Does anyone know of any good third party tools that runs on the server to
analyze and produce a report of directories and files information on a
volume? NrM has similar tool called inventory but it runs forever and
also causes slowness access to files on the volume being inventory. I am
talking about 800-900GB of data and million of files per volume.

I tried TreeSizePro which runs on windows machine but it crashed after
certain size.

Please advice,