Sun Java System Reference Configuration Series: Portal Service on Application Server Cluster

Summary of Quality-of-Service Requirements

The quality-of-service requirements for the portal service on Application Server Cluster reference configuration are summarized in the following table.

Table 2–4 Quality-of-Service Requirements for the Reference Configuration

Service Quality 



Response time under two seconds for default portal channels at peak load levels. 

See Performance Requirements.


Service availability with both user session availability and application session state availability.  

No single points of failure. 

See Availability Requirements.


Protected services in separate network subnets. 

Firewall protection for Internet access and for portal service subnet zone. 

Encrypted Internet transport over SSL. 

See Security Requirements.


Easily scalable so that no computer system is more than 80% utilized under daily peak load. Also the deployed system should accommodate long-term growth of 10% per year. 

See Scalability Requirements.


Minimize planned downtime needed to scale the portal service or to upgrade software components in the configuration. 

See Serviceability Requirements.