Thumbnails.... Where are they all stored?

Hi Guys and Gals, a question for you all. It may seem daft so please bare with me, I know where the cached thumbnails are stored if media is stored onto the hard drive of the hub,  so they are EXTREMELY quick to access and show, they are also stored in the same place if you plug an external hard drive, my question is where are they stored if you have all your media on a NAS? Because if I place my media on my internal, or external hard drive for that matter they show really quickly, but if my media is stored on my NAS they can seem to take forever to load. Is this a bug, or how the unit just works…?

Many many thanks as always…


Thumbs are only cached internally for NASs and you can’t not access them.  This is apparently how the FW is designed.