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Oracle Solaris Cluster Geographic Edition Overview Oracle Solaris Cluster 4.1 |
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Oracle Solaris Cluster Geographic Edition Overview Oracle Solaris Cluster 4.1 |
1. Introduction to Geographic Edition Software
2. Key Concepts for Geographic Edition
Sun Availability Suite Feature
EMC Symmetrix Remote Data Facility Software
Sun ZFS Storage Appliance Software
Resource Groups and Device Groups
Overview of Resource Groups and Device Groups
Relationship Between Partnerships and Protection Groups
Geographic Edition software uses heartbeats to monitor the state between partner clusters. Heartbeats are sent over the public network to detect cluster failures at geographically separated sites. Heartbeat monitoring is part of a partnership configuration. For example, a cluster failure occurs when all nodes of a cluster shut down. Geographic Edition software uses the heartbeat status to notify administrators of failures or to trigger a failover to a secondary cluster at an alternate site. Heartbeats could also be lost when a cluster loses access to the public network and no communication occurs between the partner clusters.
The heartbeat monitor uses plug-in modules to query the heartbeat status of its partners. Geographic Edition software offers default plug-ins for monitoring through a TCP/UDP connection.
You can use customized plug-ins to provide a data path over alternate communication links, such as email, HTTP, satellite, and microwave towers.
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