Friday, August 3rd 2018

Seagate MACH.2 Multi Actuator Tech Enables 480MB/s HDDs

At the OCP summit this week Seagate and its partners revealed new proof points showing continued progress, solid results, and customer and industry adoption of the company's advanced HAMR and Multi Actuator technologies, which will be implemented in the near future in Seagate Exos enterprise hard drives.

Today Seagate said its new MACH.2 Multi Actuator technology has enabled them to set a new hard drive speed record, demonstrating up to 480MB/s sustained throughput - the fastest ever. Seagate formally introduced its MACH.2 Multi Actuator technology yesterday, which has now been deployed in development units for customer testing prior to productization. Read below to learn more.
Seagate's advanced engineering team also announced a breakthrough in the demonstrated reliability of its HAMR (Heat-Assisted Magnetic Recording) technology hard drives. Seagate revealed that its HAMR read/write heads have achieved unprecedented results in long-term reliability tests that surpass customer requirements by a factor of 20. Continue below for more details.

Partners work with Seagate to prepare HAMR and Multi Actuator technology deployment
Seagate's technology team reports at OCP that partners have begun integration development with both our HAMR and our MACH.2 Multi Actuator technologies. Several partners displayed these advanced technologies, the new Seagate Exos X14 drive, and Seagate Nytro Data Center NVMe SSD Series drives in their booth demos.

"MACH.2 Multi Actuator technology is an IOPS-per-Terabyte win for Seagate and for our cloud provider partners," said Tony Glavis, Seagate marketing initiative manager for Enterprise applications, discussing the collaboration with Microsoft. "Our purpose is to accelerate technology innovation for performance in the cost-sensitive storage tier - and MACH.2 does that by solving response time for the end user and enabling our cloud partners to attain SLA requirements. Continued advances in capacity with HAMR and increased IOPS with MACH.2 work together to improved cost efficiencies while sustaining performance."

MACH.2 Multi Actuator sets hard drive speed record
Seagate engineers have set a new record for how fast data can stream data off of a hard drive. With a Seagate hard drive equipped with its MACH.2 Multi Actuator technology, Seagate has demonstrated up to 480MB/s sustained throughput - the fastest ever from a single hard drive, and 60 percent faster than a 15K drive.

Seagate MACH.2 Multi Actuator technology doubles IOPS performance in a single hard drive by using two independent actuators that can transfer data to the host computer concurrently.


As higher areal densities on future hard drives put downward pressure on performance, Seagate's MACH.2 Multi Actuator technology will more than offset these pressures. That means customers with data-intensive applications will continue to enjoy the highest levels of hard drive performance, while they simultaneously keep up with the need to manage vast, ever-increasing quantities of data.

MACH.2 solves the need for increased performance by enabling parallelism of data flows in and out of a single hard drive. By enabling the data center host computer to request and receive data from two areas of the drive in parallel, simultaneously, MACH.2 doubles the IOPS performance of each individual hard drive, more than offsetting any issues of reduced data availability that would otherwise arise with higher capacities.

Seagate HAMR technology far exceeds customer reliability requirements
Today Seagate's engineering team revealed in its latest in-lab reliability testing, Seagate HAMR read/write heads have far exceeded industry standards, surpassing customer requirements by a factor of 20.

The industry's standard specification for nearline hard drive reliability anticipates that a drive will be able to transfer 550TB per year, or 2750TB total over a five-year period. On a hard drive with 18 read/write heads, each head is expected to transfer 152TB reliably over five years.

Seagate's development team has now demonstrated a single HAMR read/write head transferring data for 6000 hours reliably, equaling 3.2 Petabytes of data transferred on a single head. That's more than 20 times the amount of data required by the spec.

How does this translate to a HAMR drive deployed in a data center?


"On any hard drive meeting the industry specification, if all heads on the drive were writing 100 percent of the time in the field - which, of course, they do not - that would mean each head had written 152TB per head in total," explained Jason Feist, Seagate's director of Enterprise Product Planning. "Or to put it into Petabytes: the customer requirement is that a single head can write 0.152 Petabytes; we're already writing 3.2 Petabytes on a single HAMR head."

Together, Seagate HAMR and MACH.2 Multi Actuator technologies maximize drive capacity while maintaining performance levels above data center customers' specifications.

Why do we pursue these Advanced Technologies?
Imagine your entire datasphere - all the data that enables you to thrive, succeed, connect, remember and cherish those around you; now imagine you had to slice away 90 percent of all your data. Imagine a future world in which we can only preserve ten percent of our memories, ten percent of our knowledge, ten percent of our software applications. If you imagine all your data represented as a photograph, that photograph becomes a low-resolution, grainy, greyscale image at best.

That's the near future we'd face, without the combined advances of higher capacities made possible by HAMR and the fast access to this enormous data pool made possible by Seagate MACH.2 Multi Actuator technology.

Feist noted that HAMR and MACH.2 are just the latest crucial advances made by our scientists and engineers, part of Seagate's long history developing breakthrough enabling technologies.

"Our story does not end here," he said. "But what we do here sets up what we can give to the future. A world where history is more than a grainy shadow. And we're working with our partners to help us create and achieve this vision, together."

Seagate's HAMR and MACH.2 Multi Actuator technologies are on track to work together, enabling new-generation capacities and performance. These technologies are being implemented in the near future in Seagate Exos enterprise hard drives.
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39 Comments on Seagate MACH.2 Multi Actuator Tech Enables 480MB/s HDDs

#1
gmn 17
Now that’s superfast
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#2
dogsbody
gmn 17, post: 3879669, member: 100603"
Now that’s superfast
Yes, it almost saturates the SATA III interface.
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#3
dj-electric
Who cares about low latency and access time? That's for pussies. Speed is all about flexing to a copy of a 10GB video file
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#4
Tsukiyomi91
480MB/s sustained speeds on a platter drive is impressive. But the bigger question is: will it be cheaper than SSDs of similar capacity or there is no difference?
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#6
TheLostSwede
Tsukiyomi91, post: 3879689, member: 129086"
480MB/s sustained speeds on a platter drive is impressive. But the bigger question is: will it be cheaper than SSDs of similar capacity or there is no difference?
I think these will only come in large to very large capacity drives, as it's going to increase the cost of the drivers by 20-30% at a minimum. So no, they won't compete with SATA SSDs, as the storage capacity will be much larger.
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#7
R0H1T
cucker tarlson, post: 3879691, member: 173472"
And 2MB/s (random) 4K read/write.
And there goes Seagate's secret plan :D
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#8
Frick
Fishfaced Nincompoop
cucker tarlson, post: 3879691, member: 173472"
And 2MB/s 4K read/write.
Does it matter much for data centers? I have no idea, but I'd imagine sustained speeed is more important there.

How fast was the drive spinning, and what's the latency?
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#9
Tomgang
This might be one of the biggest leaps for hdd's since they where invented for over 50 years ago and prevent them from going extinct a bit longer now.


But they can still not compete with ssd in access time and responsness.
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#10
Chloe Price
14TB? Finally there's a HDD for all the cat pictures.
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#11
CheapMeat
Do you think they'll make 2.5" variants?
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#12
RejZoR
WD used dual actuator heads on Caviar Black drives for ages. How is this one different? Or in what way? 480MB/s is pretty nice but HAMR drives used to have crappier writes. Any info on that? Then again, it's enterprise drive, hardly anything relevant for consumer systems.
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#13
CheapMeat
RejZoR, post: 3879781, member: 1515"
WD used dual actuator heads on Caviar Black drives for ages. How is this one different? Or in what way? 480MB/s is pretty nice but HAMR drives used to have crappier writes. Any info on that? Then again, it's enterprise drive, hardly anything relevant for consumer systems.
From looking into it, the WD Caviar Blacks don't have dual heads. It's "Dual Stage Actuation". Which means this:

What this means is the primary electromagnetic actuator moves the head and arm roughly into position and then a secondary piezoelectric based actuator located on the arm itself fine tunes the head positioning with 500nm precision. To put this another way the conventional actuator is responsible for moving the whole arm and the piezoelectric actuator built into the arm allows the head to swing back and forth within a five track band without the need to move the whole arm and does so extremely quickly. http://www.hardwarecanucks.com/forum/hardware-canucks-reviews/24310-western-digital-caviar-black-2tb-hard-drive-review-3.html
The Seagate Dual Actuators is literally two separate head groups divided into two platter zones:


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#14
RejZoR
Aaaaah, now I see what they meant with multiu actuator. Its funny, anyone remembers when I was talking about HDD's with dual heads and everyone said it's pointless coz SSD's? Well, here you have it. A bit different design, but still. I guess it'll happen after all. And with such design, 4 independent heads, 2 per zone.
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#15
CheapMeat
It'll be interesting to see how it competes with QLC on price. I think HDDs have a higher bill of material price floor and now with dual actuators that price goes up. Hard to find a current made HDD under $40 regardless of size (at least new). On Amazon the differenec between 500GB and 1TB for 2.5" is just $5 (because of price floor). With HAMR density is going up of course and then there's the chart below. But I think long term, companies and consumers would pay $40 extra or whatever (just throwing a number) to get the 96-layer QLC SATA version in 2020+; there's just so many more benefits even on SATA bus. I think SSD BoM price floor is significantly lower and density can increase way more compared to any HDD even with HAMR; although first gen QLC SSD controllers will be more expensive than TLC controllers because of the 16 voltages a cell can be and the error correction involved and of course NAND price gouging going on but I think that'll quiet down.



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#16
RejZoR
But good luck finding a 14TB SSD... Capacity and price is still the combo in favor of HDD's. If your application requires cost efficient mass storage, HDD's are still the way if random access times aren't top priority.
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#17
CheapMeat
I mean 16TB QLC is what Samsung is doing with their M.3 / NF1 form factor. A 1U server can house half a petabyte (576TB). Here's their 16TB M.3:




I think only BackBlaze, Google & Amazon for cloud storage is going to care about getting the absolute most TB per $ to be cut throat pricing wise. I think it's much easier trying to increase density per rack unit with 2.5" QLC SATA drives than large 3.5" HDDs. I think most companies will be going towards reducing the amount of rack chassis while increasing density per chassis. Hopefully that'll benefit us. I can see first gen 1TB QLC SATA SSD being $100 at least; still a premium but not extreme. Then going down after that. Plus discount on bulk orders since $100-ish would be MSRP on Amazon/Newegg. Just rough estimating.
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#18
Mussels
Moderprator
So uh... isnt this just the same as two hard drives in RAID 0, in a 3.5" box?
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#19
R-T-B
RejZoR, post: 3879781, member: 1515"
480MB/s is pretty nice but HAMR drives used to have crappier writes. Any info on that? Then again, it's enterprise drive, hardly anything relevant for consumer systems.
HAMR does not have "crappier writes." You are thinking of shingled media (SMR).

Mussels, post: 3879846, member: 1746"
So uh... isnt this just the same as two hard drives in RAID 0, in a 3.5" box?
In some respects, yeah.
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#20
RejZoR
Forgot that was SMR indeed.
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#21
TheTechGuy1337
It really comes down to price for this. If they overprice the heck out of it. It won't take off for consumers, but if we get this integrated into cheaper model hdd....holy crap. That would be awesome. They said the first models would be for business grade hdd's. I will wait for a consumer model release and take it from there.
Posted on Reply
#22
Frick
Fishfaced Nincompoop
Mussels, post: 3879846, member: 1746"
So uh... isnt this just the same as two hard drives in RAID 0, in a 3.5" box?
Wouldn't that depend on how they are synced up? I imagine this has better latency and stuff as the controllers are closer, and I assume whatever you attach it to sees it as a single drive.
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#23
xorbe
Mussels, post: 3879846, member: 1746"
So uh... isnt this just the same as two hard drives in RAID 0, in a 3.5" box?
That's what I was going to say!
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#24
Disparia
In its first generation, Seagate’s Multi Actuator technology will equip hard drives with dual actuators (two actuators). With two actuators operating on a single pivot point, each actuator will control half of the drive’s arms. Half the drive’s recording heads will operate together as a unit, while the other half will operate independently as a separate unit. This enables a hard drive to double its performance while maintaining the same capacity as that of a single actuator drive.
Probably not synced, just the commands routed to their respective actuator. The head seek is killer while the scan is almost nothing. At worst, both heads are seeking and at best both heads are reading.

With only PR and no whitepapers around, I'm thinking more like two drives in JBOD.
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#25
John Naylor
The question I thing for most of the population is the same as SSDs. Will anything I do on a daily basis benefit from this ? For 99+% of users, the answer will be no.

-Will grandma be able to open her grandkids pics receives from their mother this morning ?
-Will the legal secretary be able to type an extra legal brief before 5 o'clock ?
-Will the CAD operator be able to draft up and extra room in some dudes mansion ?
-Will the stock broker have up to date info available to him any faster ?
-Will a gamer be able to reach an further save point before bedtime ?

For others ...

-Will it eliminate the need for a large SSD scratch disk for video editing ?
-What is the impact on rendering boxes ?
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