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Working with Portal Server Building Modules
Chapter 5 Creating Your Portal Design 91
Table 5-1 summarizes these high availability scenarios along with their supporting
techniques.
Table 5-1 Portal Server High Availability Scenarios
Component
Requirements
Necessary for Best
Effort Deployment?
Necessary for NSPOF
Deployment?
Necessary for Transparent
Failover Deployment?
Hardware Redundancy Yes Yes Yes
Portal Server Building
Modules
No Yes Yes
Multi-master Configuration No Yes Yes
Load Balancing Yes Yes Yes
Stateless Applications and
Checkpointing
Mechanisms
No No Yes
Session Failover No No Yes.
Directory Server Clustering No No Yes
NOTE Load balancing is not provided out-of-the-box with the Web Server
product.