Understanding and Designing Serviceguard Disaster Recovery Architectures

Figure 16 Web Server Configured as a Complex Workload
Metrocluster
Node 1 Node 2
Disk Array
Active Application
Configuration
Data Replication
Passive Application
Configuration
Site A
Site A Apache
WWW
Site Safety
Latch
Site Safety
Latch
Site A Mount Point
Node 1 Node 2
Disk Array
Site B
Site B Apache
WWW
Site B Mount Point
Site B Disk Group
Site B CFS Sub ClusterSite A CFS Sub Cluster
SG CFS SMNP
Site
Controller
Site A Disk Group
Continentalclusters SADTA configuration
In a Continentalclusters SADTA configuration, there is only one site configured per cluster. The Site
Controller package must be configured redundantly in both the primary cluster and the recovery
cluster. The active complex workload in the primary cluster is managed by a Site Controller that
is added as the primary package in a Continentalclusters Recovery Group. The redundant complex
workload in the recovery cluster is managed by another Site Controller package that is added as
the recovery package in the same Continentalclusters Recovery Group.
Understanding Site Aware Disaster Recovery Architecture Concepts 39