[WORLDKINGS - Ideastime] Daily Highlights 24 May, 2022 – Western Digital Announces First 26TB Server Hard Drive


(Wcsa.world) Featuring SMR, helium instead of air, and a chunk of flash memory. Western Digital is set to launch its highest capacity hard drive, offering 26 Terabytes of storage space.

To reach this milestone, the company relied on a technology called Shingled Magnetic Recording (SMR) – which overlays neighboring data tracks on the disk platter on top of each other, like roof shingles. This approach helps increase capacity at the expense of writing speed, making the new drives especially suitable for long-term storage in cloud environments.

WD is also launching a 22TB conventional server drive and a new family of high-capacity NVMe SSDs for cloud applications that leverage the higher bandwidth PCIe 4 interface.

The announcements were made this week at the What’s Next Western Digital conference in San Francisco.

The 26TB Ultrastar DC HC670 features ten disk platters at 2.6TB each, achieving an industry-first in data density.


Like other high-capacity hard drives, it is filled with helium rather than air, since the inert gas offers less resistance. This simple property enables drive manufacturers to reduce power requirements, weight, disk vibration, mechanical wear, and internal temperature. WD started putting helium in some of its drives in 2013, while its main competitor Seagate joined the party in 2016.

And finally, the new drives leverage OptiNAND, a feature that replaces a small chunk of DRAM typically used in hard drives for a variety of caching operations with a larger chunk of flash memory that has the added benefit of keeping data intact in case of a power outage.


Looking to the future, WD said it was confident these technologies will enable it to produce hard drives with 30TB of capacity, and more. To ensure progress further along, the company continues to work on heat-assisted magnetic recording (HAMR) technology, which straps a tiny laser to the writing head in order to make the surface of the platter more receptive to magnetic effects.

Seagate appears to be further along with HAMR, launching the first commercial drives of this type in 2020.

Both the 22TB Ultrastar DC HC570 and the 26TB Ultrastar DC HC670 will begin shipping in the summer of 2022.

According to datacenterknowledge.com

Yun Ruan (Editor) - World Creativity Science Academy - WCSA