Beginning with version 9.1.00, CA Network Flow Analysis supports a two-tier architecture. CA Network Flow Analysis 9.1.2 also supports upgrades of three-tier architecture CA NetQoS ReporterAnalyzer 9.0.161 deployments. In both architectures, the components work together to collect, process, and store flow data; display the data in reports; and generate traps, events, and scheduled reports.
The two-tier architecture consists of the NFA console and one or more instances of the new Harvester--a combination of the previous Harvester and DSA components. The deployment footprint is reduced, so you have fewer component types to upgrade and maintain. In addition, data handling requires fewer steps and files are not transferred as often.
The three-tier architecture deployment consists of the NFA console, one or more Harvesters, and one or more DSAs. If you upgrade from a CA NetQoS ReporterAnalyzer 9.0.161 distributed deployment, you continue to use the three-tier architecture. You may prefer the three-tier architecture in an environment that has DSA servers with lower latency than the Harvester servers. The three-tier architecture also puts lighter storage demands on the Harvester servers.
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