geologyMcAfee SECURE sites help keep you safe from identity theft, credit card fraud, spyware, spam, viruses and online scams

Home » New Use for Helium


A New Use for Helium


A hard drive sealed in helium has enormous performance advantages over the standard hard drive.


Why Helium?



Helium has the lowest density and lowest specific heat of all nonflammable substances. These two characteristics make helium the gas of choice for many specialized uses. Its primary use is as a coolant in magnetic resonance imaging (MRI) machines. That use has created a strong demand for a natural gas byproduct that can be produced in just a few parts of the world with unusual geologic conditions.

Now another use could begin to consume this rare gas even faster. Western Digital has produced the first computer hard drive sealed in a helium atmosphere. The drive was designed for use in data centers where hundreds or thousands of computers are operating.

Why helium? Helium has just 1/7 the density of air. This sealed helium drive produces less air turbulence, which in turn saves power consumption, produces less heat, produces fewer vibrations, makes less noise, allows greater drive capacity and results in a much lower total cost of operation. The drives are expensive to manufacture, but that cost is recovered in energy savings and performance gains.

Related:   Helium: A Rare Natural Gas Byproduct


Lower Turbulence



Compared to air, helium's lower density allows the drive to spin with much less turbulence. The lower level of turbulence allows the motor to turn the drive with a power consumption savings of 23%. And, the lower level of turbulence allows seven platters to operate in a one-inch high drive, instead of five. This increases the storage capacity of the drive by 50 percent - from 4 TB to 6 TB - and increases the storage capacity of a server and its weight per TB.


Less Noise



The lower level of air turbulence inside of the drive will reduce the amount of vibration produced by the spinning platters. The lower vibration level has been found to reduce the amount of noise produced by the drive by about 30%.


Less Heat



The lower turbulence within the drive means there is less friction produced between air molecules. This allows the drive to operate at a temperature that is about 4 degrees Celsius cooler within the drive. This means that the drive will shed less heat into the data center and lower the amount of air conditioning required - which results in another way to save power.


The Fugitive Gas Challenge



Producing a hard drive sealed in a helium environment was an enormous challenge. Why? Helium atoms are so small that they can seep through almost any material. Creating a case that will contain helium over a long period of time was the most difficult part of producing the drive - and the reason why helium drives did not go into use a long time ago.

The tightly-sealed case produces a few more advantages. Humidity, dust and other contaminants are kept out. This is expected to reduce drive failure rates and increase the average life expectancy of the helium drive.

The helium hard drive is an example of how using special materials creates special challenges but can result in exceptional savings.

A copy of the Western Digital (HGST) product announcement can be obtained here.


Contributor:



Find it on Geology.com




More from Geology.com


Mount Cleveland
Mount Cleveland is an active volcano in the Aleutian Islands and a threat to air traffic.
uses of gold
The Many Uses of Gold: Unique properties make gold one of the most useful metals.
Novarupta
Wrong Volcano! The most powerful eruption of the 20th century was misidentified?
Mount Etna
Mount Etna: The most active volcano in Europe, continues an eruption that started in 2001.
Iris Agate
Iris Agate produces surprising colors when light passes through its thin bands.
Diamonds
Diamonds: Learn about the properties of diamond, its many uses and diamond discoveries.
Minerals
Minerals: Information about ore minerals, gem materials and rock-forming minerals.
Sliding Rocks
Sliding Rocks Mystery: What causes these rocks to slide across a Death Valley playa?




New use of helium
A hard drive running in a helium environment has many advantages over a hard drive running in air. Photo © iStockphoto, deepblue4you.


Uses of helium chart
Relative amounts of helium consumed by various uses in the United States during 2011. How will the consumption of helium for hard drives fit into this mix? Graph by Geology.com using data from USGS.




What Causes a Tsunami?
Vesuvius
Rare Earth Elements
Blood Diamonds
East Africa Rift
Rock Type Photo Gallery
San Andreas Fault
Mineral Rights



© 2005-2014 Geology.com. All Rights Reserved.
Images, code and content of this website are property of Geology.com. Use without permission is prohibited. Pages on this site are protected by Copyscape.