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Nanocontact Magnetic Resistance Will Boost HDs

post #1 of 18
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http://www.theinquirer.net/default.aspx?article=39751
Quote:
WE'RE GOING TO GET a lot more bytes for our buck if work by Toshiba and Tohoku University comes to fruition.
They've jointly developed a new basic technology for magnetic read heads that give hard drives ten times the storage capacity. Data will be stored at densities in excess of 1 terabit per square inch of recording surface. You never know, these savings might even be passed on to the consumer. Well, not in the UK obviously. That's not the way things are done.

The technology uses Nanocontact Magnetic Resistance, or NC-MR, in which an enormous difference in magnetoresistance is achieved when two magnetic materials are situated close together and connected by a contact point that narrows to around 1nm. A prototype thin-film NC-MR structure fabricated by the research group exhibited a magnetoresistance ratio of 140% a room temperature.

Today's hard-drive read heads exploit giant magnetoresistance effects, as the large ratio boosts the sensitivity of the read head, which enables data to be stored at higher density on the hard disk.

The magnetoresistance ratio of the prototype NC-MR structure is twice as large as current read heads, which exploit the 'tunnel magnetoresistance effect'.

Elements based on the NC-MR structure have a lower resistance than existing TMR elements, enabling the read heads to be miniaturised and still operate quickly.

The upshot? Massive increases storage capacity. It's still at prototype stage though. All Toshiba has to do is combine this head reading trick with a data-writing technique (thermal-assisted magnetic recording) and apply these to a recording medium (bit-patterned media) and they're done. Toshiba hopes to have a practical technology for hard drives ready in five years, says Nikkei.net.

Five years! Imagine what the world will be like in five years. µ

Seagate has already developped thermal-assisted magnetic recording. These should be in there upcoming Barracuda 7200.11 in the next year or so. Now coupled with NC-MR, it will be possible for 20 to 100 fold in storage capacity. A 100TB hard drive is possible!
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post #2 of 18
0.0....
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post #3 of 18
zomg i want
post #4 of 18
yeah, I am hoping that Toshiba doesn't sell the perpendicular technology to Apple for the iPod, because then they could make a player for their own that holds way more.
I will definitely buy one for my pc tho.
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post #5 of 18
Quote:
Originally Posted by DuckieHo View Post
http://www.theinquirer.net/default.aspx?article=39751



Seagate has already developped thermal-assisted magnetic recording. These should be in there upcoming Barracuda 7200.11 in the next year or so. Now coupled with NC-MR, it will be possible for 20 to 100 fold in storage capacity. A 100TB hard drive is possible!
hmm..

i think il take a "single platter hd at like 15k rpm with a 20 fold storage with alot of cache and low access times over a 4-5 platter hd with 100 fold storage....

think about it. each platter would increase the risk of failure.... thats why raptors/server hd's pwn they are fast and reliable (only expensive and small.....)

this could all change!

id gladly take a few 2-6 sata II hard drives with single plater with ultra size/speed/reliability

this is all based on the belief that raptors are single platter drives... correct me if im wrong

great link btw! interesting read
    
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post #6 of 18
but...wont that mean that access time will be like 2 hours for finding some files??
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post #7 of 18
well this is a great plus for media ppl.

maybe i won't have to keep putting all my CD and DVD backups onto little discs again lol.
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post #8 of 18
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Quote:
Originally Posted by wolfschanze View Post
but...wont that mean that access time will be like 2 hours for finding some files??
No, it is the opposite. Performance increases as data density increases. Just check the Barracuda 7200.10 performance. The slowest part of the hard drive is moving the head into place. How fast it moves has not changed in 4+ years. However, since the data is denser... it can now read a block of data faster. Same amount of platter and head movement but more data read/written.
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post #9 of 18
Quote:
Originally Posted by DuckieHo View Post
No, it is the opposite. Performance increases as data density increases. Just check the Barracuda 7200.10 performance. The slowest part of the hard drive is moving the head into place. How fast it moves has not changed in 4+ years. However, since the data is denser... it can now read a block of data faster. Same amount of platter and head movement but more data read/written.
so even if the arm/motor dont move faster but the density increases 20-100 fold we will see dramatic access time decreases ?
    
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post #10 of 18
Thread Starter 
Quote:
Originally Posted by uberjon View Post
so even if the arm/motor dont move faster but the density increases 20-100 fold we will see dramatic access time decreases ?
Access time is dependent on the rotational speed (7200RPM, 10K RPM) and number of platters (more inertia means harder to control). Increase data density can decrease number of platters if manufacturers want performance hard drives. Access time should not change to drastically. However, access time is only one component of performance. The read/writes will improve due to data density.
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