Designing Disaster Recovery Clusters using Metroclusters and Continentalclusters, Reprinted October 2011 (5900-1881)

Resynchronizing..........................................................................................................194
Using the pairresync Command....................................................................................195
Failback.....................................................................................................................195
Timing Considerations.................................................................................................196
Data maintenance with the failure of a Metrocluster with Continuous Access for P9000 and
XP Failover.................................................................................................................196
Swap Takeover Failure (Asynchronous/Journal mode)......................................................196
Takeover Timeout (for Continuous Access Journal mode)...................................................196
PVOL-PAIR with SVOL-PSUS(SSWS) State (for Continuous Access Journal Mode)...................197
Metrocluster with Continuous Access for P9000 and XP Device Group Monitor........................197
P9000 or XP/Continuous Access Device Group Monitor Operation Overview.....................197
Configuring the Monitor...............................................................................................197
Configure the Monitor’s Variables in the Package Environment File.....................................198
Configure Metrocluster with Continuous Access for P9000 and XP Device Group Monitor for
Modular Packages......................................................................................................199
Configure Metrocluster with Continuous Access for P9000 and XP Device Group Monitor as
a Service of the Package..............................................................................................199
Configuring the Metrocluster with Continuous Access for P9000 and XP Device Group Monitor
as a Service in the Site Controller Package.....................................................................199
Troubleshooting the Metrocluster with Continuous Access for P9000 and XP Device Group
Monitor.....................................................................................................................200
Completing and Running a Continentalclusters Solution with Continuous Access P9000 or XP.........200
Setting up a Primary Package on the Source Disk Site...........................................................200
Setting up a Recovery Package on the Recovery Cluster........................................................203
Setting up the Continentalclusters Configuration...................................................................205
Switching to the Recovery Cluster in Case of Disaster............................................................206
Failback Scenarios...........................................................................................................206
Scenario 1.................................................................................................................206
Scenario 2.................................................................................................................206
Failback in Scenarios 1 and 2......................................................................................206
Failback when the Primary has SMPL Status....................................................................207
Maintaining the Continuous Access P9000 and XP Data Replication Environment.....................208
Resynchronizing..........................................................................................................208
Using the pairresync Command....................................................................................209
Some Further Points ....................................................................................................209
4 Building Disaster Recovery Serviceguard Solutions Using Metrocluster with
Continuous Access EVA..............................................................................211
Files for Integrating the EVA with Serviceguard Clusters..............................................................211
Overview of EVA and Continuous Access EVA Concepts............................................................212
Metrocluster with EVA and Data Replication........................................................................212
DR Groups.................................................................................................................213
DR Group Properties...............................................................................................213
Log Disk.....................................................................................................................214
Copy Sets.......................................................................................................................215
Managed Sets.................................................................................................................215
Failover..........................................................................................................................215
Continuous Access EVA Management Software...................................................................215
Preparing a Serviceguard Cluster for Metrocluster Continuous Access EVA ..................................216
Setting up the Storage Hardware.......................................................................................216
Cluster Configuration........................................................................................................217
Management Server/SMI-S and DR Groups Configuration....................................................217
Defining Management Server and SMI-S Information ...........................................................218
Creating the Management Server List.............................................................................218
Creating the Management Server Mapping File..............................................................219
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