User's Guide

5 Building Disaster Recovery Serviceguard Solutions Using Metrocluster with EMC
SRDF.......................................................................................................255
Files for Integrating Serviceguard with EMC SRDF.....................................................................255
Overview of EMC and SRDF Concepts....................................................................................256
Preparing the Cluster for Data Replication................................................................................257
Installing the Necessary Software.......................................................................................257
Building the Symmetrix CLI Database..................................................................................257
Determining Symmetrix Device Names on Each Node...........................................................258
Building a Metrocluster Solution with EMC SRDF.......................................................................262
Setting up 1 by 1 Configurations.......................................................................................262
Creating Symmetrix Device Groups................................................................................262
Configuring Gatekeeper Devices...................................................................................263
Verifying the EMC Symmetrix Configuration....................................................................264
Creating and Exporting Volume Groups.........................................................................264
Importing Volume Groups on Other Nodes.....................................................................264
Configuring PV Links....................................................................................................265
Grouping the Symmetrix Devices at Each Data Center...........................................................265
Setting up M by N Configurations......................................................................................265
Creating Symmetrix Device Groups....................................................................................266
Configuring Gatekeeper Devices........................................................................................267
Creating the Consistency Groups.......................................................................................267
Creating Volume Groups..................................................................................................268
Creating VxVM Disk Groups using Metrocluster with EMC SRDF............................................270
Validating VxVM Disk Groups using Metrocluster with EMC SRDF..........................................270
Additional Examples of M by N Configurations...................................................................271
Configuring Serviceguard Legacy Packages for Automatic Disaster Recovery............................272
Configuring Modular Packages..........................................................................................275
Configuring Modular Packages with Metrocluster EMC SRDF A.08.00...............................275
Migrating a Metrocluster Legacy Package to a Metrocluster SRDF A.08.00 Modular
Package.....................................................................................................................278
Configuring Modular Packages using Metrocluster EMC SRDF A.09.00 or Later..................279
Migrating Legacy Packages to Modular Packages using Metrocluster EMC SRDF A.09.00 or
Later..........................................................................................................................280
Upgrading Metrocluster SRDF Modular Packages to the Latest Version................................281
Checking the Metrocluster Package Configuration............................................................282
Support for Easy Deployment Features................................................................................283
Easy Cluster Creation...................................................................................................283
Easy Storage Preparation.............................................................................................283
Easy Deployment of Metrocluster Modular Packages........................................................284
Adding a Node to a Metrocluster......................................................................................284
Maintaining a Cluster that uses Metrocluster with EMC SRDF.................................................285
Managing Business Continuity Volumes..............................................................................285
Protecting against Rolling Disasters................................................................................285
Using the BCV in Resynchronization...............................................................................286
R1/R2 Swapping.............................................................................................................287
R1/R2 Swapping using Metrocluster SRDF.....................................................................287
R1/R2 Swapping using Manual Procedures....................................................................287
Some Further Points...............................................................................................................288
Metrocluster with SRDF/Asynchronous Data Replication.............................................................290
Overview of SRDF/Asynchronous Concepts.........................................................................290
Requirements for using SRDF/Asynchronous in a Metrocluster Environment..............................291
Hardware Requirements...............................................................................................291
Software Requirements.................................................................................................291
Preparing the Cluster for SRDF/Asynchronous Data Replication..............................................291
10 Contents