Understanding and Designing Serviceguard Disaster Recovery Architectures

Figure 11 Sample Continentalclusters Configuration
Site A
Node 1
Monitor
Package
Site A Disk Array
Site A Cluster (Primary)
Site A
Node 2
Site B
Node 1
Site B
Node 2
Data Replication Links
Recovery
Group
Packages
Recovery
Group Packages
Continentalclusters
Configuration
Package
Monitor
Package
Site B Disk Array
Site B Cluster (Recovery)
FC Switch
FC Switch
WAN
Converters
WAN
Converters
WAN
WAN
PRI_SCM_DB_PKG
cconfpkg
REC_CRM_DB_PKG
ccmonpkg
REC_SCM_DB_PKG
cconfpkg
PRI_CRM_DB_PKG
ccmonpkg
Terms and Concepts
Continentalclusters
Continentalclusters is configured using two or more Serviceguard clusters. The packages in different
Serviceguard clusters have a special primary-recovery relationship between them. This relation is
defined by the user in Continentalclusters configuration and is enforced by the Continentalclusters
software.
Primary and Recovery Clusters
A Serviceguard cluster that has a package in the recovery role is called the recovery cluster or the
monitoring cluster and a Serviceguard cluster that has a package in the primary role is called the
primary cluster or the monitored cluster. In case of a mutual recovery configuration, each cluster
acts as the monitoring cluster for the other.
28 Metrocluster and Continentalclusters