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

◦ DC1_DC2_DEVICE_GROUP_MU
◦ DC2_DC3_DEVICE_GROUP_MU
◦ DC1_DC3_DEVICE_GROUP_MU
◦ FENCE
◦ HORCMPERM
◦ HORCMINST
◦ HORCTIMEOUT
◦ WAITTIME
◦ AUTO_NONCURDATA
For more information on the 3DC parameters, see “Configuring Recovery Packages in
the Recovery Cluster” (page 445).
3. Apply the empty Site Controller Package configuration file in the recovery cluster.
# cmapplyconf -P /etc/cmcluster/hrdb_sc/hrdb_sc.config
IMPORTANT: Ensure there are no packages configured with the critical_package or
managed_package attributes in the Site Controller Package configuration file. These attributes
must be configured only after configuring the Site Safety Latch dependencies.
Configuring the Site Safety Latch Dependencies in the Recovery Cluster
After the Site Controller Package configuration is applied, the corresponding Site Safety Latch is
automatically configured in the recovery cluster. This section describes the procedure to configure
the Site Safety Latch dependencies.
Complete the following procedure to configure the Site Safety Latch dependencies:
1. If you have SG SMS CVM or CFS configured in your environment, add the EMS resource
dependency to all DG MNP packages in the RAC MNP stack on the recovery cluster.
Run the following command from a node in the recovery cluster:
# cfsdgadm add_ems <cvm_dg_name> /dts/mcsc/cw_sc 40 "!= DOWN"
NOTE: Specify the condition as != DOWN with a space before the word Down. Ignoring the
space will result in the cfsdgadm command failing.
If you have SLVM configured in your environment, add the EMS resource details in the packages
that are the foremost predecessors in the dependency order among the workload packages
in the recovery cluster. If you have VERITAS CVM configured in your environment, add the
EMS resource details in the CVM disk group packages in the recovery cluster.
resource_name /dts/mcsc/cw_sc
resource_polling_interval 120
resource_up_value != DOWN
resource_start automatic
When using SLVM or VERITAS CVM configured, run the cmapplyconf command to apply
the modified package configuration.
2. Verify the Site Safety Latch resource configuration in the recovery cluster.
Run the cfsdgadm show_ems command:
# cfsdgadm show_ems <dg_name>
RESOURCE_NAME /dts/mcsc/hrdb_sc
RESOURCE_POLLING_INTERVAL 40
RESOURCE_UP_VALUE != DOWN
Deploying a Complex Workload in Three Data Center Solution using SADTA 459