Planning for the IMS Server deployment
For scalability considerations, the IMS Server can be deployed in a number of configurations; stand-alone, cluster, multiple tiers, or in a geographically distributed IMS Server configuration.
- Stand-alone server
The IMS Server is deployed on a stand-alone WebSphere® Application Server profile. The web server and application server are typically installed and configured on the same host. A stand-alone deployment scenario is typically used for pilot or small scale deployments.
- Multi-tiered deployment
Server components on all three tiers can be scaled vertically or horizontally. On the application-tier, the IMS Server can be deployed on a WebSphere Application Server cluster (network deployment). The data-tier can also be deployed in a high availability cluster. On the web-tier, the IBM® HTTP Server can be installed on a separate server tier.
- Geographically distributed or multi-site configuration
In a geographically distributed deployment, there are multiple IMS Server hosts and Database servers deployed on multiple sites. Database replication is configured for the data-tier to synchronize data between the sites periodically.
See the following topics: