Hard Drive Tech

Spinning rust, something we might know hard drives by, has seem some advancements. Seagate announce a while back ago about 10GB HDD (http://www.pcworld.com/article/3096292/storage/seagates-10tb-barracuda-pro-is-the-worlds-largest-consumer-hard-drive.html). Their drive doesn’t use helium to reduce drag (more drag = more power used). Now, if their are some helium based HDDs that run cool and lower power and high storage capacities, but still not as much at 10GB, OK they come close! Now I remember in the past about using a come table salt in HDDs )(https://www.wired.com/2011/10/hard-drive-space-salt/). What if they combined them, and also gave them four independent arms to give ~4x more performance?