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Seagate achieves 6.9TB storage capacity per platter
- Neywiny 11mo ago> Seagate is leveraging its heat-assisted magnetic recording (HAMR) technology to deliver its 6.9TB platter. If you want to check out how Seagate's HAMR technology works, check out our previous coverage. In a nutshell, HAMR uses heat-induced magnetic coercivity to write to a hard drive platter. Wow so heat assisted magnetic recording is using heat to magnetically record data. Incredible explanation.
- _wire_ 11mo agoMofo magnets! How do they work? With heat?!
- dylan604 11mo agoWe prefer steam over magnets especially since nobody knows how they work, but whatever you do, don't get the magnets wet!
- wmf 11mo agoYeah, don't try to learn science from Tom's Hardware.
- puzzlingcaptcha 11mo agoI guess you could say that MiniDisc was the original HAMR format.
- retrac 11mo agoHeating a ferromagnetic material lowers it coercivity -- the heat softens it and makes it less magnetically "springy". And if heated enough it fully loses its magnetization. So, to write, zap the area with a laser to heat it up. The coercivity is lowered. This lets a weaker magnetic field work to magnetize the area. This allows packing more densely, as the weak field will not affect the neighbouring cooler and higher coercivity regions. (I think.) This is not the first time lasers have been used to write to magnetic media. Magneto-optical discs (e.g. Sony's MiniDisc) were erased using laser heat. (MO discs also were read with laser, the ferromagnetic material used had different optical properties depending on magnetization.)
- almosthere 11mo agoI just bought a 2tb SSD drive that's the size of a tictac container...
- Octoth0rpe 11mo agoSure. And you paid, what, maybe $120? so, $60/tb. When seagate commercializes these, it'll be around $10/tb. My last seagate spinning disks for my nas were 20tb for $150. SSDs have a valuable place in the world, but so do spinning disks. Physical size isn't a concern for my nas (I mean, assuming we're talking < 300cm^3 for the whole setup..), but $/tb is.
- PunchyHamster 11mo agoAlso far lower chance to lose your data on HDD if left in a shelf for 3 years
- commandar 11mo agoSpinning rust still typically holds advantages for archival storage, as well. There was literally a headline on the front page here a few days ago re: data degradation of SSDs during cold storage, as one example.
- Razengan 11mo ago> Data degradation of SSDs during cold storage Why is that? I'd have expected solid-state electronics to last longer at low temperatures. Or is it precisely that, some near/superconductivity effects causing naughty electrons to escape and wander about?
- arcanemachiner 11mo agoBy cold, I think they mean "powered off", not "low temperature".
- khuey 11mo agoThey mean powered off, not physically cold. Electrons escape the NAND flash over time and if the device is not active it's not refreshing them.
- 1970-01-01 11mo ago>7TB to 15TB platters available from 2031 onward Isn't 0.1TB a little too low? I'm sure if they only improved this little in 5 years the company would be in big trouble.
- martinpw 11mo agoFrom the article: these 6.9TB platters are still in development and are not planned to be used for another 5 years.
- jtokoph 11mo agoI wonder what the lifespan, error rate and speed of these drives are
- Yokolos 11mo agoProbably no different than current drives? Who would pay more for worse drives? Particularly in enterprise, where defect rates and error rates make a much bigger difference and quickly add up across such a large number of drives.
- cookiengineer 11mo ago> Probably no different than current drives? Who would pay more for worse drives? Particularly in enterprise, where defect rates and error rates make a much bigger difference and quickly add up across such a large number of drives. Western Digital would like to have a word about shingled magnetic recording drives.
- anonymars 11mo agoHa, the ones they mixed in with conventional drives, while still giving them the same model names and numbers? That was a good time, thanks WD
- gruez 11mo agoSMR drives aren't worse in any of those metrics except random writes. Yes, people running NAS with them got screwed over, but for your typical use case of storing movies they're fine.
- anonymars 11mo agoMaybe, maybe not? https://www.tomshardware.com/pc-components/hdds/wd-launches-investigation-into-problems-with-its-smr-hard-drives-the-same-drives-that-got-wd-sued-in-2021-now-reporting-failure-rates-due-to-fundamental-flaws https://www.tomshardware.com/pc-components/hdds/wd-launches-...
- 11mo ago
- Razengan 11mo agoThe perfect number. The ideal has been achieved. We need go no further.
- znpy 11mo agoWe just need to fit 420 platters per drive now
- typcalredditusr 11mo ago[dead]
- 9cb14c1ec0 11mo agoWhen we are getting the DNA storage we'll all been promised?
- geor9e 11mo agosend them your 750 bytes in ATCG format https://www.genscript.com/gene-fragments.html https://www.genscript.com/gene-fragments.html
- cwalkatron 11mo agonice
- system2 11mo agoWhat is the theoretical limit of a standard-sized platter? ChatGPT thinks 50 TB max. Some forums say petabytes. Is there a known limit for it? I can't find much on the internet about the maximums.
- londons_explore 11mo agoPractically we are nowhere close to the limit if you can record in 3d not just on the surface as all current drives so.
- retrac 11mo agoA single iron atom can be a magnetic domain. So a surface coated with single-atom domains, spaced a few atoms apart. I would posit that's close to the 2D limit because of physics. They can't be directly next to each other or it's impossible to read or write them. So very roughly, about 1 bit per square nanometre. Which unless I'm dropping an order of magnitude (very possible) is about 10 petabits per square centimetre, and with about 300 square centimetres for a 3.5" platter that's 3 exabits or so per side of platter. Whether it will ever be possible to actually read or magnetize domains that small without interfering with the neighbouring domains is the question and no one knows. There have been several breakthroughs, like perpendicular recording, that have brought us much closer to the theoretical limit above, than anyone would have thought.