[john.cord]

Is there is reason caused by Kodi that after i boot a client all drives of the NAS gets busy? Is kodi by default set to scan some sort of file metadate or something?

Try with a "clean" .kodi ("mv .kodi .kodi.bak" and restart Kodi). This well ensure you have no additional add-ons, and using default settings. If problem guess away it's either a third-party add-on (watchdog?) or a setting (scan/clean library on startup?)

Ok, thanks. I will check this. Another Question. If the NAS is busy and Kodi doesnt get enough data for seamless video playback. Is there a possible case that the videoplayer drops frames instead of pausing playback and caching data for seamless playback?