Hi...the solid purpose of the DSM (Synology OS) is the ease of use. I was thinking on the off chance that you could some way or another course the Syno's ordinary SATA association with a USB HD you'd get a sensible executioner use for a RasPi.
Force utilization will be incredibly low while it should have the option to go about as a DLNA worker for another RasPi associated with a TV and reinforcement for customer PCs.
IMO eventually simple programming will be significant for the RasPi to remain a triumph. Applications like this could contribute.