Seagate Toolkit, the software that they use for automatic backups and mirroring on mac and windows, is not supported on linux. All file operations should still work, but extra features like that will not. You can see a bit more information on the One Touch (as one of their models with this exact issue) i’ve noted on the wiki page relating to this topic.
If you want, I can update that page with some more info - once you get trust level 1, you’ll be able to edit and add stuff to the page 