Get ready for glass platter 3.5" HDDs

[BFG10K]

I found it interesting that glass platters seem to perfectly suit HAMR which is generally accepted as the next technology breakthrough for HDDs.

http://techon.nikkeibp.co.jp/atclen/news_en/15mk/090201556/

 

[thigobr]

Remembers me of the IBM Deskstar 75GXP and its glass platters, I only hope this time the HDDs will be more reliable
http://goughlui.com/2013/03/01/hard-drive-disassembly-the-ibm-deathstar/

 

[Elixer]

Heh, yeah, I was going to say, I recall have a few HDs that had glass platters.
If they use tempered glass now, those would be too heavy, so, they must be doing something special to the glass being so thin.

Hoya has already prototyped 0.5mm- and 0.381mm-thick substrates, enabling to house 10 and 12 substrates, respectively, in a 3.5-inch HDD whose thickness is about 1 inch.

I tend to think they must mount these in a special chamber to prevent knocks/drops from shattering the glass.

 

[Charlie22911]

I think it will be fine, the industry has had plenty of experience from making glass platters for 2.5 inch spinning rust.

 

[Red Squirrel]

Should be interesting to see how this works out, a 3.5" platter will have a much higher velocity on the outer edges and over all more mass to move so it's a slightly different ball game than 2.5".

And holy crap 20TB on one drive. Crazy how they've gotten density so high now. I remember reading something around the time the first 1TB drive came out saying that they are starting to hit a point where they can't go too much denser due to various material restrictions, magnetics etc. But they were able to do it.

Definitely want to use raid (and backups) with drives like this though, that is a lot of data to lose access to in one shot if it fails.

 

[BFG10K]

Definitely want to use raid (and backups) with drives like this though, that is a lot of data to lose access to in one shot if it fails.

I think it's a given that you should always backup your data, regardless of a drive's size.

 

[ElFenix]

Heh, yeah, I was going to say, I recall have a few HDs that had glass platters.
If they use tempered glass now, those would be too heavy, so, they must be doing something special to the glass being so thin.


I tend to think they must mount these in a special chamber to prevent knocks/drops from shattering the glass.

we've been making stronger, tougher, thinner glass for phones for 10 years now, so i suspect the reliability from platter issues is probably an order of magnitude better than whatever IBM was doing with the deathstars back in the day.