Orion NPM
I've been using Orion NPM for 9 years. I had the NTA module installed for a couple of years but I just uninstalled it last month because of performance and stabilitiy issues. For the last few months prior to my uninstall, NTA would break every week or 2 and would require a reinstall to get working.
Performance was an issue from the day I installed NTA (Netflow Traffic Analyzer). I would suggest that you make sure your database server is prepared to deal with the huge amount of netflow data. Obviously, my SQL server wasn't. After installing NTA, it took a minimum of 20 seconds for any screen refresh or page change when browsing Orion. When NTA started blowing chunks every week or two, that was the last straw and awayyyyyyy it went!
