Network Deployment (Distributed operating systems), v8.0 > Applications > Service integration > Message stores > Message store high availability
Data store high availability
A messaging engine in a cluster bus member can fail over between servers in the cluster, but the messaging engine must be able to access the saved state in its data store from any of the cluster servers.
Each messaging engine on a service integration bus belongs to one high availability group (HAGroup). The members of each HAGroup are controlled by a policy assigned to the group at run time. This core group policy determines the availability characteristics of the messaging engine in the HAGroup, including which servers the messaging engine can run on, including the choice of server to which the messaging engine can fail over. If the cluster bus member in which a messaging engine is running fails, the data store that the messaging engine uses must be accessible from the server to which the messaging engine moves.
Policies for service integration
Configuration planning for a messaging engine to use a data store
Configure a core group policy for messaging engines
Configure high availability and workload sharing of service integration
Concept topic