Wednesday, June 9th 2021

Researchers Deploy Graphene on HDDs to Enable up to 10x Density Increase With HAMR Technology

HDD manufacturers have tirelessly worked to reinvent the spinning drive technology (and sometimes topology) with increased storage density capabilities (potentiated by the development of technologies such as HAMR (Heat Assisted Magnetic Recording) and MAMR (Microwave Assisted Magnetic Recording). Researchers with the Cambridge Graphene Centre have collaborated with the University of Exeter, India, Switzerland, Singapore and the US to showcase how much life there might still exist in HDDs - if only graphene were to be used.

The research shows how a single graphene layer (researchers tested up to four layers) can be used as a replacement for multiple layers of carbon-based overcoats (COCs), which are deployed on platters to protect them from mechanical damages and corrosion. Current COC thickness stands at only 3 nm, but any existing space between platters presents a bottleneck to the number of platters (and thus storage density) that can be achieved in the HDD world. The researchers demonstrated that graphene enables a two-fold reduction in friction and provides better corrosion and wear protection than current state-of-the-art solutions. In fact, one single graphene layer reduces corrosion by 2.5 times. The researchers further demonstrated that graphene can still be deployed as protective layers in HAMR-totting HDDs - a feat that current carbon-based overcoats can't reproduce, as they fail at the high temperatures arising from the heat-assisted recording. Just one more feather on graphene's utility cap.
Source: Cambridge University UK
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20 Comments on Researchers Deploy Graphene on HDDs to Enable up to 10x Density Increase With HAMR Technology

#1
TumbleGeorge
What mean 10X in numbers? Today HDD's has 2TB per plate and up to 10 plates in flagship with 20TB volume. 200TB HDD's in 2030?

PS. Promises, promises, dreams, weed, illusions...delusions!
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#2
R-T-B
TumbleGeorgePS. Promises, promises, dreams, weed, illusions...delusions!
Because technology never advances... just look at me. I'm writing this from my telegraph.
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#3
zlobby
Sweet. Chia farmers rejoice!
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#4
ixi
People should know that if there will be 50TB hdd they gonna cost alot. For private sector DOA.
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#5
evernessince
ixiPeople should know that if there will be 50TB hdd they gonna cost alot. For private sector DOA.
Seagate already has 50TB (50+ actually) HDD on their roadmap for 2026 and has R&D using bit patterned media to get to 120TB+.

I'm not sure how graphite media has the potential to impact the market but if it is as billed it can only serve to accelerate those goals.

As for the price that's anyone's guess.
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#6
Minus Infinity
Graphene smaphene, we want diamond coatings: go hard or go home.
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#7
s3thra
That’s a lot of space for all my… Linux ISO’s.
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#8
lexluthermiester
ixiPeople should know that if there will be 50TB hdd they gonna cost alot. For private sector DOA.
That statement directly implies that you don't seem to understand how market advancement works...

Here's the jist of it.

A new version of a product comes out, the older version(which was once top tier) then becomes more affordable and is eventually replaced entirely. Then another advancement takes place and the cycle begins again.

8TB drives used to be out of reach for the average consumer. Now they're easily affordable. 10TB & 12TB drive are getting more affordable by the month. The very pricey 14TB drives out now are out of reach for the average consumer but the prices for such drives have already started coming down.

That cycle is true for anything tech related. If you fail to understand this very simple concept, which you seem to, then some history is something you need to brush-up on..
Minus InfinityGraphene smaphene, we want diamond coatings: go hard or go home.
Not a great suggestion. The reason graphene is so promising is the fact that it's friction bias is very low. Diamond is not, relative to what is needed for HDD surfaces. With graphene it seems that damage caused by head impact events are greatly reduced. Diamond however, even though very hard, has a friction bias that makes it a poor choice for platter surface coatings.
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#9
TumbleGeorge
evernessinceSeagate already has 50TB (50+ actually) HDD on their roadmap for 2026 and has R&D using bit patterned media to get to 120TB+.
If Moore's law was alive this year(2021) had to be 128TB HDD on the market.
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#10
thesmokingman
Good stuff, these new applications of graphene. I like GMG's use of graphene in their aluminum ion batteries, and now here in hard drives.
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#11
Prima.Vera
But... I just want a 4TB SSD for cheap.... keep your rusting spins.
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#12
lexluthermiester
Prima.VeraBut... I just want a 4TB SSD for cheap.... keep your rusting spins.
Buy some QLC based crap. QLC 4TB drives are at a decent price. Durability will be problematic in a year or two, but whatever..
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#13
claes
Price/TB HDD goes down = price/TB of SDD goes down
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#14
Minus Infinity
lexluthermiesterNot a great suggestion. The reason graphene is so promising is the fact that it's friction bias is very low. Diamond is not, relative to what is needed for HDD surfaces. With graphene it seems that damage caused by head impact events are greatly reduced. Diamond however, even though very hard, has a friction bias that makes it a poor choice for platter surface coatings.
I love how these forums have lost all sense of knowing what's tongue-in-cheek. So sad we need need smiley's for everything.

BTW since you seem to know so much, coating diamond with graphene creates the perfect substance.
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#15
lexluthermiester
Minus InfinityBTW since you seem to know so much, coating diamond with graphene creates the perfect substance.
Actually, you're likely right.
Minus InfinityI love how these forums have lost all sense of knowing what's tongue-in-cheek.
It's too much effort and time trying to read minds. Emotes exist so people don't need to play guessing games and can greatly reduce misinterpretations of intentions.
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#16
ixi
lexluthermiesterThat statement directly implies that you don't seem to understand how market advancement works...

Here's the jist of it.

A new version of a product comes out, the older version(which was once top tier) then becomes more affordable and is eventually replaced entirely. Then another advancement takes place and the cycle begins again.

8TB drives used to be out of reach for the average consumer. Now they're easily affordable. 10TB & 12TB drive are getting more affordable by the month. The very pricey 14TB drives out now are out of reach for the average consumer but the prices for such drives have already started coming down.

That cycle is true for anything tech related. If you fail to understand this very simple concept, which you seem to, then some history is something you need to brush-up on..
Sorry, but you're wrong.

So then, when 3080 ti was released did 2080 ti get cheaper? When 2080ti was released did 1080 ti get cheaper? No they didn't. And you know that. They just stop making older models.

50TB hdd even in 10 years wont replace 2TB. 2TB hdd were already available prior 2010.

Currently we can buy from WD 500 GB caviar black hdd for 55$. So then why 500GB still costs so much? And don't tell me the mining, mining, oh and as well, duuude. It is WD caviar black.

8TB WD Black on site goes for 280 euros. I aint gonna agree that the price is "ok" for private sector if average buyer buys pc for 500-700euro.

Though the price isn't that bad neither for that huge storage. When it will be at 100euro then we can talk.

I bought in 2010. 2TB caviar black for 110 euro+/-. Currently in wd site you can buy 2TB caviar black for 105$ with discount. Without discount 121. Yep, things are getting cheaper as you described. New versions got released, but price is still the same.

Not to mention that every year inflation is happening.
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#17
lexluthermiester
ixiSorry, but you're wrong.
Keep telling yourself that. Everyone else, who lives in the real world, will continue on regardless of your misconceptions...
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#18
ixi
lexluthermiesterKeep telling yourself that. Everyone else, who lives in the real world, will continue on regardless of your misconceptions...
If you can tell me how to live in fake world, I'll gladly listen. I just gave you two good examples in previous comment. Nor do I see necessity to continue talking with you about this. Just moving further and further from topic.
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#19
lexluthermiester
ixiJust moving further and further from topic.
True... Moving on...
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