The Oracle Solaris Cluster Geographic Edition (Geographic Edition) framework is a layered extension of the Oracle Solaris Cluster software. The Geographic Edition framework protects applications from unexpected disruptions by using multiple clusters that are separated by long distances and by using a redundant infrastructure that replicates data between these clusters. The clusters can be global clusters, zone clusters, or a combination of both.
An Oracle Solaris Cluster configuration running the Geographic Edition framework enables applications to tolerate disasters by managing replication of data and migration of services to a geographically separated secondary cluster. A configuration running the Geographic Edition framework can also be used to manage a remote Oracle database that uses Oracle Data Guard replication to a secondary site, even when the database system is not running Oracle Solaris Cluster software.
A disaster such as an earthquake, a fire, or a storm might disable the cluster at the primary site. If a disaster occurs, the Geographic Edition cluster can continue to provide services by using the following levels of redundancy:
A secondary cluster
Duplicated application configuration on the secondary cluster
Replicated data on the secondary cluster
This chapter gives a high-level overview of the Geographic Edition framework. It contains the following sections: