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

If Delta Resync pair was deleted in the step Suspending the replication to the recovery cluster of
this section, re-create the Delta Resync pair and assign the remote command device to journal
volumes of Delta Resync pair using XP Remote Web Console. For details on assigning remote
command devices to journal volumes, see “Assigning Remote Command Devices to Journal Volumes”
(page 440).
Configuring the Site Controller Package in the Recovery Cluster
A Site Controller Package in the recovery cluster must be created using Metrocluster 3DC recovery
module dts/recovery_xpca3dc along with the Site Controller module dts/sc.
All 3DC parameters must be configured in the Site Controller Package configuration file. The
Metrocluster environment file need not be edited. The Metrocluster environment file is automatically
generated on all nodes when this package configuration is applied in the cluster. All parameters
that were previously available in the Metrocluster environment file are now configured from the
package configuration file.
CAUTION: Do not delete the Metrocluster environment file that is generated. This file is crucial
for failover and recovery operations in 3DC solution.
Complete the following procedure on a node in the recovery cluster to configure the Site Controller
Package for the RAC database in the recovery cluster:
1. Create a Site Controller Package configuration file using the dts/sc and
dts/recovery_xpca3dc modules.
# cmmakepkg -m dts/sc –m dts/recovery_xpca3dc \
/etc/cmcluster/hrdb_sc/hrdb_sc.config
2. Edit the hrdb_sc.config file and specify the following:
• Name for the package_name attribute
package_name hrdb_sc
• Names of the nodes explicitly using the node_name attribute
• The Site Controller Package directory for the dts/dts/dts_pkg_dir attribute.
dts/dts/dts_pkg_dir /etc/cmcluster/hrdb_sc
This is the package directory for this Site Controller Package. The Metrocluster environment
file is automatically generated for this package in this directory.
• Specify a name for the log file.
script_log_file /etc/cmcluster/hrdb_sc/hrdb_sc.log
• Specify the site without any packages.
Do not specify any packages using the critical_package or managed_package
attributes.
site site3
• Edit the following Metrocluster 3DC parameters:
◦ 3DC_TOPOLOGY
◦ DC1_NODE_LIST
◦ DC2_NODE_LIST
◦ DC3_NODE_LIST
◦ DC1_DC2_DEVICE_GROUP
◦ DC2_DC3_DEVICE_GROUP
◦ DC1_DC3_DEVICE_GROUP
458 Designing a Three Data Center Disaster Recovery Solution