Storage

after-decades-of-talk,-seagate-seems-ready-to-actually-drop-the-hamr-hard-drives

After decades of talk, Seagate seems ready to actually drop the HAMR hard drives

e-pmr, HAMR, hdd, hdds, mozaic, mozaic 3+, Seagate, Storage, Tech, toshiba, Western Digital / /

How do you fit 32 terabytes of storage into a hard drive? With a HAMR.

Seagate has been experimenting with heat-assisted magnetic recording, or HAMR, since at least 2002. The firm has occasionally popped up to offer a demonstration or make yet another “around the corner” pronouncement. The press has enjoyed myriad chances to celebrate the wordplay of Stanley Kirk Burrell, but new qualification from large-scale customers might mean HAMR drives will be actually available, to buy, as physical objects, for anyone who can afford the most magnetic space possible. Third decade’s the charm, perhaps.

HAMR works on the principle that, when heated, a disk’s magnetic materials can hold more data in smaller spaces, such that you can fit more overall data on the drive. It’s not just putting a tiny hot plate inside an HDD chassis; as Seagate explains in its technical paper, “the entire process—heating, writing, and cooling—takes less than 1 nanosecond.” Getting from a physics concept to an actual drive involved adding a laser diode to the drive head, optical steering, firmware alterations, and “a million other little things that engineers spent countless hours developing.” Seagate has a lot more about Mozaic 3+ on its site.

Seagate’s rendering of how its unique heating laser head allows for 3TB per magnetic platter in Mozaic drives.

Seagate’s rendering of how its unique heating laser head allows for 3TB per magnetic platter in Mozaic drives. Credit: Seagate

Drives based on Seagate’s Mozaic 3+ platform, in standard drive sizes, will soon arrive with wider availability than its initial test batches. The driver maker put in a financial filing earlier this month (PDF) that it had completed qualification testing with several large-volume customers, including “a leading cloud service provider,” akin to Amazon Web Services, Google Cloud, or the like. Volume shipments are likely soon to follow.

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How can you write data to DNA without changing the base sequence?

biochemistry, Biology, DNA storage, epigenetics, Science, Storage / /

The developers of the system call each of these potentially modifiable spots on the template an epi-bit, with the modified version corresponding to a 1 in a conventional computer bit and the unmodified version corresponding to a 0. Because no synthesis is required, multiple bits can be written simultaneously. To read the information, the scientists rigged the system so that 1s fluoresce and 0s don’t. The fluorescence, along with the sequences of bases, was read as the DNA was passed through a tiny pore.

Pictures in a meta-genome

Using this system, Zhang et al. created five DNA templates and 175 bricks to record 350 bits at a time. Using a collection of tagged template molecules, the researchers could store and read roughly 275,000 bits, including a color picture of a panda’s face and a rubbing of a tiger from the Han dynasty, which ruled China from 202 BCE to 220 CE.

They then had 60 student volunteers “with diverse academic backgrounds” store texts of their choice in epi-bits using a simple kit in a classroom. Twelve of the 15 stored texts were read successfully.

We’re not quite ready for your cat videos yet, though. There are still errors in the printing and reading steps, and since these modifications don’t survive when DNA is copied, making additional versions of the stored information may get complicated. Plus, the stability of these modifications under different storage conditions remains unknown, although the authors note that their epi-bits stayed stable at temperatures of up to 95o° C.

But once these and a few other problems are solved—and the technology is scaled up, further optimized and automated, and/or tweaked to accommodate other types of epigenetic modifications—it will be a clever and novel way to harness natural data storage methods for our needs.

Nature, 2024.  DOI: 10.1038/s41586-024-08040-5

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Hang out with Ars in San Jose and DC this fall for two infrastructure events

AI, Biz & IT, dc, ibm, Infrastructure, san jose, Storage, Washington D.C. / /

Arsmeet! —

Join us as we talk about the next few years in AI & storage, and what to watch for.

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Photograph of servers and racks

Enlarge / Infrastructure!

Howdy, Arsians! Last year, we partnered with IBM to host an in-person event in the Houston area where we all gathered together, had some cocktails, and talked about resiliency and the future of IT. Location always matters for things like this, and so we hosted it at Space Center Houston and had our cocktails amidst cool space artifacts. In addition to learning a bunch of neat stuff, it was awesome to hang out with all the amazing folks who turned up at the event. Much fun was had!

This year, we’re back partnering with IBM again and we’re looking to repeat that success with not one, but two in-person gatherings—each featuring a series of panel discussions with experts and capping off with a happy hour for hanging out and mingling. Where last time we went central, this time we’re going to the coasts—both east and west. Read on for details!

September: San Jose, California

Our first event will be in San Jose on September 18, and it’s titled “Beyond the Buzz: An Infrastructure Future with GenAI and What Comes Next.” The idea will be to explore what generative AI means for the future of data management. The topics we’ll be discussing include:

  • Playing the infrastructure long game to address any kind of workload
  • Identifying infrastructure vulnerabilities with today’s AI tools
  • Infrastructure’s environmental footprint: Navigating impacts and responsibilities

We’re getting our panelists locked down right now, and while I don’t have any names to share, many will be familiar to Ars readers from past events—or from the front page.

As a neat added bonus, we’re going to host the event at the Computer History Museum, which any Bay Area Ars reader can attest is an incredibly cool venue. (Just nobody spill anything. I think they’ll kick us out if we break any exhibits!)

October: Washington, DC

Switching coasts, on October 29 we’ll set up shop in our nation’s capital for a similar show. This time, our event title will be “AI in DC: Privacy, Compliance, and Making Infrastructure Smarter.” Given that we’ll be in DC, the tone shifts a bit to some more policy-centric discussions, and the talk track looks like this:

  • The key to compliance with emerging technologies
  • Data security in the age of AI-assisted cyber-espionage
  • The best infrastructure solution for your AI/ML strategy

Same here deal with the speakers as with the September—I can’t name names yet, but the list will be familiar to Ars readers and I’m excited. We’re still considering venues, but hoping to find something that matches our previous events in terms of style and coolness.

Interested in attending?

While it’d be awesome if everyone could come, the old song and dance applies: space, as they say, will be limited at both venues. We’d like to make sure local folks in both locations get priority in being able to attend, so we’re asking anyone who wants a ticket to register for the events at the sign-up pages below. You should get an email immediately confirming we’ve received your info, and we’ll send another note in a couple of weeks with further details on timing and attendance.

On the Ars side, at minimum both our EIC Ken Fisher and I will be in attendance at both events, and we’ll likely have some other Ars staff showing up where we can—free drinks are a strong lure for the weary tech journalist, so there ought to be at least a few appearing at both. Hoping to see you all there!

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