Graphene and HAMR combo bring HDDs the potential for ten times more storage capacity
Over the years the bottleneck for HDDs have been their mechanical nature, access times and performance overall compared to SSDs are slow. However, the two things that HDDs have still going for them are price and volume. In Recent years we've seen tech like HAMRevolve, expanding volume sizes.
Researchers at the University of Cambridge say they have managed to increase the achievable data density tenfold with the help of graphene. Hard drives use a carbon-based overcoat to protect the platter from read and write heads and other factors. To increase storage capacity, manufacturers have reduced the space between the head and the platters. Today it is about 3 nanometers thick, which has increased the density to about 1 TB per square inch.
The researchers replaced this coating with a variant of graphene, containing one to four layers of the material. After measuring corrosion, thermal stability, surface smoothness and lubricant handling, they concluded that graphene reduces friction by a factor of two and causes two and a half times less corrosion. Hamr heats the iron-platinum alloy platters to high temperatures that regular coatings cannot handle. Graphene in combination with hamr should be able to lead to a data density of about 10 TB per square inch.
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Senior Member
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Joined: 2012-11-10
Great stuff, but please give us 10x transfer rates as well, otherwise it will takes days to populate/empty!
Even backing up a drive will put it out of action for so long, it wont be viable for many.
With smaller drives, parallel backup operations make it feasible.
If we're talking contiguous sequential reads, it should be about 10x faster. Random reads could be disastrously slow though.
I'm sure these drives will only be on SAS, since that manages higher transfer speeds than SATA.
In either case, I'm sure these drives will still be horribly slow to back up. They might actually be better to back up to.
Senior Member
Posts: 971
Joined: 2015-06-27
Great stuff, but please give us 10x transfer rates as well, otherwise it will takes days to populate/empty!
Even backing up a drive will put it out of action for so long, it wont be viable for many.
With smaller drives, parallel backup operations make it feasible.
Modern hard drives are 250-260 mb/s its not THAT slow, its kinda half of SATA SSD speed, of course thats for sequential speeds, but thats what HDD used today to archive, to keep your movies/tv collections, game isos and so on.
Senior Member
Posts: 12897
Joined: 2003-05-24
Great stuff, but please give us 10x transfer rates as well, otherwise it will takes days to populate/empty!
Even backing up a drive will put it out of action for so long, it wont be viable for many.
With smaller drives, parallel backup operations make it feasible.
IF they could do that SSD drives would hella of alot cheaper.... and then there would truely be war of who can do faster and cheaper.... and we would not have SSD more then double the price for same hdd capacity. among other things..
Senior Member
Posts: 13564
Joined: 2010-05-22
Only at the start of the drive.
Average speeds are much lower and end of drive is about 1/2 the max.
And small files dont get anywhere near that.
Senior Member
Posts: 13564
Joined: 2010-05-22
Great stuff, but please give us 10x transfer rates as well, otherwise it will takes days to populate/empty!
Even backing up a drive will put it out of action for so long, it wont be viable for many.
With smaller drives, parallel backup operations make it feasible.