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This topic is a step in Process of Infrastructure Planning.
For more information about high availability, see High Availability Deployment Planning.
For each business location, assess the impact of losing each server component. Consider the possibility of the component failing, rather than the hosting platform itself. Individual server components that are important to normal application function must be identified in your planning and review phases. Work closely with your implementation team to identify all components that could represent single points of failure.
After you complete this analysis, define high-availability policies for all applications and services. Decide how long your business can tolerate not having access to key applications. Also, decide how long your business can tolerate degraded performance.
For example, a company decides that Siebel Call Center will run 24 hours a day, seven days a week, and the maximum acceptable downtime is 30 minutes. The company also decides the maximum time it can accept degraded performance is one hour.
Finally, at each business location, list all the server components to which each policy applies. This analysis forms the basis for implementing a high-availability strategy as part of hardware planning.
The server platform that hosts the Siebel Database is crucial to Siebel deployment operations. For this reason, it is important to define high-availability and data integrity policies specifically for the database server. The following policies are recommended:
The Siebel Gateway Name Server maintains the configuration information for all Siebel Servers in all the Siebel Enterprise Servers it manages. Loss of the Gateway Name Server due to a disk failure could bring your Siebel deployment to a halt while the system is restored.
A Siebel Server temporarily stores transaction files that move to and from Siebel Remote mobile users. The loss of these files will result in the need to re-extract the database for all affected mobile users. (Siebel Remote supports synchronization of data between Siebel Mobile Web Clients and the Siebel Database through a dial-up connection.)
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