HP XP P9500, P9000 for Business Continuity Manager Software User's Manual

P9000 for Business Continuity Manager
Software User Guide

Abstract

This manual describes how to use the following program products: HP StorageWorks P9000 for Business Continuity Manager
Software, HP StorageWorks P9000 for Business Continuity Manager Extended CT Group Software, and HP StorageWorks
P9000 for Business Continuity Manager Continuous Access Journal 4x4 Extended CT Software.

HP Part Number: T5253-96059
Published: October 2011
Edition: Eleventh

© Copyright 2007, 2011 Hewlett-Packard Development Company, L.P.

Confidential computer software. Valid license from HP required for possession, use or copying. Consistent with FAR 12.211 and 12.212, Commercial
Computer Software, Computer Software Documentation, and Technical Data for Commercial Items are licensed to the U.S. Government under
vendor's standard commercial license.

The information contained herein is subject to change without notice. The only warranties for HP products and services are set forth in the express
warranty statements accompanying such products and services. Nothing herein should be construed as constituting an additional warranty. HP shall
not be liable for technical or editorial errors or omissions contained herein.

Acknowledgments

Microsoft, Windows, and Windows XP are U.S. registered trademarks of Microsoft Corporation.

Hitachi and Universal Replicator are registered trademarks of Hitachi, Ltd.

ShadowImage and TrueCopy are registered trademarks of Hitachi, Ltd. and Hitachi Data Systems Corporation.

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Revision History

DescriptionDateEdition

This document revision applies to Business Continuity Manager version 5.1 and higher.September 2007First

This document revision applies to Business Continuity Manager version 5.5 and higher.January 2008Second

This document revision applies to Business Continuity Manager version 6.00 and higher.June 2008Third

This document revision applies to Business Continuity Manager version 6.10 and higher.December 2008Fourth

This document revision applies to Business Continuity Manager version 6.20 and higher.June 2009Fifth

This document revision applies to Business Continuity Manager version 6.30 and higher.December 2009Sixth

This document revision applies to Business Continuity Manager version 6.40 and higher.June 2010Seventh

This document revision applies to Business Continuity Manager version 6.50 and higher.October 2010Eighth

This document revision applies to Business Continuity Manager version 6.50 and higher.November 2010Ninth

This document revision applies to Business Continuity Manager version 6.60 and higher.May 2011Tenth

This document revision applies to Business Continuity Manager version 6.60 and higher.October 2011Eleventh

Contents

1 Overview of HP P9000 for Business Continuity Manager Software..................16

Why use Business Continuity Manager?....................................................................................16

Communication with HP P9000 Command View Advanced Edition Suite Software..........................17

Products that can be controlled by Business Continuity Manager...................................................18

Business Copy for Mainframe (BC Z)....................................................................................19

Continuous Access Synchronous for Mainframe (Cnt Ac-S Z)....................................................19

Continuous Access Asynchronous for Mainframe (Cnt Ac-A).....................................................20

Continuous Access Journal for Mainframe (Cnt Ac-J Z)............................................................20

Remote volume operations.......................................................................................................21

Grouping to simplify volume operations.....................................................................................22

Copy groups.....................................................................................................................22

Consistency groups............................................................................................................23

Journal groups..............................................................................................................24

Open/MF Consistency Groups.......................................................................................25

Copy group containers.......................................................................................................25

Extended Consistency Groups.........................................................................................26

Terminology by Copy Type..................................................................................................27

Data Center Configurations......................................................................................................27

2DC Configuration.............................................................................................................27

3DC Cascade Configuration...............................................................................................28

3DC Multi-Target Configuration...........................................................................................28

3DC Multi-Target Configuration with the Delta Resync Function.................................................28

2DC Configuration with HyperSwap and Continuous Access Journal........................................29

4x4 Configuration.............................................................................................................29

4x4x4 Cascade Configuration............................................................................................30

4x4x4 Multi-Target Configuration.........................................................................................31

Compatible FlashCopy linkage configuration.........................................................................32

Functions Supporting the Automatic Operation (BCM Monitor)......................................................32

Disaster Recovery Functions.................................................................................................33

Operational testing function................................................................................................33

Functions that Support Copy Group Definitions and Operations...............................................33

Specified Time Suspend functions.........................................................................................34

Functions for Acquiring Volume Information...........................................................................34

Logical Path Control function................................................................................................34

For monitoring events and errors..........................................................................................34

Functionalities Dependent on the Storage System........................................................................35

Storage System Identification ...................................................................................................38

Preparing to set up Business Continuity Manager........................................................................39

2 Business Continuity Manager with replication products..................................41

Storage System Settings and Copy Group Definitions..................................................................41

Replication products and data center configurations....................................................................42

The 2DC configurations......................................................................................................42

The 3DC configurations......................................................................................................43

The 3DC Cascade configuration.....................................................................................44

The 3DC Multi-Target configuration..................................................................................44

Operations during local or remote site storage system maintenance or a failure.....................45

Operations during primary site host maintenance or a host failure.......................................46

The Delta Resync configuration........................................................................................47

2DC Configuration with HyperSwap and Continuous Access Journal........................................48

The 4x4 configuration........................................................................................................50

The 4x4x4 Cascade configuration.......................................................................................51

Contents 3

Operations during a host failure at the primary site...........................................................52

Operations during a storage system failure at the primary site.............................................53

The Compatible FlashCopy linkage configuration...................................................................54

Overview of functions....................................................................................................54

Prerequisites for the Compatible FlashCopy linkage configuration........................................55

Sample replication product combinations...................................................................................57

Understanding Copy Group Operations....................................................................................58

Configuration for Copy Groups Used by Business Continuity Manager......................................59

Configuration Patterns that Allow Pair Creation..................................................................59

Configuration Patterns that Prohibit Pair Creation...............................................................60

Copy Group Operation Commands.....................................................................................62

Using CLI Commands to Obtain Status.................................................................................63

Meaning of copy pair status...........................................................................................63

Using the YKQRYDEV command to obtain the copy pair status of specified volumes...............66

Using the YKQUERY command to obtain the copy pair status for each copy pair...................69

Acquiring Copy Pair information from one site of a Copy Pair.............................................71

Copy Pair Status Transitions.................................................................................................71

Status Monitoring for Copy Groups......................................................................................73

Status Monitoring by Copy Pair.......................................................................................73

Status Monitoring by Volume..........................................................................................74

3 Understanding Business Continuity Manager functions..................................75

Remote DKC Control Function...................................................................................................75

Functions That Support Disaster Recovery...................................................................................77

The Reverse Resync Function................................................................................................77

The Continuous Access Synchronous Consistency Preservation Function.....................................78

The Operational Testing Function..............................................................................................79

Functions That Support Copy Group Definitions and Operations...................................................80

The Copy Group Configuration Check Function......................................................................81

Copy Group Definition File Generation Function Using CSV Files..............................................81

SMS Storage Group Import Function.....................................................................................82

The Specified Time Suspend Function........................................................................................83

NORMAL ATTIME Suspend Function.....................................................................................83

Performing a Backup Using the NORMAL ATTIME Suspend Function (for Cnt Ac-A)................84

Performing a Backup Using the NORMAL ATTIME Suspend Function (for BC Z).....................84

When Suspensions are Executed (NORMAL ATTIME Suspend Function)................................85

NORMAL ATTIME Suspend Function: Recommendations for Backing Up Multiple

Generations.................................................................................................................85

CAJ ATTIME Suspend Function.............................................................................................86

Performing a Backup Using the CAJ ATTIME Suspend Function (for Cnt Ac-J Z)......................86

Relationship Between the ATTIME Suspend Time and Timeout Times.....................................87

When suspensions are executed (CAJ ATTIME Suspend Function)........................................87

CAJ ATTIME Suspend Function: Recommendations for Backing Up Multiple Generations........89

Differences in functionality between NORMAL ATTIME and CAJ ATTIME Suspend function..........89

Functions that Acquire Volume Information.................................................................................90

Local Scan........................................................................................................................90

Remote Scan.....................................................................................................................90

NG Scan..........................................................................................................................91

Volumes Used for NG Scans...........................................................................................92

Copy Types for Which a Copy Group Including Non Gen'ed Volumes Can Be Defined..........92

Operating a Copy Group Including Non Gen'ed Volumes..................................................94

Notes on Executing an NG Scan....................................................................................95

The Logical Path Control Function..............................................................................................95

Inter-Control Unit Logical Paths.............................................................................................96

Inter-Disk Controller Logical Paths.........................................................................................97

4 Contents

Function That Monitors Event and Errors.....................................................................................98

4 Preparing to use Business Continuity Manager.............................................99

Preparation overview..............................................................................................................99

Specifying the Business Continuity Manager Log output destination.............................................100

Setting up Storage Systems....................................................................................................100

Settings in the Set Defaults panel............................................................................................101

Specifying the Device Address Domain ID...........................................................................101

Setting a prefix for configuration files..................................................................................102

Creating configuration files....................................................................................................102

Overview of configuration files..........................................................................................102

Required settings for configuration files...............................................................................105

Preparing the configuration files on each site.......................................................................105

Acquiring volume information (preparations)............................................................................106

Performing a local scan to acquire volume information..........................................................106

Performing an NG Scan (on a Non-Gen'ed Volume) to acquire device configuration

information.....................................................................................................................106

Preparing the hardware (NG Scan)...............................................................................106

Preparing the configuration files (NG Scan)....................................................................107

Performing a remote scan to acquire remote storage system information..................................107

Specifying a Route List ID.............................................................................................109

Performing a Remote Scan............................................................................................110

Assigning a Dummy Device Number..............................................................................110

Creating a logical path.........................................................................................................111

Establishing a logical path................................................................................................112

Establishing an Inter-Control Unit logical path......................................................................113

Acquiring path information from a storage system................................................................113

Checking the Prerequisite Conditions for Acquiring a Port Number....................................114

Establishing a logical path in the reverse direction................................................................115

Deleting a logical path.....................................................................................................115

Setting up the Remote DKC Control Function environment...........................................................115

Configuring routes...........................................................................................................116

Procedures for configuring routes...................................................................................116

Example of configuring routes.......................................................................................117

Defining the route list........................................................................................................118

Route List Settings........................................................................................................119

Registering a command device..........................................................................................119

Registering a command device in the forward direction....................................................119

Command device setup procedure.................................................................................119

Registering a command device in the reverse direction.....................................................120

Command device definition rules...................................................................................120

Deleting command devices................................................................................................120

Deleting Command Devices Registered in a Route List......................................................121

Deleting Command Devices Not Registered in a Route List................................................121

Creating an Inter-Control Unit Logical Path dedicated to the command device..........................122

Supporting a Cnt Ac-S Z or Cnt Ac-A Z copy group configuration......................................122

Supporting a Continuous Access Journal for Mainframe copy group configuration...............123

Preparing to use the Remote DKC Control function................................................................123

Configuration definition for using the Continuous Access Synchronous Consistency Preservation

function...............................................................................................................................123

Defining a copy group.....................................................................................................124

Environment definition for using the Reverse Resync function.......................................................124

When the Reverse Resync function is used from the primary site and one or more other sites......125

When the Reverse Resync function is used only from the primary site.......................................125

Contents 5

5 Configuration Definitions.........................................................................126

Defining a 2DC configuration................................................................................................126

A 2DC configuration example...........................................................................................126

Preparing the hardware (2DC configuration).......................................................................127

Preparing the configuration files (2DC configuration)............................................................128

Preparing the configuration files (2DC configuration)............................................................129

Flow of configuration definitions (2DC configuration)............................................................129

Secondary site with a host............................................................................................129

Secondary site without a host.......................................................................................130

Definition procedure (2DC configuration)............................................................................131

Defining a 3DC Cascade configuration...................................................................................135

A 3DC Cascade configuration example..............................................................................136

Preparing the hardware (3DC Cascade configuration)..........................................................136

Preparing the Configuration Files (3DC Cascade Configuration).............................................137

Preparing the configuration files (3DC Cascade configuration)...............................................138

Definition procedure (3DC Cascade configuration)...............................................................139

Steps on the Primary Host (3DC Cascade Configuration)..................................................140

Steps on the Secondary Host (3DC Cascade Configuration).............................................143

Defining a 3DC Multi-Target configuration...............................................................................148

A 3DC Multi-Target configuration example..........................................................................148

Preparing the hardware (3DC Multi-Target configuration)......................................................149

Preparing the Configuration Files (3DC Multi-Target Configuration).........................................150

Preparing the Configuration Files (3DC Multi-Target Configuration).........................................151

Definition Procedure (3DC Multi-Target Configuration)...........................................................152

Performing a Scan (3DC Multi-Target Configuration)........................................................153

Settings for Operations on the Primary Site (3DC Multi-Target Configuration)......................153

Settings for Operations on the Local Site (3DC Multi-Target Configuration)..........................155

Settings for Operations on the Remote Site (3DC Multi-Target Configuration).......................157

Creating a Copy Group (3DC Multi-Target Configuration)................................................159

Defining a Delta Resync Configuration.....................................................................................160

Configuration Example (Delta Resync configuration)..............................................................160

Preparing the Hardware (Delta Resync Configuration)...........................................................161

Preparing the Configuration Files (Delta Resync Configuration)...............................................162

Preparing the Configuration Files (Delta Resync Configuration)...............................................164

Definition Procedure (Delta Resync Configuration).................................................................166

Creating a Disk Configuration Definition File...................................................................167

Settings on the Primary Site..........................................................................................167

Settings on the Local Site (Delta Resync Configuration).....................................................169

Settings on the Remote Site (Delta Resync Configuration)..................................................171

Creating a Copy Group (Delta Resync Configuration)......................................................173

Copy pair status transitions for Delta Resync pairs................................................................174

Defining a 2DC configuration with HyperSwap and Cnt-Ac J Z ..................................................176

Configuration example (HyperSwap)..................................................................................176

Preparing the hardware (HyperSwap).................................................................................177

Preparing the Configuration Files (HyperSwap)....................................................................178

Preparing the configuration files (HyperSwap)......................................................................179

Definition procedure (HyperSwap)......................................................................................181

Performing a scan.......................................................................................................181

Setting up for performing operations at the primary site...................................................182

Setting up for performing operations at the secondary site................................................185

Making a copy group..................................................................................................186

Defining a 4x4 configuration.................................................................................................187

A 4x4 configuration example............................................................................................187

Preparing the hardware (4x4 configuration)........................................................................190

6 Contents

Preparing the Configuration Files (4x4 Configuration)...........................................................192

Preparing the configuration files (4x4 configuration).............................................................192

Definition procedure (4x4 configuration).............................................................................193

Defining a new 4x4 configuration.................................................................................194

Expanding to a 4x4 configuration by adding storage systems to a 2DC configuration..........195

Changing to a 4x4 Configuration Without Changing the Existing Storage System

Configuration.............................................................................................................196

Adding a new journal group to a 4x4 configuration........................................................197

Adding an Existing Journal Group to a 4x4 Configuration................................................198

Checking the Registration Status of EXCTG (4x4 Configuration)..............................................199

EXCTG Registration when the Copy Operation is Performed in the Forward Direction...........199

EXCTG Registration when the Copy Operation is Performed in the Reverse Direction............200

Deleting a journal group from a copy group container with EXCTG ID specified (4x4

configuration)..................................................................................................................201

Defining a 4x4x4 Cascade Configuration................................................................................201

Configuration example (4x4x4 Cascade)............................................................................202

Preparing Hardware (4x4x4 Cascade)...............................................................................203

Preparing the Configuration Files (4x4x4 Cascade)..............................................................204

Definition procedure (4x4x4 Cascade)...............................................................................206

Defining a new 4x4x4 Cascade configuration................................................................207

Expanding to a 4x4x4 Cascade Configuration by Adding a Continuous Access Journal Z

Copy Group to a Continuous Access Synchronous Z Copy Group......................................216

Expanding to a 4x4x4 Cascade Configuration by Adding a Series of Storage Systems to a

3DC Cascade Configuration........................................................................................225

Checking the registration status of the EXCTG......................................................................230

Defining a configuration so that the CAJ ATTIME Suspend function can be used............................230

Configuration example (CAJ ATTIME suspend).....................................................................230

Preparing the hardware (CAJ ATTIME Suspend)...................................................................231

Preparing the software (CAJ ATTIME Suspend).....................................................................232

Defining a configuration so that the Open/MF Consistency Preservation function can be used........234

Configuration example (Open/MF Consistency)...................................................................234

Preparing the hardware (Open/MF Consistency).................................................................235

Preparing the software (Open/MF Consistency)...................................................................236

Definition procedure (Open/MF Consistency)......................................................................236

Preparing at the Open System Side...............................................................................237

Definition Procedure for Business Continuity Manager......................................................237

When Defining a New Copy Group.........................................................................237

When Assigning an Attribute to a Existing Copy Group...............................................237

When Disabling an Attribute of an Existing Copy Group.............................................237

6 Importing copy groups............................................................................239

Generating a copy group definition file by using CSV files.........................................................239

Generating a copy group definition file (CSV file for copy group definition).............................239

Required files (CSV file for copy group definition)............................................................239

Attributes to be defined in a base copy group definition file..............................................240

CSV Copy Group Rules................................................................................................241

Generation Example (CSV File for Copy Group Definition)................................................243

Example of JCL (for CSV copy group definition)...............................................................244

Generating CSV files for copy group definition....................................................................245

Required files (CSV file for copy group definition)............................................................245

Generation example (CSV file for copy group definition)..................................................245

Example of JCL for CSV file for copy group definition.......................................................246

Updating an existing copy group definition file....................................................................247

Importing definitions for monitoring PPRC copy pairs.................................................................248

Example of a PPRC copy pair configuration.........................................................................248

Contents 7

Preparing the hardware....................................................................................................249

Preparing the software......................................................................................................249

Copy types and generation units for which definitions can be generated.................................249

Supported PPRC commands..............................................................................................249

Generating copy group definition files from the ISPF panel....................................................251

Example of importing PPRC copy pairs...............................................................................252

When monitoring PPRC Cnt Ac-S/Cnt Ac-A copy pairs.....................................................252

When monitoring only PPRC BC Z copy pairs.................................................................252

When monitoring only PPRC Cnt Ac-S Z/BC Z copy pairs.................................................253

Importing SMS storage group definitions.................................................................................254

Preparing to use SMS storage group definitions...................................................................254

Importing storage group information..............................................................................255

Before importing new SMS storage groups................................................................256

Importing new storage group information.......................................................................256

Importing changed storage volume information...............................................................257

About the SMS list output function......................................................................................257

JCL example (SMS storage group definition)...................................................................257

7 Using Business Continuity Manager..........................................................258

Before using copy pairs.........................................................................................................258

Preparing to Use the Remote DKC Control Function...............................................................258

When Executing Copy Group Operation Commands............................................................258

Batch Processing for Multiple Copy Pairs.............................................................................260

Copy Pair Operations Common to All Copy Types................................................................260

Copy Pair Operations for BC Z and Cnt Ac-A......................................................................260

Copy Pair Operations for BC Z..........................................................................................261

Copy Pair Operations for Cnt Ac-S Z..................................................................................261

Copy Pair Operations for Cnt Ac-J Z...................................................................................261

Messages Output from Business Continuity Manager............................................................261

Using configuration files........................................................................................................262

Working with scripts.............................................................................................................262

Expanding to REXX Variables............................................................................................262

Acquiring Copy Pair Status................................................................................................263

Creating and Dissolving Copy Pairs....................................................................................263

Changing the Copy Pair Status..........................................................................................263

Monitoring the Copy Pair Status.........................................................................................263

Checking the copy group configuration...............................................................................263

Sample Script..................................................................................................................263

About Scripts and YKLOAD...............................................................................................264

Operating a copy group.......................................................................................................264

Preparing to Use a Copy Group........................................................................................264

Starting Backup Operations...............................................................................................264

Suspending a Copy Group...............................................................................................264

Resynchronizing a Copy Group.........................................................................................264

Displaying the Status of a Copy Group...............................................................................264

Operating a Copy Group.................................................................................................264

Creating a Copy Group....................................................................................................265

Backing Up a Copy Group...............................................................................................267

Operational Testing..........................................................................................................267

Backup operations using the Cnt Ac-J Z ATTIME Suspend function...............................................268

Status During Normal Operations......................................................................................268

Obtaining Cnt Ac-J Z ATTIME Backups................................................................................269

If an Error Occurs While Copy Pairs Are Suspended.............................................................271

Determining the Volume to Be Used for Restoration...............................................................272

Check whether the Cnt Ac-J Z S-VOL is usable.................................................................272

8 Contents

Check which Business Copy S-VOL generation is usable...................................................272

Setting and Canceling ATTIME Suspension Information.........................................................272

Monitoring status and changing configurations in a 3DC Cascade configuration..........................273

Monitoring the Copy Status...............................................................................................273

When the Cnt Ac-S consistency preservation function is not used.......................................274

When the Cnt Ac-S consistency preservation function is used.............................................275

Changing Configurations of Cnt Ac-S Z and Cnt Ac-J Z Copy Groups.....................................275

Using Compatible FlashCopy linkage configurations.................................................................278

Using the Compatible FlashCopy Linkage Function in a 2DC Configuration.............................278

Compatible FlashCopy Linkage When the Copy Pair Is in the DUPLEX Status.......................279

Compatible FlashCopy linkage using the Preserve Mirror function when the copy pair is in the

DUPLEX status (Continuous Access Synchronous Z)...........................................................280

Compatible FlashCopy Linkage When the Copy Pair Is in the Suspend Status......................282

Using the Compatible FlashCopy Linkage Function in a 3DC Multi-Target Configuration............283

Determining the Compatible FlashCopy Copy Status.............................................................285

How to determine the Compatible FlashCopy copy status.................................................285

Example of a script that determines the Compatible FlashCopy copy status.........................285

Monitoring PPRC copy pairs...................................................................................................286

Using an Open/MF consistency group....................................................................................286

Operating an Open/MF consistency group ........................................................................286

Resynchronizing an Open/MF consistency group.................................................................287

8 Maintenance and Troubleshooting Operations...........................................288

Using a 2DC Configuration...................................................................................................288

Failover Procedure...........................................................................................................288

Failback Procedure..........................................................................................................290

Notes on Failovers and Failbacks in a 2DC Configuration.....................................................291

Notes on operating copy pairs.....................................................................................292

Notes on dissolving copy pairs.....................................................................................292

Using a 3DC Cascade Configuration......................................................................................293

Failover Procedure...........................................................................................................293

Failback Procedure..........................................................................................................294

Using a Delta Resync Configuration........................................................................................297

Performing Primary Site Storage System Maintenance...........................................................300

Failover for Primary Site Storage System Maintenance......................................................300

Failback to the Primary Site..........................................................................................302

Performing Local Site Storage System Maintenance...............................................................305

Preparing...................................................................................................................306

Recovering.................................................................................................................307

Performing Remote Site Storage System Maintenance............................................................307

Preparing...................................................................................................................308

Recovering.................................................................................................................309

Performing Primary Site Host Maintenance..........................................................................309

Failover for Primary Site Host Maintenance.....................................................................309

Failback to the Primary Site..........................................................................................312

Operating Procedure During a Primary Site Storage System Failure (Volatile)...........................314

Failover.....................................................................................................................315

Failback.....................................................................................................................316

Operating Procedure During a Primary Site Storage System Failure (Nonvolatile).....................321

Failover.....................................................................................................................322

Failback.....................................................................................................................322

Operating Procedure During a Local Site Storage System Failure (Volatile)...............................326

Preparing...................................................................................................................327

Recovering.................................................................................................................327

Operating Procedure During a Local Site Storage System Failure (Nonvolatile).........................330

Contents 9

Operating Procedure During a Remote Site Storage System Failure (Volatile)............................330

Preparing...................................................................................................................330

Recovering.................................................................................................................330

Operating Procedure During a Remote Site Storage System Failure (Nonvolatile)......................333

Preparing...................................................................................................................333

Recovering.................................................................................................................333

Primary Site Host Failure...................................................................................................333

Failover.....................................................................................................................333

Failback.....................................................................................................................336

Operating Procedure During a Path Failure Between the Primary Site Storage System and the

Local Site Storage System..................................................................................................338

Preparing...................................................................................................................339

Recovering.................................................................................................................339

Actions to be Taken When the Delta Resync Function Cannot be Set Up or Operated

Successfully.....................................................................................................................340

Managing the HOLDTRNS Status..................................................................................341

When Copy Pairs Do Not Change to HOLD Status..........................................................342

Managing the HOLDER Status......................................................................................343

If the pair status changes to HOLDER before execution of the command YKRESYNC

DELTAJNL..............................................................................................................343

If the pair status changes to HOLDER after execution of the command YKRESYNC

DELTAJNL..............................................................................................................343

If Pair Status Changes to NODELTA...............................................................................345

About Containers with Pairs of Mixed Pair Statuses..........................................................346

Ensuring Successful Completion of Delta Resync in Advance.............................................346

Using a 2DC configuration with HyperSwap and Continuous Access Journal Z.............................348

Operation Startup Procedure.............................................................................................350

Performing Primary Storage System Maintenance.................................................................351

Failover.....................................................................................................................351

Failback.....................................................................................................................353

Performing Primary Host Maintenance................................................................................356

Failover.....................................................................................................................356

Failback.....................................................................................................................358

Performing Local Storage System Maintenance.....................................................................360

Preparing...................................................................................................................360

Recovering.................................................................................................................360

Performing Remote Storage System Maintenance..................................................................361

Preparing...................................................................................................................361

Recovering.................................................................................................................362

Operating Procedure During a Primary Storage System Failure (Volatile).................................362

Failover.....................................................................................................................363

Failback.....................................................................................................................364

Operating Procedure During a Primary Storage System Failure (Nonvolatile)............................368

Failover.....................................................................................................................368

Failback.....................................................................................................................368

Operating Procedure During a Primary Host Failure..............................................................372

Failover.....................................................................................................................372

Failback.....................................................................................................................374

Operating Procedure During a Path Failure Between the Primary Storage System and the Local

Storage System................................................................................................................376

Preparing...................................................................................................................376

Recovering.................................................................................................................377

Operating Procedure During a Local Storage System Failure (Volatile).....................................377

Preparing...................................................................................................................377

Recovering.................................................................................................................377

10 Contents

Operating Procedure During a Local Storage System Failure (Nonvolatile)...............................379

Operating Procedure During Remote Storage System Failure (Volatile).....................................379

Preparing...................................................................................................................379

Recovering.................................................................................................................379

Operating Procedure During a Remote Storage System Failure (Nonvolatile)............................382

Preparing...................................................................................................................382

Recovering.................................................................................................................382

Using a 4x4x4 Cascade Configuration...................................................................................383

Performing Primary Site Storage System Maintenance...........................................................386

Failover.....................................................................................................................386

Failback.....................................................................................................................387

Performing Intermediate Site Storage System Maintenance.....................................................390

Preparing...................................................................................................................391

Recovering.................................................................................................................392

Performing Remote Site Storage System Maintenance............................................................394

Preparing...................................................................................................................395

Recovering.................................................................................................................396

Performing Primary Site Host Maintenance..........................................................................396

Failover.....................................................................................................................397

Failback.....................................................................................................................398

Operating Procedure During a Primary Site Storage System Failure (Volatile)...........................401

Failover.....................................................................................................................401

Failback.....................................................................................................................402

Operating Procedure During a Primary Site Storage System Failure (Nonvolatile).....................406

Failover.....................................................................................................................407

Failback.....................................................................................................................407

Operating Procedure During an Intermediate Site Storage System Failure (Volatile)...................409

Preparing...................................................................................................................410

Recovering.................................................................................................................412

Operating Procedure During an Intermediate Site Storage System Failure (Nonvolatile).............415

Operating Procedure During a Remote Site Storage System Failure (Volatile)............................416

Preparing...................................................................................................................416

Recovering.................................................................................................................416

Operating Procedure During a Remote Site Storage System Failure (Nonvolatile)......................419

Preparing...................................................................................................................419

Recovering.................................................................................................................420

Operating procedure during a primary site host failure.........................................................420

Failover.....................................................................................................................421

Failback.....................................................................................................................422

Operating Procedure During a Path Failure between the Primary Site Storage System and the

Intermediate Site Storage System........................................................................................424

Preparing...................................................................................................................425

Recovering.................................................................................................................427

9 Using the ISPF panels..............................................................................430

Acquiring volume information.................................................................................................430

Local scan procedure.......................................................................................................430

Scanning a device locally on the primary site (local scan).....................................................430

Scanning a device locally on the secondary site (local scan).................................................434

Transferring a disk configuration definition file from the secondary site to the primary site..........434

NG scan procedure.........................................................................................................435

Creating a path set...............................................................................................................439

Defining the inter-DKC logical path set................................................................................439

Adding a logical path to a path set....................................................................................440

Allocating physical paths to logical paths............................................................................443

Contents 11

Defining the inter-CU logical path set..................................................................................447

Adding a logical path to path set..................................................................................447

Allocating physical paths to logical paths.......................................................................452

Establishing a logical path.....................................................................................................456

Defining a route list...............................................................................................................457

Defining a route list ID......................................................................................................458

Defining the first entry of the route......................................................................................459

Adding an entry (extended route definition).........................................................................463

If the storage system on the secondary site has been scanned...........................................464

Remote scanning of the Storage System on the secondary site from the primary site.............466

Defining the second route.................................................................................................468

Images for route list definitions...........................................................................................468

Registering a command device in a Storage System..................................................................470

Remote scan procedure.........................................................................................................472

Specifying a route list ID...................................................................................................472

Performing a remote scan..................................................................................................473

Assigning a dummy device number....................................................................................474

Changing dummy device numbers.....................................................................................477

Defining a copy group..........................................................................................................477

Defining the copy group ID and copy group attributes (Cnt Ac-J Z).........................................478

Adding the copy pair to the copy group (Cnt Ac-J Z)........................................................480

Defining the copy group ID and copy group attributes (BC)...................................................482

Adding the copy pair to the copy group (BC)..................................................................483

Defining the copy group ID and copy group attributes (CA)...................................................483

Adding the copy pair to the copy group (CA).................................................................484

Defining the copy group ID and copy group attributes (Cnt Ac-A)...........................................484

Adding the copy pair to the copy group (Cnt Ac-A).........................................................485

Defining a copy group container............................................................................................485

Defining the copy group ID and copy group attributes..........................................................486

Adding a C/T group........................................................................................................487

Changing a copy group that is not a copy group container to one that is (adding a C/T

group)............................................................................................................................488

Changing a copy group that is a container to one that is not (deleting a C/T group)................489

Defining an EXCTG..........................................................................................................489

Saving settings................................................................................................................492

Defining an Open/MF consistency group................................................................................492

Loading a copy group......................................................................................................493

Suspending a copy group.................................................................................................494

Changing a copy group definition (setting the Open/MF Consistency attribute).......................495

Loading a copy group after changing its definition...............................................................496

Resynchronizing a copy group...........................................................................................497

Operating copy groups.........................................................................................................500

Loading a copy group......................................................................................................501

Making a Cnt-Ac J Z copy pair (SIMPLEX to DUPLEX)............................................................503

Suspending a Cnt-Ac J Z copy pair....................................................................................507

Making a Business Copy for Mainframe copy pair (SIMPLEX to DUPLEX).................................508

Suspending a Business Copy for Mainframe copy pair.........................................................510

Resynchronizing a Cnt-Ac J Zcopy pair...............................................................................511

10 Automatic operation using BCM Monitor.................................................513

Overview of the Business Continuity Manager Monitor functions.................................................513

Business Continuity Manager Monitor operator commands....................................................516

The monitoring status of a copy group................................................................................517

Putting Business Continuity Manager Monitor to sleep...........................................................517

Stop point.......................................................................................................................517

12 Contents

Starting and stopping the Business Continuity Manager Monitor ................................................517

Starting Business Continuity Manager Monitor.....................................................................517

Format.......................................................................................................................517

Operands..................................................................................................................518

Example....................................................................................................................518

Stopping Business Continuity Manager Monitor...................................................................518

Format.......................................................................................................................518

Operands..................................................................................................................518

Example....................................................................................................................519

Remarks.....................................................................................................................519

Forcibly stopping Business Continuity Manager Monitor........................................................519

Format.......................................................................................................................519

Operands..................................................................................................................520

Example....................................................................................................................520

Return codes for Business Continuity Manager Monitor.........................................................520

Operator commands available in BCM Monitor.......................................................................520

DISPLAY command...........................................................................................................521

Format.......................................................................................................................521

Operands..................................................................................................................521

Example....................................................................................................................522

REPORT command...........................................................................................................522

Format.......................................................................................................................522

Operands..................................................................................................................522

Example....................................................................................................................523

SET command.................................................................................................................523

Format.......................................................................................................................524

Operands..................................................................................................................524

Example....................................................................................................................525

SLEEP command..............................................................................................................525

Format.......................................................................................................................525

Operands..................................................................................................................525

Example....................................................................................................................526

WAKEUP command.........................................................................................................526

Format.......................................................................................................................526

Operands..................................................................................................................526

Example....................................................................................................................526

Troubleshooting procedures provided by BCM Monitor..............................................................527

Logs Collected by BCM Monitor........................................................................................527

When a Business Continuity Manager Monitor Instance Cannot Be Started.............................527

When a Business Continuity Manager Monitor Instance Has Started......................................528

Business Continuity Manager Monitor operation examples.........................................................529

Backup operation example................................................................................................529

Example configuration for backup operation...................................................................529

Backup operation flow.................................................................................................530

Example of creating the YKMONOPT file used for a backup operation..............................531

Example of creating the YKMONCG file used for a backup operation...............................531

Example of failure monitoring............................................................................................532

Example configuration of failure monitoring....................................................................532

Failure monitoring flow................................................................................................533

Example of creating a YKMONOPT file used for failure monitoring....................................534

Example of creating a YKMONCG file used for failure monitoring.....................................534

11 Linkage with Replication Manager...........................................................536

What can be achieved when Business Continuity Manager is linked to Replication Manager?........536

Device scan from Replication Manager...............................................................................537

Contents 13

Defining a copy group from Replication Manager................................................................537

Manipulating a copy group from Replication Manager.........................................................538

Monitoring a copy group from Replication Manager............................................................538

Possible configurations......................................................................................................538

Configuring a Business Continuity Manager agent....................................................................539

Selecting a startup mode..................................................................................................539

Selecting Lock Mode...................................................................................................540

Operations after the configuration file is locked...............................................................541

If the Business Continuity Manager agent has already been started...............................541

If the ISPF panel or BCM Monitor has already been started..........................................542

Collecting audit logs........................................................................................................544

Starting and stopping Business Continuity Manager agents........................................................544

Starting a Business Continuity Manager agent.....................................................................545

Format.......................................................................................................................545

Operands..................................................................................................................545

Example....................................................................................................................545

Stopping a Business Continuity Manager agent...................................................................545

Format.......................................................................................................................545

Operands..................................................................................................................546

Example....................................................................................................................546

Return codes...............................................................................................................546

Forcibly stopping a Business Continuity Manager agent........................................................546

Format.......................................................................................................................546

Operands..................................................................................................................547

Example....................................................................................................................547

Displaying or changing the log output level..............................................................................547

Displaying the log output level...........................................................................................547

Format.......................................................................................................................547

Operands..................................................................................................................547

Example....................................................................................................................547

Changing the log output level............................................................................................548

Format.......................................................................................................................548

Operands..................................................................................................................548

Example....................................................................................................................548

Notes on updating configuration files......................................................................................548

Working around site errors and host failures............................................................................549

Error types and error information handling...............................................................................549

When Business Continuity Manager agent cannot be started.................................................551

When information obtained from Business Continuity Manager agent is not updated................553

12 Troubleshooting....................................................................................554

Troubleshooting Failures........................................................................................................554

Error Notification..................................................................................................................554

Performance Monitor.............................................................................................................555

Trace Output Method............................................................................................................556

Collecting Logs.....................................................................................................................556

Log Types........................................................................................................................556

Setting the Business Continuity Manager Log Output Destination............................................557

System Logger Service Setup.............................................................................................557

Defining a Log Stream.................................................................................................558

Which Parameters to Specify for a Log Stream Definition..................................................559

Planning a DASD Log Dataset.......................................................................................561

Deleting a Log Stream.................................................................................................561

Confirming a Log Stream..............................................................................................561

Business Continuity Manager Log Output Method................................................................561

14 Contents

Using System Logger Service........................................................................................561

Not Using System Logger Service..................................................................................562

Business Continuity Manager Log Data Formats..............................................................564

Business Continuity Manager Log Data Output Tool..............................................................564

Specifying Log Data Conditions....................................................................................564

Example JCL...............................................................................................................565

Error Processing..........................................................................................................565

Data Format...............................................................................................................566

ISPF Log Data..................................................................................................................566

CLI Command-Execution Logs............................................................................................566

Using the ISPF Editor...................................................................................................567

Using a Script for Retrieval...........................................................................................568

HyperSwap Completion Detection...........................................................................................568

Recovering from a Failure......................................................................................................569

Recovering a Command Device After an LDEV Blockage.......................................................569

Recovering a Command Device After a Power Outage..........................................................569

Recovering a Log Dataset After Logs are Full........................................................................569

Performing Operations When a Failure Occurs for a Volume in a Copy Group........................570

Recovering from a Cnt Ac-J Z Failure...................................................................................570

Types of Failures.........................................................................................................570

Recovering from Failures during Failovers and PSOFF/Cut Power.......................................571

Recovering from Other Types of Failures.........................................................................573

What To Do When an Error Occurs While Creating a Configuration File................................575

How To Correct an Error that Occurs While Creating or Updating a Configuration File........575

Causes of Errors that Might Occur While Creating or Updating a Configuration File and the

Recommended Actions.................................................................................................577

What To Do When an Error Occurs in the Copy Group Definition File Generation Function Using

CSV Files........................................................................................................................578

13 Support and other resources...................................................................580

Contacting HP......................................................................................................................580

Subscription service..........................................................................................................580

Documentation feedback..................................................................................................580

Related information...............................................................................................................580

HP websites....................................................................................................................582

Conventions for storage capacity values..................................................................................582

Typographic conventions.......................................................................................................582

A Defining Command Devices in Non-basic Configurations............................584

Configurations for Which the Same Command Device Is Shared from Multiple Hosts.....................584

Configurations for Which Command Devices Can and Cannot Be Defined...................................584

Configurations for Which Command Devices Can Be Defined................................................584

Configurations for Which Command Devices Cannot Be Defined...........................................584

When Multiple Command Devices Are Defined for a Single Storage System on the Same Device

Address Domain...................................................................................................................586

B Initializing volumes for command devices for the XP1024/XP128 Disk Array...589

Command device settings......................................................................................................589

Example of a JCL for volume initialization of command devices...................................................590

C Conventions in syntax explanations..........................................................591

Glossary..................................................................................................593

Index.......................................................................................................602

Contents 15

1 Overview of HP P9000 for Business Continuity Manager

Software

This chapter describes the reasons for using Business Continuity Manager, as well as its features.
It also explains example system features. It describes Business Continuity Manager system
configurations, defines the terms used throughout this manual, and describes how Business Continuity
Manager identifies and interacts with storage systems on different storage system models.

• “Why use Business Continuity Manager?” (page 16)

• “Communication with HP P9000 Command View Advanced Edition Suite Software” (page 17)

• “Products that can be controlled by Business Continuity Manager” (page 18)

• “Remote volume operations” (page 21)

• “Grouping to simplify volume operations” (page 22)

• “Data Center Configurations” (page 27)

• “Functions Supporting the Automatic Operation (BCM Monitor)” (page 32)

• “Functionalities Dependent on the Storage System” (page 35)

• “Storage System Identification ” (page 38)

• “Preparing to set up Business Continuity Manager” (page 39)

Unless otherwise specified, the term storage system in this guide refers to the following disk arrays:

• HP P9500 Disk Array

• HP XP24000/XP20000 Disk Arrays

• HP XP12000/XP10000 Disk Arrays

• HP XP512/XP48 Disk Arrays

• HP XP1024/XP128 Disk Arrays

The GUI illustrations in this guide were created using a Windows computer with the Internet Explorer
browser. Actual windows may differ depending on the operating system and browser used. GUI
contents also vary with licensed program products, storage system models, and firmware versions.

Why use Business Continuity Manager?

The amount of data stored on corporate information systems has increased in tandem with the
importance of keeping that data safe. Due to the rising management costs associated with this
continually increasing size of storage system, the ability to manage mainframe system storage
available with Business Continuity Manager is in strong demand.

Business Continuity Manager offers centralized, enterprise-wide replication and duplication
management for mainframe environments, without the help of host processing. By taking advantage
of storage system copy functions, Business Continuity Manager makes it possible to perform reliable
backup operations in large-scale configurations. This minimizes disaster recovery time and data
loss, and reduces the workload on the storage administrator.

Business Continuity Manager provides access to critical system performance metrics and thresholds
that enable proactive problem avoidance. With this information, you can achieve optimum system
performance and meet or exceed service-level objectives.

The Business Continuity Manager auto-discovery capability eliminates hours of tedious input and
costly human errors resulting from configuring and protecting complex, mission critical applications.

16 Overview of HP P9000 for Business Continuity Manager Software

Business Continuity Manager provides centralized management of HP P9000 mainframe replication
products, regardless of where they reside on the storage system. This provides many business
benefits including:

• Improved business resilience and confidence through frequent, non-disruptive disaster recovery.

• Robust disaster recovery and planned outage functions, which make for smooth operations

and dramatically reducing recovery times.

• Easy to acquire storage system information, making it possible to avoid disaster recovery

failures caused by specifying the wrong duplication target.

• Easy development of additional automation with built-in automation and extensibility features,

using the familiar REXX language, to protect more data with less effort.

• Accelerated deployment of Continuous Access Journal for Mainframe, Continuous Access

Synchronous for Mainframe, Continuous Access Asynchronous for Mainframe and Business
Copy for Mainframe software solutions through a single, consistent user interface based on
the familiar TSO/ISPF full-screen panels.

Communication with HP P9000 Command View Advanced Edition Suite
Software

P9000 Command View Advanced Edition Suite Software is a series of storage management
solutions that can centrally manage ever-larger storage systems to help reduce storage system
management workloads, and streamline storage system operations.

However, because P9000 Command View Advanced Edition products were originally designed
to manage open-system storage, their full power could not be unleashed in the field of
mainframe-system storage management. For this reason, users who owned both open-system and
mainframe-system storage had to manage them separately.

In recent years, customers have been demanding programs that can manage both open-system
and mainframe-system storage to address the problem that increasing storage sizes tends to increase
storage management cost.

Business Continuity Manager can link with P9000 Replication Manager, which is a management
server solution from the HP P9000 Command View Advanced Edition product family. If Business
Continuity Manager is linked with P9000 Replication Manager, both open-system and
mainframe-system storage can be centrally managed from P9000 Replication Manager.

This linkage is achieved via Business Continuity Manager agents that, when configured
appropriately, provide an interface between the two solutions by receiving requests from P9000
Replication Manager and passing them on to Business Continuity Manager.

Figure 1 (page 18) is a conceptual illustration of this centralized management of open-system and

mainframe-system storage that can be achieved when Business Continuity Manager (shown as BC
Manager) is linked with P9000 Replication Manager (shown as Replication Manager).

Communication with HP P9000 Command View Advanced Edition Suite Software 17

Figure 1 Centralized management of Open-system and Mainframe-system Storage

This centralized management of both open-system and mainframe-system storage can provide a
number of advantages, including reduced operation times and quicker responses to failures.

Products that can be controlled by Business Continuity Manager

HP storage systems provide replication products such as Business Copy for Mainframe, Continuous
Access Synchronous Mainframe, and Continuous Access Journal for Mainframe. Business Continuity
Manager can control these replication products to create highly reliable backup data.

18 Overview of HP P9000 for Business Continuity Manager Software

A volume that contains the original data is called a primary volume (P-VOL). P-VOLs exist in storage
systems that are directly connected to a host where Business Continuity Manager is installed.
Remote storage systems (or in the case of Business Copy, duplicate volumes) are the copy
destinations. A volume that contains duplicate data (a copy of the data on the P-VOL) is called a
secondary volume (S-VOL).

A copy pair is a designated relationship between a P-VOL and an S-VOL. P-VOL and S-VOL pairings
have an associated copy type that identifies the duplication or replication solution in use. An S-VOL
of one pair (using one copy type) can also be the P-VOL for another S-VOL (which uses a different
copy type).

Business Continuity Manager can control the following replication products:

• BC Z - Business Copy for Mainframe/Hitachi ShadowImage for Mainframe (SI)

• Cnt Ac-S Z - Continuous Access Synchronous for Mainframe/Hitachi TrueCopy for Mainframe

(TC)

• Cnt Ac-J Z - Continuous Access Journal for Mainframe/Hitachi Universal Replicator for

Mainframe (UR)

• Cnt Ac-A - Continuous Access Asynchronous for Mainframe/Hitachi TrueCopy Asynchronous

for Mainframe (TCA)

NOTE: Continuous Access Asynchronous for Mainframe (Cnt Ac-A) is supported on models of

the HP XP Disk Array. Cnt Ac-A is not supported on the HP P9500 Disk Array. Business Continuity
Manager can be used with both P9500 and XP disk arrays. The XP disk array copy products can
be configured and controlled using the P9000 version of BCM. The HP product names are used
in this manual. For compatibility with existing implementations on XP disk arrays, the Hitachi
abbreviations shown in parenthesis are accepted by the user interface. The graphics in this manual
show the Hitachi abbreviations but your system may show the HP abbreviations.

Throughout this manual, each copy pair type is referred to by its full name as well as its abbreviation,
although many of the Business Continuity Manager ISPF panels only use the abbreviation. When
a field on a Business Continuity Manager ISPF panel uses an abbreviation for any of these terms,
any related text in the manual follows the ISPF terminology and lists the full term in parentheses.

The following subsections explain each copy type in detail.

Business Copy for Mainframe (BC Z)

Duplicates volumes within a storage system.

Continuous Access Synchronous for Mainframe (Cnt Ac-S Z)

Performs and manages remote synchronized volume copy operations between a storage system
on the primary site and a storage system on the secondary site, so each S-VOL is always identical
to its P-VOL counterpart.

Products that can be controlled by Business Continuity Manager 19

Continuous Access Asynchronous for Mainframe (Cnt Ac-A)

Stores data and control information for each P-VOL in a sidefile, and performs and manages the
remote copying of volumes independently (asynchronously) of the host I/O processes.

Continuous Access Journal for Mainframe (Cnt Ac-J Z)

Writes updated data and control information to the master journal on the primary site. When the
secondary site makes a read journal request, the updated data and control information are written
from the master journal to the restore journal (on the secondary site). This activity is performed
asynchronously to host I/O processing.

20 Overview of HP P9000 for Business Continuity Manager Software

Remote volume operations

A command device defined in Business Continuity Manager allows you to remotely create copy
pairs, remotely operate volumes, and remotely monitor the status of volumes. This allows you to
reduce the operational costs of remote locations.

“Remote Volume Operation” (page 21) explains remote volume operation.

Figure 2 Remote Volume Operation

Remote volume operations 21

Grouping to simplify volume operations

Business Continuity Manager can group together copy pairs to improve the operability of managing
replicas of large-scale systems that handle substantial amounts of data. Copy pairs can be grouped
together and managed as a single entity. These group types are:

• Copy groups (see “Copy groups” (page 22))

• Consistency groups (see “Consistency groups” (page 23))

• Copy group containers (see “Copy group containers” (page 25))

CAUTION: If a consistency group is added to a copy group container, it can no longer be

operated on as a consistency group. The consistency group can then only be operated on by
performing operations on the copy group container.

Working with copy pairs in groups simplifies volume operation and reduces system administration
costs.

“Overview of volume operation” (page 22) shows an overview of volume operation.

Figure 3 Overview of volume operation

Copy groups

A copy group is a set of copy pairs that have the same copy type (Business Copy for Mainframe,
Continuous Access Synchronous for Mainframe, Continuous Access Asynchronous for Mainframe
or Continuous Access Journal for Mainframe), and is designated a copy group id for identification.
An operation performed on a copy group is performed on all of the copy pairs within that copy
group.

To define a copy group and assign a copy group id, see “Defining a copy group” (page 477).

22 Overview of HP P9000 for Business Continuity Manager Software

Consistency groups

A consistency group is a copy group recognized by a storage system.
A consistency group updates the S-VOLs in the same order that data was put onto the P-VOLs. The

data on an S-VOL is guaranteed to be identical to the data on a P-VOL at consistency times.
Therefore, data at the secondary site can be used to recover the data at the primary site. This is
called preserving consistency. The consistency of updates is assured throughout the entire consistency
group. Table 1 (page 23) lists the methods for preserving consistency for each copy type.

Table 1 Methods to preserve consistency for each copy type

Consistency preservation methodConsistency group ID

specification method

Consistency group IDCopy type

The NORMAL ATTIME Suspend
function or the CAJ ATTIME

Consistency group IDs are
specified in the Copy Group

OptionalBusiness Copy for

Mainframe

Suspend function can be used toAttributes panel in which the
preserve the consistency of copy
groups.

copy group attributes are
defined for the consistency
group ID already registered in
the storage system by Remote
Web Console.

The Cnt-Ac S Z consistency
preservation function in Business

When working with Cnt-Ac S
Z, you don't need to register

OptionalContinuous

Access

Continuity Manager can be usedthe consistency group ID in theSynchronous for

Mainframe to preserve consistency. Forstorage system. Consistency

details about how to implementgroup IDs are specified in the
this, see “The Continuous AccessCopy Group Attributes panel

Synchronous Consistency
Preservation Function” (page 78).

in which the copy group
attributes are defined for the

When the Open/MF Consistency
Preservation Function is used,

consistency group ID for Cnt-Ac
S Z.

consistency is only preserved for
the Cnt-Ac S Z copy group in the
storage system that contains the
combined consistency group. For
details on the Open/MF
Consistency Preservation
Function, see “Open/MF

Consistency Groups” (page 25).

Consistency is preserved by using
only the Continuous Access

Consistency group IDs are
specified in the Copy Group

YesContinuous

Access

Asynchronous for MainframeAttributes panel in which theAsynchronous for

Mainframe functions of the storage system. Ifcopy group attributes are

the ATTIME suspend function isdefined for the consistency
used, Continuous Accessgroup ID already registered in
Asynchronous for Mainframethe storage system by Remote

Web Console. copy groups that are configured

across multiple storage systems
can be suspended at the same
time.

Consistency is preserved by using
only the Cnt Ac-J Z functions of

The journal group number
already registered in the

YesNon-4x4

configurations

Continuous
Access Journal
for Mainframe the storage system. If the CAJstorage system by the Remote

ATTIME suspend function is usedWeb Console is specified as
for BC Z copy groups that linkthe consistency group ID. In
with Cnt Ac-J Z copy groups, BCBusiness Continuity Manager,
Z copy groups that arethe journal group number for
configured across multiplethe primary site is used as the
storage systems can be
suspended at the same time.

consistency group ID, and the
journal group number for the
secondary site is used as the
sub consistency group ID. The

Grouping to simplify volume operations 23

Table 1 Methods to preserve consistency for each copy type (continued)

Consistency preservation methodConsistency group ID

specification method

Consistency group IDCopy type

consistency group ID and sub
consistency group ID are
specified in the Copy Group
Attributes panel in which the
copy group attributes are
defined.

For EXCTG, the EXCTG ID
(Forward/Reverse) is specified

Yes4x4

configurations

in the Copy Group Detail
Definition panel. For details
about EXCTG, see “Extended

Consistency Groups”
(page 26).

Legend: Yes= Required, Optional= Can be selected.

The Business Continuity Manager ISPF panels use the abbreviation C/T group for consistency
group.

For the Business Copy for Mainframe, Continuous Access Asynchronous for Mainframe, or
Continuous Access Journal for Mainframe copy type, before a consistency group can be defined,
a consistency group ID must be registered with the storage systems. This is described in “Setting

up Storage Systems” (page 100).

You can define a consistency group in Business Continuity Manager by using the registered
consistency group ID. The functions of the storage system where the consistency group ID was
registered can preserve the consistency of the consistency group. Defining a consistency group is
explained in section “Defining the copy group ID and copy group attributes” (page 486).

CAUTION: If you define a consistency group across multiple storage systems and create a copy

group by specifying the consistency group ID, consistency is not preserved, except in the following
instances:

• For Continuous Access Asynchronous for Mainframe: In a copy group configuration of two

to four primary storage systems and a secondary storage system.

• For Continuous Access Journal for Mainframe: In an Extended Consistency Group (see

“Extended Consistency Groups” (page 26)).

This is similar to preserving consistency for a copy group container (see “Copy group containers”

(page 25)).

NOTE: Throughout this manual, the terms consistency group and consistency group ID are used

in full when they appear in the text.
When a field on a Business Continuity Manager ISPF panel uses the abbreviation for either of

these terms (C/T group or C/T group ID), any related text duplicates the ISPF terminology and
follows it with the full term in parentheses.

Journal groups

Continuous Access Journal writes updates and control information to a master journal on the primary
site. Upon a request from the secondary site, the updates are written from the master journal to a
restore journal. The master and restore journal pair is called a journal group (JNLG).

A journal volume is a specific type of volume used exclusively to transfer updated data. This group
of volumes is not a copy pair P-VOL/S-VOL correlation.

24 Overview of HP P9000 for Business Continuity Manager Software

Open/MF Consistency Groups

When the Open/MF Consistency Preservation Function is used for Continuous Access Synchronous
for Mainframe consistency groups, open-system copy groups and mainframe system copy groups
within the same consistency group can be suspended at the same time, to preserve consistency
between mainframe system copy groups and open-system copy groups within the same consistency
group. An Open/MF consistency group is a consistency group that uses the Open/MF Consistency
Preservation Function and contains open system and mainframe copy groups.

Figure 4 (page 25) shows the effect of suspending a consistency group that uses the Open/MF

consistency preservation function.

Figure 4 Effect of Suspending an Open/MF Consistency Group

When the YKSUSPND command is issued from Business Continuity Manager for a mainframe
system copy group, open-system copy groups and mainframe system copy groups within the same
consistency group are suspended at the same time.

For more information about defining the Continuous Access Synchronous Open/MF Consistency
Preservation Function, see “Defining a configuration so that the Open/MF Consistency Preservation

function can be used” (page 234).

Copy group containers

A copy group container (CG container) is similar to a copy group, although instead of grouping
a set of copy pairs that have the same copy type, it groups a set of copy groups composed of

Grouping to simplify volume operations 25

pairs that have the same copy type. When an operation is performed on a CG group container,
it is performed on all of the pairs included in the container.

CAUTION: Because Business Continuity Manager actually sends instructions to the storage system

for each of the C/T groups included in a copy group container, consistency of each included
consistency group on the primary site and on the secondary site is preserved. However, consistency
between consistency groups in the copy group container is not preserved, except for extended
consistency groups. Extended consistency groups are described in section “Extended Consistency

Groups” (page 26).

Defining a copy group container is explained in “Defining a copy group container” (page 485).

“CG Container Overview” (page 26) gives an overview of copy group containers. In “CG Container
Overview” (page 26), when an operation is performed on the CG container (Copy group ID:

CG.UR), the operation is performed on the CG container (copy group ID CG.TCA), the operation
is performed in batch for the C/T groups with the C/T group IDs 71 and 72.

Figure 5 CG Container Overview

Extended Consistency Groups

In a 4x4 or 4x4x4 configuration, consistency can be preserved among journal groups spread
across among multiple storage systems. A copy group container that can preserve consistency
between multiple journal groups is called an Extended Consistency Group (EXCTG).

26 Overview of HP P9000 for Business Continuity Manager Software

When an Extended C/T Group ID (EXCTG ID) is specified in the copy group container, the container
is registered in the storage system as an EXCTG, and consistency between the journal groups in
that CG container is preserved.

Specifying an EXCTG ID in a CG container is explained in “Defining an EXCTG” (page 489).

Terminology by Copy Type

The terminology used to describe similar situations can differ, depending on the type of copy group
represented. “Phrase Used to Refer to BC Z and Cnt-Ac S Z Copy Groups” (page 27) through

“Phrase Used to Refer to Cnt Ac-J Z Copy Group” (page 27) provide the terminology used when

working with each of the copy types supported by Business Continuity Manager.

Table 2 Phrase Used to Refer to BC Z and Cnt-Ac S Z Copy Groups

Phrase used to refer to the copy groupType

Copy group with no C/T group ID specifiedSingle groupNo C/T group ID specified

Copy group with C/T group ID specifiedSingle groupC/T group ID specified

CG containerMultiple groups

Table 3 Phrase Used to Refer to Continuous Access Asynchronous for Mainframe Copy Group

Phrase used to refer to the copy groupType

Copy group with C/T group ID specifiedSingle groupC/T group ID specified

CG containerMultiple groups

Table 4 Phrase Used to Refer to Cnt Ac-J Z Copy Group

Phrase used to refer to the copy groupType

Copy group with C/T group ID
specified (journal group)

No EXCTG ID specifiedSingle groupC/T group ID (journal
group number)
specified

CG containerNo EXCTG ID specifiedMultiple groups

CG container with EXCTG ID specifiedEXCTG ID specified

Data Center Configurations

Business Continuity Manager performs replication management for a variety of DC configurations
and situations. This section describes the basic configurations.

2DC Configuration

This configuration performs remote copying from the primary site to the secondary site.

Data Center Configurations 27

3DC Cascade Configuration

This configuration performs remote copying from the primary site to a nearby intermediate site and
a distant remote site. Continuous Access Synchronous for Mainframe is used from the primary site
to the intermediate site, and Continuous Access Journal for Mainframe from the intermediate site
to the secondary site.

3DC Multi-Target Configuration

This configuration performs remote copying from the primary site to the local site with Continuous
Access Synchronous for Mainframe, and from the primary site to the remote site with Continuous
Access Journal for Mainframe.

3DC Multi-Target Configuration with the Delta Resync Function

This configuration allows operation at the local site and remote site under a 2DC configuration to
start immediately during a primary site failure or maintenance. In a 3DC Multi-Target configuration,
a Continuous Access Journal for Mainframe copy pair (called a delta resync pair) must be created
between the Continuous Access Synchronous for Mainframe S-VOL on the local site and the
Continuous Access Journal for Mainframe S-VOL on the remote site beforehand, and is put in the
delta resync waiting status (meaning that the pair is in the suspend status while the journal for the
delta resync pair acquires the differential data between the S-VOLs on the local and remote sites).
For details about the Delta Resync Function, see “The Delta Resync configuration” (page 47).

28 Overview of HP P9000 for Business Continuity Manager Software

2DC Configuration with HyperSwap and Continuous Access Journal

This configuration allows operation at the primary site and secondary site under a 2DC configuration
to start immediately after a primary storage system failure or maintenance by using HyperSwap.
Both the primary storage system and local storage system are placed at the primary site, and a
PPRC copy pair for which HyperSwaps are enabled is used. Continuous Access Journal for
Mainframe is also used from the primary storage system for the remote storage system at the
secondary site. A Continuous Access Journal for Mainframe copy pair in the delta resync waiting
status must be created between the PPRC copy pair S-VOL and the Continuous Access Journal for
Mainframe S-VOL beforehand.

4x4 Configuration

This configuration performs remote copying from multiple storage systems on the primary site to
multiple storage systems on the secondary site with Continuous Access Journal for Mainframe to
preserve consistency.

Data Center Configurations 29

4x4x4 Cascade Configuration

This configuration is a combination of a 4x4 configuration and a 3DC Cascade configuration.
Between the primary site and the intermediate site, a Continuous Access Synchronous for Mainframe
copy group is used. Between the intermediate site and the remote site, the Continuous Access
Journal for Mainframe copy group that defined an extended consistency group (EXCTG) is used.
This configuration can preserve consistency across multiple storage systems in an EXCTG.

30 Overview of HP P9000 for Business Continuity Manager Software