Feeds

HGST floats helium for low power, MASSIVE capacity HDDs

Up to seven platters in one drive

  • alert
  • submit to reddit

Boost IT visibility and business value

A new hard drive technology from HGST promises to improve drive performance in virtually every category, the company says – including capacity, power, cooling, and storage density – all because the drives are filled with helium instead of air.

"The benefits of operating a HDD with helium fill have been known for a long time," HGST CTO Steve Campbell said in a statement. "The breakthrough is in the product and process design, which seals the helium inside the HDD enclosure cost effectively in high-volume manufacturing."

Campbell said the helium-stuffing technology has been under development at HGST – formerly Hitachi Global Storage Technologies and now a Western Digital subsidiary – for more than six years, but it's now mature enough that the company plans to release products based on it next year.

Helium fill has several advantages for hard disk drives. For starters, helium is only about 14 per cent as dense as air, which means it causes much less drag on the spinning platters. That in turn means the motor requires substantially less power to spin them. According to HGST, a helium-filled drive consumes about 23 per cent less power than an equivalent air-filled drive.

Customers can expect even greater power savings on a per-terabyte basis, though, because helium-filled drives can also deliver greater capacity. Owing to the lower fluid flow forces within a helium-filled disk, HGST says it can cram up to seven platters into a single 3.5-inch drive enclosure (up from the previous maximum of five), effectively bringing the watts consumed per terabyte down 45 per cent.

Those extra platters could also mean some seriously monster-sized drives. HGST hasn't teased any specs for the products it plans to bring to market in 2013, but given that it has already released a few 4TB drives using five-platter technology, it wouldn't be unreasonable to assume that its first seven-platter spinners will top out at 6TB or even larger.

HGST says helium is also a better thermal conductor than air and it produces lower shear forces, allowing helium-filled drives to run an average of 4 degrees Celsius cooler than air-filled ones, in addition to running quieter.

Taken all together, the advantages of helium-fill drive technology should allow modern, storage-hungry data centers to cram in more terabytes per square foot than ever before, which is good news for cloud service providers everywhere. The question that remains is what will it cost?

In addition to being easy to seal into a hard drive enclosure, air is plentiful and cheap. By comparison, helium is not. Although boffins say the visible universe is overflowing with the stuff – only hydrogen is more abundant – the actual supply of helium available on Earth is relatively miniscule, accounting for only 0.00052 per cent of the atmosphere by volume.

Helium is valuable enough stuff that in 1996, the US Congress voted to begin selling off its strategic helium reserve to industry as a way to raise some cash – a plan criticized by the US National Academy of Sciences, which worried that not enough new sources of helium are being located.

Exactly what this will mean for the prices of helium-filled drives as compared to air-filled ones is hard to say. HGST has said little about pricing, except that the new tech "will cost-effectively extend the capacity and cost-per-gigabyte curve for many product generations to come."

Given the declining price of solid-state storage, however, to say nothing of other efforts to increase the capacity of spinning-disk drives, it's safe to say that Hitachi's helium-filled drives won't be the only technology competing for data centers' storage buck next year. ®

The essential guide to IT transformation

More from The Register

next story
The Return of BSOD: Does ANYONE trust Microsoft patches?
Sysadmins, you're either fighting fires or seen as incompetents now
Microsoft: Azure isn't ready for biz-critical apps … yet
Microsoft will move its own IT to the cloud to avoid $200m server bill
Oracle reveals 32-core, 10 BEEELLION-transistor SPARC M7
New chip scales to 1024 cores, 8192 threads 64 TB RAM, at speeds over 3.6GHz
Docker kicks KVM's butt in IBM tests
Big Blue finds containers are speedy, but may not have much room to improve
US regulators OK sale of IBM's x86 server biz to Lenovo
Now all that remains is for gov't offices to ban the boxes
Gartner's Special Report: Should you believe the hype?
Enough hot air to carry a balloon to the Moon
Flash could be CHEAPER than SAS DISK? Come off it, NetApp
Stats analysis reckons we'll hit that point in just three years
Dell The Man shrieks: 'We've got a Bitcoin order, we've got a Bitcoin order'
$50k of PowerEdge servers? That'll be 85 coins in digi-dosh
prev story

Whitepapers

5 things you didn’t know about cloud backup
IT departments are embracing cloud backup, but there’s a lot you need to know before choosing a service provider. Learn all the critical things you need to know.
Implementing global e-invoicing with guaranteed legal certainty
Explaining the role local tax compliance plays in successful supply chain management and e-business and how leading global brands are addressing this.
Build a business case: developing custom apps
Learn how to maximize the value of custom applications by accelerating and simplifying their development.
Rethinking backup and recovery in the modern data center
Combining intelligence, operational analytics, and automation to enable efficient, data-driven IT organizations using the HP ABR approach.
Next gen security for virtualised datacentres
Legacy security solutions are inefficient due to the architectural differences between physical and virtual environments.