Information for all! Digitec seems to be randomly selecting these HDDs from the shelves when ordering. The 8TB is available in 2 versions, one with helium filling and one without. During the WD promotion, I ordered 8 for a NAS. I then received 6 normal and 2 helium. Unfortunately, I have no idea whether there is a price difference, nor whether it has an influence on the NAS operation. I will contact the customer service. By the way, the picture shows the helium version. That's why I'm a bit angry that I received 6 normal ones.