Availability Components
Availability components provide near-continuous uptime for system service
components and custom application services. The availability components included
in Java ES and the services they provide are shown in the following table.
For more details on each component, see Availability Components.
Table 1–2 Java ES Availability
Components
|
Component
|
Availability Services Provided
|
|
High Availability Session
Store
|
Provides a data store that makes application data, especially session
state data, available even in the case of failure.
|
|
Sun Cluster
|
Provides high availability and scalability services for Java ES, the
applications that run on top of the Java ES infrastructure, and the hardware
environment in which both are deployed.
|
|
Sun Cluster Geographic Edition [Java ES 5 is the first release to include Sun Cluster Geographic Edition
as a Java ES product component.]
|
Protects applications from unexpected disruptions using multiple clusters
that are geographically separated and a redundant infrastructure that replicates
data between these clusters. Sun Cluster Geographic Edition software is a
layered extension of Sun Cluster software.
|
