have you looked at "-u" parameter of server_archive ?
Hi, I want to migrate a cif server from a filesystem to a new one. original fs is 16TB, the new fs 5TB. I'm currently copying the data using server_archive -r -w -J options But I was wondering if there's any option to copy just the new files after the initial copy is finished. From what I could see nas_copy (I think it was) does have an option to do that but both fs should have the same size. So if there's no other option I'll use robocopy.  Thanks
Migrating a CIF server to a new filesystem - Delta files