Files, Backup and Resource Monitor
Within the NAS you can see the folder and file structure on the content on the NAS. This includes folders you've hidden from the public.
The file structure makes setting up more advanced features easier. Here we see the backup and restore section of the software.
You can even backup and restore your backup and restore configuration.
In my office, I have several folders setup to sync with the NAS. This way I know if my notebook SSD fails, all of the data is kept safe on the NAS.
You can even keep your folders in sync from remote locations. The EZ-Internet Wizard will program your uPnP router, a task that even I can only attempt to do, usually without success manually.
If you're in an office and worried about recent growth you can peer inside the Resource Monitor and observe how hard your NAS is working.
If your office grows you may need to upgrade to a higher performing model or add another NAS.