Stand Alone NTA?

Our server admin is building a new netflow server and asking what needs to be done for the Solarwinds netflow to be installed on it.  We currently have a Solarwinds engine with multiple modules installed including NTA.

My understanding is that NTA is a module of Solarwinds, so it can't be stand alone on a separate server.  My initial search through the forum led to a question from 2011 where the answer was no.  Is this info still true?  Or is there a way to install NTA on a separate server from the main polling engine?