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Toshiba Will Adopt Western Digital's Microwave-Assisted Magnetic Recording Approach for Hard Drives

posted by martyb on Monday December 10 2018, @09:54PM   Printer-friendly
from the MAMR-mia! dept.

takyon writes:

Toshiba plans to boost its hard drive capacities by using Microwave-Assisted Magnetic Recording rather than Heat-Assisted Magnetic Recording. The company could use the technology to produce an ~18 terabyte hard drive:

Toshiba, like Western Digital, is going to use Microwave-Assisted Magnetic Recording (MAMR) to escape the inability of current PMR tech to go beyond 15-16TB disk drive capacity. [...] Seagate has chosen to [increase capacities] using heat (Heat-Assisted Magnetic Recording or HAMR). Proponents of the MAMR approach say HAMR stresses the disk surface and read:write heads rendering the disk unreliable in the long-term. Seagate disputes this and has demonstrated long life HAMR read:write heads.

Western Digital has chosen MAMR for its future technology and now we know Toshiba is doing the same.

[...] MAMR uses 20 - 40GHZ frequencies and the [Spin Torque Oscillator (STO)] bombards a bit area with a circular AC microwave field, lowering its coercivity and enabling the bit value to be written (magnetic polarity changed as desired.)

It is reckoned that MAMR could lead to 4Tbit/in2 areal densities, beyond the 700 to 1,000Gbit/in2 used currently, and leading to 40TB drives.

Related: Western Digital to Use Microwave Assisted Magnetic Recording to Produce 40 TB HDDs by 2025
Seagate to Stay the Course With HAMR HDDs, Plans 20 TB by 2020, ~50 TB Before 2025
Seagate Plans 36 TB HAMR HDDs by 2022, 48 TB by 2024
Seagate Starts to Test 16 TB HAMR (Heat-Assisted Magnetic Recording) Hard Drives

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  • (Score: 2) by Snotnose on Monday December 10 2018, @11:38PM (2 children)

    by Snotnose (1623) on Monday December 10 2018, @11:38PM (#772634)

    Mid to late 90s, Someone had a 50 Meg, might have been 500 Meg, I've forgotten, hard drive. For $100. This was a helluva deal and I shot right down and bought one. Put in a drawer thinking that, in 6-12 months when my current drive filled up I'd open up the case and install it.

    Fast forward 6-12 months. Ended up buying a whole new machine (this might have been for Half Life 3, have to check dates tho). The hard drive had 4x the capacity for half the cost of the one in my drawer. Knowing me, I still have that drive in its shrink wrap in a box somewhere.

    --
    When the dust settled America realized it was saved by a porn star.
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  • (Score: 2) by Snotnose on Monday December 10 2018, @11:44PM

    by Snotnose (1623) on Monday December 10 2018, @11:44PM (#772638)

    (this might have been for Half Life 3,

    See how that S-curve works? Half Life 2 came out just 20 years ago, and Half Life 3 came out yesterday! Ain't my imagination wonderful?!!

    --
    When the dust settled America realized it was saved by a porn star.

  • (Score: 1) by anubi on Tuesday December 11 2018, @01:41AM

    by anubi (2828) on Tuesday December 11 2018, @01:41AM (#772705) Journal

    Tell me about how fast tech advances...

    I still remember my excitement of discovering a pair of CalComp model 100 eight inch floppy drives at a swap meet... Then just as I finally got it running on my IMSAI, I was on the PC wagon.

    --
    "Prove all things; hold fast that which is good." [KJV: I Thessalonians 5:21]