Western Digital HGST's September unveiling of new hard drives
in which helium replaces the air inside the drives highlighted
future potential hard drive development. Replacing the air with
helium makes it possible to develop hard-drive capacity beyond the
five-platter, 3-TB to 4-TB capacity models now coming to market
while cutting the amount of power needed to spin the platters.
The helium-filled disks are expected to ship this year.