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Sony Launches Quad-Layer 128 GB Blu-Ray Discs

posted by martyb on Saturday November 10 2018, @09:34PM   Printer-friendly
from the Better-than-NAND? dept.

takyon writes:

Sony Releases Quad-Layer 128 GB BD-R XL Media

Sony is about to start selling the industry's first 128 GB write-once BD-R XL optical media. The discs will also be the first quad-layer BDXL media formally aimed at consumers, but bringing benefits to professionals that use BDXL today.

Although the general BDXL specifications were announced back in 2010 for multi-layered write-once discs with 25 GB and 33.4 GB layers, only triple-layer BDXL discs with a 100 GB capacity (generally aimed at broadcasting, medical, and document imaging industries) have been made available so far. By contrast, quad-layer 128 GB media has never seen the light of day until now.

As it turns out, increasing the per-layer capacity of Blu-ray discs (BDs) to 33.4 GB via a technology called MLSE (Maximum Likelihood Sequence Estimation) was not a big problem, and most of today's BD players and optical drives support the BDXL standard. However, increasing the layer count to four while ensuring a broad compatibility, signal quality across four layers, yields, and some other factors slow downed release of 128 GB BDXL essentially by eight years.

Related: Ultra HD Blu-Ray Specification Completed

Original Submission

 
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  • (Score: 5, Insightful) by archfeld on Saturday November 10 2018, @11:39PM (3 children)

    by archfeld (4650) <treboreel@live.com> on Saturday November 10 2018, @11:39PM (#760517) Journal

    I am curious about how long these things will store and still be recoverable. Also I wonder, having not read the article, about compatibility. Will my current BR player utilize the higher end multi layer disks or will I have to get a new 'multilayer' capable drive. I've got MP3 disks I created just a couple of years ago that fail to play now, and if I go to the trouble of transferring my precious Flying circus episodes, and scanned photos I want to know that they won't be junk in 12 months.

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  • (Score: 3, Informative) by takyon on Saturday November 10 2018, @11:57PM

    by takyon (881) <{takyon} {at} {soylentnews.org}> on Saturday November 10 2018, @11:57PM (#760521) Journal

    The discs should be compatible with drives supporting the BDXL spec, though a firmware update may be needed regardless.

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  • (Score: 0, Informative) by Anonymous Coward on Sunday November 11 2018, @03:25AM (1 child)

    by Anonymous Coward on Sunday November 11 2018, @03:25AM (#760552)

    Also I wonder, having not read the article, about compatibility.

    Good news! If you RTFA, you need wonder no more. The point is addressed, albeit superficially. (If you don't have the attention span to read five short paragraphs, you're probably a goldfish.)

    • (Score: 2) by archfeld on Sunday November 11 2018, @03:36AM

      by archfeld (4650) <treboreel@live.com> on Sunday November 11 2018, @03:36AM (#760556) Journal

      Good thing you had the time to waste in responding, but NOT answering the question. Dory is that you ?

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