Your PXI-8146RT runs an FTP server, which could be leveraged to transfer files to a host PC while your application continues to run.
There is an FTP client in MAX and several available for free on the internet. Alternately you can open a web browser such as Internet Explorer and type ftp://www.xxx.yyy.zzz to access the PXI's file system. Then just copy/paste the files you want.