Thursday, December 18, 2014
Search
  
Submit your own News for
inclusion in our Site.
Click here...
Breaking News
Facebook And Android Top Digital Trends For 2014
Your Next Car Could Have Android Inside
North Korea Linked To Recent Sony Hacking
Sony Global Education Established
CEA and Japan Audio Society to Jointly Promote Hi-Res Audio
Intel, IBM Follow Different Strategies On 14nm FinFET
Toshiba Announces 6TB Enterprise Capacity HDD Models
WebOS 2.0 Smart TV Platfom To Debut At CES
Active Discussions
Windows xp
Will there be any trade in scheme for the coming PSP Go?
Hello, Glad to be Aboard!!!
Best optical drive for ripping CD's? My LG 4163B is mediocre.
Hi All!
cdrw trouble
CDR for car Sat Nav
DVD/DL for Optiarc 7191S at 8X
 Home > News > PC Parts > Hitachi...
Last 7 Days News : SU MO TU WE TH FR SA All News

Tuesday, February 02, 2010
Hitachi HDD Technology Achieves a Storage Density 2.5 Terabits Per Square Inch


Hitachi, Ltd. announced that it has achieved a storage density of the 2.5 terabyte per square inch on a hard disk drive by applying a new technology in the magnetic head of the system.

The new density is five times higher than the one currently met in commercial HDDs.

Hitachi's technology is based on the thermally-assisted recording concept, in which magnetic grains can be made smaller while still resisting thermal fluctuations at room temperature.

As the name suggests, thermally-assisted recording uses a laser to heat up the media while the magnetic head is writing the smaller bits of data. This enables the use of media that is magnetically stable at room temperature with the very small magnetic grains required for high-density storage.

Hitachi has developed a thermally-assisted magnetic recording head assemply comprising of a light source module and a magnetic recording head. The basic feature of the ssytem is light source module, which outputs a ultra-small light beam with a diameter of just 20nm or less.Hitachi said that by using an appropriate disk medium, the system can form bits of 28nm width and 9nm length - enough to ensure stable recording The size of the formed bit is equivalent to a recording density of 2.5 terabits per square inch.

Progress in the hard disk drive industry has most notably been tied to the exponential growth in areal density and the ensuing increases in capacity and reductions in bit cost ($/GB). HDD manufacturers have to keep on ramping up capacity to keep a cost/GB advantage over the oncoming flash memory technology. Physics predicts that today?s conventional continuous-film perpendicular magnetic recording is approaching a fundamental limit of around 1 Tb/in2. As a result, new technologies are required to extend magnetic recording.

Significant R&D is being spent on several new techniques, including discrete track recording, bit-patterned recording, energy-assisted recording such as the one Hitachi has annoucned today, and shingled magnetic recording. Each of these new technologies promises gains in areal density but each has its own challenges that must be overcome to enable them to be introduced into mass production, meaning in high volume with acceptable reliability and performance and at minimal incremental cost.

Energy-assisted recording media may be much too expensive and the cost/GB of flash memory could cross over that of disk in a very few years. If the short write life problem and relaibility of flash media be overcome, flash drives will most probably make significant inroads into data centres, putting HDDs aside.


Previous
Next
Google's Tablet PC Prototype Appears In Youtube Video        All News        Microsoft's SideWinder X4 Keyboard Debuts Anti-Ghosting Technology
Google's Tablet PC Prototype Appears In Youtube Video     PC Parts News      Microsoft's SideWinder X4 Keyboard Debuts Anti-Ghosting Technology

Get RSS feed Easy Print E-Mail this Message

Related News
Hitachi Wearable Device Monitors Brain Functions
Hitachi Technology Stores Digital Data In 100 Recording Layers, Data Can be Stored For 300 million Years
ASTC Says 100 TB HDDs Coming in 2025
Toshiba Offers New 4TB and 5TB Desktop HDDs
New WD My Passport Portable Storage Drive Has Wireless Function And SD Card Slot
Western Digital Introduces 6 TB NAS Hard Drive, Seagate Starts Sampling 8GB Models
HDD Market Seen To Post Modest Growth in 2014
HGST Debuts Touro S Mobile External Hard Drives, 15K RPM Enterprise-class Ultrastar C15K600 family
Hitachi HDDs Have The Lowest Failure Rate: report
Hitachi Combines SSD Tier And SSD Cache Methods in Tiered Storage Systems
SDK Starts Shipments of 2.5-Inch 670GB HD Media
Scientists Unveil Million-Year Data Storage Disk

Most Popular News
 
Home | News | All News | Reviews | Articles | Guides | Download | Expert Area | Forum | Site Info
Site best viewed at 1024x768+ - CDRINFO.COM 1998-2014 - All rights reserved -
Privacy policy - Contact Us .