISPF panels)
What to do when an error occurs while creating a configuration file (YKBTSCAN)
What to do when an error occurs in the copy group definition file generation function using CSV files
What to do if an error occurs in creating configuration files when a local scan is performed or a route list is defined
What to do if an error occurs when installation is performed by using a z/OSMF workflow
What to do when an error occurs because an S-VOL is online
Identifying the device number of the S-VOL that is online
Identifying the host on which the S-VOL is online
Taking the S-VOL offline
Configurations for which the same command device is shared from multiple hosts
Configurations for which the same command device is shared from multiple hosts
Configuration for which the same command device cannot be shared from multiple hosts
Configuration for controlling a command device in the forward and reverse directions
Configuration for which another host uses a command device in a route
Configuration for N:1 communication between command devices in multiple storage systems and a command device
Conventions in syntax explanations
Conventions in syntax explanations
Glossary
Glossary

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