So you've now taken a look at the architectural differences and enhancements between Performance Analysis and Performance Investigator (if you haven't, check them out here). You've also hopefully been wow'ed by the new and enhanced features that Performance Investigator bring to market (if you haven't, check them out here). So how do you go about making the switch? This blog should answer that for you.
First off, something to keep in mind, technically there is no technical "upgrade" from Performance Analysis to Performance Investigator. Given the sweeping changes made in the products architecture, and the fact that the Performance Investigator Repository is a completely new technology, there was no way to seamlessly upgrade from PA to PI while maintaining configurations and historical data. Performance Investigator will be a net new technology, and repository, installed alongside your Foglight deployment. With that said, the installation process for Performance Investigator, being agentless and fully integrated into Foglight is a very simple process.
What we've done to soften this change for existing customers, is modify the Performance Analysis Client to be able to view legacy Performance Analysis data, out of the Middleware and Repository, even after the Performance Analysis Agents have been uninstalled. This allows customers to continue to leverage their Performance Analysis history, while they get comfortable with Performance Investigator, and let its repository fill with historical data. This allows for a recommended "side by side" installation process as defined below.
That should do it. The timing of these steps is entirely up to you, and your comfort level with Performance Investigator. Some customers will go through steps 1-3 in a few days, and then follow step 4 after a years worth of history has been collected, while other customers may choose a slower approach.
I hope you've found this three part series informative and useful. We are very proud of the Performance Investigator platform and cannot wait to hear all of our customers successes!