All supported Network Observability DX NetOps Performance Management Data Aggregator releases
The /etc/DA.cfg file remains on the server. It holds the required installation details.
When uninstalling the Data Aggregator normally the documented steps found in the Uninstall the Data Aggregator documentation topic work.
Sometimes files are left behind requiring manual removal before a new clean installation can proceed.
After following the documentation steps, if a new installation run acts like it's an upgrade, these additional steps should be taken. If the file or directory is no longer present, the uninstall script properly removed it.