Ultrastar He6


HGST delivers the world’s first hermetically sealed, helium hard drive, the Ultrastar® He6 for massive scale-out environments. Why does helium make a difference? Helium has only one-seventh the density of air. Replacing air with helium inside a hard drive dramatically reduces the turbulence caused by the spinning disk, cuts power consumption and results in a lower temperature within the disk drive.

The reduction in turbulence for the spinning disk allows HGST to offer a seven-disk design in a traditional 3.5-inch form factor. In addition to being the world’s first helium-filled hard drive, HGST Ultrastar He6 is also the first hard drive in the industry to offer a 6-terabyte capacity. This design delivers a 50% capacity gain and still reduces the energy needed to run the drive by up to 23%.



• Highest capacity HDD on the market; 6TB, seven-disk design, providing the best TCO
• Lowest power consumption with best watts-per-TB
– 23% lower idle power per drive
– 49% better watts-per-TB
• Best density footprint in a standard 3.5-inch form factor
– 50% higher capacity
• Lighter weight than a standard five-disk 3.5-inch drive
– 50g lighter even with two more disks, offering 50% more capacity
– 38% lower weight-per-TB


• High-density data centers
• Massive scale-out data centers
• Containerized data centers
• Nearline storage applications
• Bulk storage
• Enterprise and data center applications where density and capacity are paramount

Technical Specifications

Ultrastar He6