Unlike metropolitan and campus clusters, which
have a single-cluster architecture, a continental cluster uses multiple Serviceguard clusters to provide application recovery
over local or wide area network (LAN and WAN). Using the Continentalclusters
product, two independently functioning clusters are set up in such
a way that in the event of a disaster, one cluster can take over the critical operations formerly carried out by the other cluster
Disaster tolerance is obtained by eliminating
the cluster itself as a single point of failure. This chapter describes
the configuration and management of a basic continental cluster through
the following topics:
Refer to Appendix D and Appendix E for additional
information on the Continentalclusters command set and on configuration
file parameters. For details of the cascading failover using HP StorageWorks
or EMC Symmetrix disk arrays contact your HP representative.
NOTE: This chapter briefly addresses data replication,
highly available WANs, and site security and communication. Chapters
3, 4 and 5 give details on physical data replication using the HP
StorageWorks Disk Array XP Series with Continuous Access XP, HP StorageWorks
Disk Array EVA Series with Continuous Access EVA and the EMC Symmetrix
with the SRDF facility.
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