Something like that. The typical storage system work as follow, there is one frontend server (head node) that store the full namespace of the filesystem, then when I try to access to access to a specific file, the head node redirect me to one of the disk server (disk node) that store really the file.
For example in my case I logged with WinSCP on the machine dpm-head.exp.infn.it using WebDAV via x509 certificate, and I can browse the filesystem properly, then when I try to download a file I receive the following error:
Error in file transfer
Resource WebDAV moved in 'http://dpm-disk03.exp.infn.it:9001/SE02e/belle/2018-07-21/ciao026.txt.27390045.0?token=kSMC9ykzdnIMhYrbSZClU7PRVcc%3D%401532678152%400&dav_sfn=%2Fdpm%2Fna.infn.it%2Fhome%2Fbelle%2FTMP%2Fbelle%2Fuser%2Fspardi
The browser can work properly with this kind of redirection.
Thank you again!