So it starts out as a 2.5" platter factory and transitions to nextgen 3.5"? Because even their data shows that 2.5" is rapidly going obsolete (and anyone willing to use platters doesn't care how obsolete they are).
15mm thick 2.5" drives are relatively common in rackmount servers. The smaller platters allow faster seek times, which might have some advantages in marginal cases where SSDs are still too expensive.
And while consumer 2.5" drives are fading fast, as long as they're being made the HDD companies are going to want to maintain rough process equivalence with their larger 3.5" models to minimize the number of unique parts they need to make. That's going to have smaller drives continue riding the density increase treadmill as bigger ones.
"Contemporary hard drives featuring perpendicular magnetic recording (PMR) technology use aluminum or glass media featuring CoCrPt–SiO2 nanogranular magnetic films. Researchers believe that next-gen HDDs that use ultra-high-density energy-assisted recording technologies (such as HAMR or MAMR) will have to switch to new types of media featuring magnetic materials with high magnetocrystalline anisotropy (such as L10–FePt, L10– CoPt, Nd2Fe14B, and SmCo5) particularly because the structure of the new media will have to ensure that grains used to record data are small enough, whereas the media takes into account extreme temperatures and other factors that occur during heat-assisted recording."
Platinum (Pt)? :/
I had no idea it was used in hard drives these days... That can't be very helpful when trying to control costs, can it?
In here: https://www.finishing.com/295/05p2.shtml someone roughly calculates-estimates the amount of Pt in a 3.5" platter to be 2.2mg per side. At current prices that's worth almost 6 cents.
Many of the problems with aluminum were largely fixed not long after glass substrates (and other reasons) nearly destroyed IBM's hard drive division with their popular and terribly unreliable 75GXP series. IBM got out of the hard drive business not long after.
IBM's GXP problems (deathstars) turned out to be _entirely_ down to poweron timer counters rolling over and the resulting mess scribbling over critical parts of NVR.
That mistake has been repeated a few times since then and not just by HDD makers
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wumpus - Thursday, February 14, 2019 - link
So it starts out as a 2.5" platter factory and transitions to nextgen 3.5"? Because even their data shows that 2.5" is rapidly going obsolete (and anyone willing to use platters doesn't care how obsolete they are).wumpus - Thursday, February 14, 2019 - link
- platters on a notebook or other 2.5" user. 3.5" users are another story (and increasingly are all datacenters).DanNeely - Thursday, February 14, 2019 - link
15mm thick 2.5" drives are relatively common in rackmount servers. The smaller platters allow faster seek times, which might have some advantages in marginal cases where SSDs are still too expensive.And while consumer 2.5" drives are fading fast, as long as they're being made the HDD companies are going to want to maintain rough process equivalence with their larger 3.5" models to minimize the number of unique parts they need to make. That's going to have smaller drives continue riding the density increase treadmill as bigger ones.
Beaver M. - Thursday, February 14, 2019 - link
2.5" drives are also much more reliable mechanically. If I only need small ones, I always buy them instead of 3.5".Samus - Friday, February 15, 2019 - link
that's true, especially in large JBOD's. there is less vibration from a 2.5" drive because the spun mass is much lower.boeush - Thursday, February 14, 2019 - link
"Contemporary hard drives featuring perpendicular magnetic recording (PMR) technology use aluminum or glass media featuring CoCrPt–SiO2 nanogranular magnetic films. Researchers believe that next-gen HDDs that use ultra-high-density energy-assisted recording technologies (such as HAMR or MAMR) will have to switch to new types of media featuring magnetic materials with high magnetocrystalline anisotropy (such as L10–FePt, L10– CoPt, Nd2Fe14B, and SmCo5) particularly because the structure of the new media will have to ensure that grains used to record data are small enough, whereas the media takes into account extreme temperatures and other factors that occur during heat-assisted recording."Platinum (Pt)? :/
I had no idea it was used in hard drives these days... That can't be very helpful when trying to control costs, can it?
sheh - Thursday, February 14, 2019 - link
In here: https://www.finishing.com/295/05p2.shtmlsomeone roughly calculates-estimates the amount of Pt in a 3.5" platter to be 2.2mg per side.
At current prices that's worth almost 6 cents.
saratoga4 - Tuesday, February 19, 2019 - link
The recording media is only a few dozen atoms thick, so the mass of material present is extraordinarily small.stoatwblr - Monday, July 13, 2020 - link
Not just Platinum. Ruthenium is used toohttps://www.preciousmetalscommoditymanagement.com/...
peevee - Friday, February 15, 2019 - link
Do they also build a facility for next-gen perforated cards?Sivar - Tuesday, February 19, 2019 - link
Many of the problems with aluminum were largely fixed not long after glass substrates (and other reasons) nearly destroyed IBM's hard drive division with their popular and terribly unreliable 75GXP series. IBM got out of the hard drive business not long after.stoatwblr - Monday, July 13, 2020 - link
IBM's GXP problems (deathstars) turned out to be _entirely_ down to poweron timer counters rolling over and the resulting mess scribbling over critical parts of NVR.That mistake has been repeated a few times since then and not just by HDD makers