What files get stored onboard a controller?

[DLite]

At the top of the "Media" tab of Composer, my EA-5 reports that 80% of its total storage is in use.  (It showed that media artwork storage was near zero, which was the bar above the total storage.) I'm sort of puzzled, because we don't store music or video on the controller. The controller is set never to scan for new music, and we are a Sonos household.  

In general, what files get stored on a controller?  Is there a way for me or my dealer to see what files are on there, and maybe clean things up?

Thanks!

[mstafford388]

Operating system, audio files for announcements, artwork, etc.  There really isn't much space left on controllers after what's needed to run the OS which is fine because it doesn't store much else.  

[DLite]

1 minute ago, mstafford388 said:

Operating system, audio files for announcements, artwork, etc.  There really isn't much space left on controllers after what's needed to run the OS which is fine because it doesn't store much else.  

Ah, ok.  So, I take it that 80% utilization is nothing to worry about?

[mstafford388]

Nothing to worry about at all.