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InPhase Announces 300GB Holographic Discs

turboflux writes "After rolling out prototype holographic drives last year, ExtremeTech reports that InPhase has announced they intend to ship drives to commercial customers in 2006. InPhase originally intended on shipping the 200GB version of their media this year. Another article on Engadget mentions that 1TB discs will be available in 2009."

55 of 234 comments (clear)

  1. 300gb? by thegoogler · · Score: 4, Insightful
    i dont know about you.. but uhh.. that seems kind low, especially from previous estimates/articles.

    at least at this point, its looking like its actually worse than normal magnetic drives, i mean i expected intial drives to be at least 1.5tb

    1. Re:300gb? by sniepre · · Score: 3, Funny

      not to mention 1.0gb in 2009?? Who puts up with that kinda slow progress nowadays! In 2009 I'm expecting google's archive on a 2 disc set of (media) - none of this 1tb hosh-posh.

      --
      Is not life a hundred times too short for us to bore ourselves? -Friedrich Wilhelm Nietzsche
    2. Re:300gb? by LiquidCoooled · · Score: 2, Interesting

      Digging into the article, I get this:

      Holography stores data by using multiple light beams to create chemical reactions.

      To me, this seems not so different to the normal cd/dvd burning process.
      Shine light until you leave a mark, move one.

      This does not seem to be holographic in the sense we are expecting.

      --
      liqbase :: faster than paper
    3. Re:300gb? by Stachel · · Score: 5, Informative

      that seems kind low

      That is because

      Second-generation rewriteable products are due in 2007 or 2008, Murphy said

      Releasing 1.5 TB disks would satisfy the storage market immediately. They first get people interested in the 'low density' variant, then those people will become greedy again for the higher density versions in 2007 or 2008.

      --
      Stachel
    4. Re:300gb? by AstrumPreliator · · Score: 5, Informative

      It's sort of the same, but then again not really. From InPhase's website:

      Light from a single laser beam is split into two beams, the signal beam (which carries the data) and the reference beam. The hologram is formed where these two beams intersect in the recording medium.

      The process for encoding data onto the signal beam is accomplished by a device called a spatial light modulator (SLM). The SLM translates the electronic data of 0's and 1's into an optical "checkerboard" pattern of light and dark pixels. The data is arranged in an array or page of around a million bits. The exact number of bits is determined by the pixel count of the SLM.

      At the point of intersection of the reference beam and the data carrying signal beam, the hologram is recorded in the light sensitive storage medium. A chemical reaction occurs in the medium when the bright elements of the signal beam intersect the reference beam, causing the hologram stored. By varying the reference beam angle, wavelength, or media position many different holograms can be recorded in the same volume of material.

    5. Re:300gb? by bani · · Score: 2, Informative

      LTO has been doing 400gb tape (40MB/sec) for some time now.

      This product seems to be about 5 years too late to market.

    6. Re:300gb? by Anonymous Coward · · Score: 5, Informative

      "This does not seem to be holographic in the sense we are expecting."

      What sense were you expecting? A normal holographic image does precisely that, chemical reactions induced by light, it's the same basic principle as normal photography. The difference is that you use lasers (coherent phase background), and increase resolution to the point that you can store not just amplitude but relative phase information of the wavefront.

      The full wave front of light, including the relative phase is sufficient to recreate the entire wave, including all "3D information". This is known in physics as Huygen's Principle: http://en.wikipedia.org/wiki/Huygens_principle

    7. Re:300gb? by samael · · Score: 4, Insightful

      That, sadly, is the way things tend to go with tech. You get the initial announcement that new technology X is a billion times better than old technology Y, and will be ready Real Soon Now.

      Closer examination shows that Real Soon Now is, in fact, in about 5 years, by which point old technology Y has nearly caught up with new technology X. In addition the new technology has turned out to not be able to go into production quickly at its theoretical limits, but has to start out an order of magnitude slower/smaller.

      There's frequently then a switchover, with the new technology having more space to improve than the old one, but there tends not to be a sudden huge leap from 5MB hard drives to 50GB hard drives - there's almost always lots of little steps in between.

    8. Re:300gb? by rxmd · · Score: 4, Insightful
      at least at this point, its looking like its actually worse than normal magnetic drives
      Two words: removable media.

      This is not a hard drive replacement. Instead, it's for all those of you who don't know how to do backups from their 160GB harddrives without a DLT streamer or similar stuff.
      --
      As a state gets corrupt, its laws multiply; the most corrupt states have the most numerous laws. (Tacitus, Annales 3:27)
    9. Re:300gb? by springbox · · Score: 3, Insightful

      You should probably consider other aspects of this type of storage like.. Is it more reliable than current hard drives? Is it faster? Capacity should come after those two in my opinion. It probably won't take them very long to increase the size of this device after they release their first version anyway.

    10. Re:300gb? by Anonymous+Writer · · Score: 2, Interesting

      I vaguely recall hearing years ago about how holographic storage was being developed in the form of cubes or something. I presume it meant being able to store information in three dimensions rather than on a two-dimensional flat surface somehow, without any moving parts. I can also recall that optical processors were being developed that used light rather than electricity, which allegedly would have made them much faster. I've always thought that technology was going to develop to the point that computers could eventually be entirely optical, with optical processors and holographic storage - with no moving parts or electricity for those parts of the computer, except perhaps for the light source.

    11. Re:300gb? by poot_rootbeer · · Score: 2, Interesting

      They first get people interested in the 'low density' variant

      But CAN they do that at the 300GB capacity point?

      I can go out TODAY and build a RAID of mirrored 300GB winchester disks for about $500. What incentive do I have to wait around until next year for a non-rewritable storage format that will undoubtedly cost more and be more susceptible to errors?

    12. Re:300gb? by ABaumann · · Score: 2, Insightful

      The access time is pretty much the only good feature in these things. If I were to store regularly needed data, I'd prolly just use a Firewire 800 external drive. It's not disk-based like the holo drives, but Lacie already makes them in 1.5 terabyte sizes. They're almost 4 times faster (28MB/s vs 100MB/s) at read/write then the holographic drives, and they're considerably smaller, and prolly apt to be far cheaper. The only area that holographic drives would come in handy is when you need extremely large data sizes. 1 terabyte is gonna be pretty hard to fill up, and considering that this thing will take up about as much space as 2 or 3 Lacie drives, we're looking at something capable of storing 5 TB before it's at all worth it.

    13. Re:300gb? by SatanicPuppy · · Score: 2, Insightful

      Tape sucks. If I never have to haggle with another tempermental tape backup, I'll be a happy puppy.

      Whether this will be my long-wished for tape killer will depend on the cost of the media, and how long it can be stored before it starts to degrade.

      --
      ad logicam Claiming a proposition is false because it was presented as the conclusion of a fallacious argument.
  2. Finally by ShieldW0lf · · Score: 3, Funny

    Something that I can fit my music collection on!

    Where do i buy an mp3 player that can read these?

    --
    -1 Uncomfortable Truth
    1. Re:Finally by ShieldW0lf · · Score: 2, Informative

      160kbps? Yeah, and I download them on KaZaA too...

      EAC and --alt-preset extreme all the way. I don't listen to no steenkin 160kbps mp3s.

      --
      -1 Uncomfortable Truth
  3. HDTV / UHDV by valkoinen · · Score: 5, Insightful

    This could be the storage media for delivering HDTV content with extreme bitrates. Maybe not quite http://en.wikipedia.org/wiki/Ultra_High_Definition _VideoUHDV quality but hell of a lot better than even the largest blu-ray discs.

    Maybe digital movie theaters could use this to transfer and/or store the movies?

  4. Reply to previous poster by Rupan · · Score: 4, Informative

    Maybe you didn't read the article properly? The linked article states that "the recording material is 1.5 mm thick and is sandwiched between two 130 mm diameter transmissive plastic substrates". So from my take on this, it seems that they have a plate-like object (possibly see-thru... I can imagine GREAT case-modding...) that is VERY THIN. I could even imagine that perhaps several of these could eventually be sandwiched together into a sort of cube to create massive amounts of storage. You would have several thin read/write "heads" that would read the "plates" on each side of them. They say the timeframe for R/W media is 2-3 years. Exciting!

    --
    Ads? What ads?
    1. Re:Reply to previous poster by Xrikcus · · Score: 2, Informative

      two 130mm DIAMETER places. Hence it looks roughly like a CD I would assume, though if the recording layer is 1.5mmm presumably a fairly thick CD.

      Your picture backs that up as roughly a CD in a caddy.

    2. Re:Reply to previous poster by Anonymous Coward · · Score: 2, Funny

      The linked article states that "the recording material is 1.5 mm thick and is sandwiched between two 130 mm diameter transmissive plastic substrates". So from my take on this, it seems that they have a plate-like object (possibly see-thru... I can imagine GREAT case-modding...) that is VERY THIN.

      Dude.... you pretty much just described a CD. (1.2mm thick, 120mm diameter.)

    3. Re:Reply to previous poster by Terrasque · · Score: 2, Funny

      Sandwiched between two substrates each 130 mm "thin"?

      Or, as other pointed out, there are few universes where diameter is measured in height. This universe is usually not one of those.
      Did you think it was a ball?

      --
      It's The Golden Rule: "He who has the gold makes the rules."
  5. Re:O... kay... by 0x461FAB0BD7D2 · · Score: 4, Funny

    Oh I don't know. How about Google with its caches, those guys who like burying time capsules, and businesses and governments for backing up their data? I'm sure there are more, I just don't feel like marketing right now.

  6. Re:O... kay... by mccalli · · Score: 5, Insightful
    There are two kinds of people, either people with very low LAN connections and people who need a backup of their porn. Not much else use.

    Nonsense. I have immediate use for at least that much storage, for example. Lossless music storage, ripping of DVDs (I use an eyeHome for streaming to TV), offloaded Tivo recordings, full dumps of DV tapes from my camcorder for later editing - not a torrent or pr0n stash to be had.

    There's plenty of legitimate uses for large amounts of storage. Most revolve around AV it's true, but that AV needn't be swiped stuff from dodgy torrents or half of every posting ever to alt.binaries.redheads...

    Cheers,
    Ian

  7. Murphy said... by jdegre · · Score: 5, Funny

    You, guys, are not going to trust your vital data to someone called Murphy, are you? :)

    1. Re:Murphy said... by Anonymous Coward · · Score: 5, Funny

      I'd trust Robocop with my life, you insensitive clod!

  8. More technical info by the_pooh_experience · · Score: 4, Informative
    As per an optics and photonics news article I just read:
    "Three-dimensional volume holographic data storage is used in photopolymer media to potentially achieve storage densities of 1 Tb/in^2 with transfer rates greater than 200 MB/s. Such densities are enabled by a novel two photopolymer chemistry approach, in addition to special techniques for making exceptionally flat (lambda/10) surfaces that provide high storage densities in cubic pho6tololymer media with volumes of tens of mm^3."
  9. Re:'One million bits at a time' by doublebackslash · · Score: 3, Insightful

    No, you got it wrong, in stead of each read being 1 bit, each is one megabit. This makes for roughly 1GB (byte) or more per second.

    --
    md5sum /boot/vmlinuz
    d41d8cd98f00b204e9800998ecf8427e /boot/vmlinuz
  10. Re:O... kay... by Detritus · · Score: 2, Interesting

    I know people who could use this today. What would you rather have, a warehouse full of mag tapes, or a handful of holographic disks on a bookshelf?

    --
    Mea navis aericumbens anguillis abundat
  11. Re:'One million bits at a time' by nmg196 · · Score: 4, Informative

    No, *you* got it wrong. They do not state the transfer rate anywhere in the article. They never say that the "one million bits at a time" is "per second". They are simply saying that the mechanism can read 1 million bits at the same time in a single operation, in the same way that a digitial camera CCD "reads" 5 megapixels worth of data at the same time (it uses similar technology to read the holographic information).

    The article states that the "200-GB drive, the HDS-200R, would ship this year with a 20-Mbyte transfer rate". I assume the transfer rate will be roughly the same on the 300GB drive and not miracously increase to 1GB per second just because of a minor upgrade in data density.

  12. Optware system looks more practical/interesting... by Anonymous Coward · · Score: 2, Interesting

    I don't know what methods this uses, but my money is on the colinear Optware system. It is very simple in theory, and will
    provide very high bandwidth. (since it writes 52 bits at a time...) The 20MB/s transfer rate that Inphase lists is very unimpressive when considering discs 1TB in size.

    See http://www.optware.co.jp/english/top.htm for more info.

  13. You will be pleased to know... by Savage-Rabbit · · Score: 2, Funny

    ...that there are persistant rumors in the Mac/Apple community that there the existing line of iPods is about to be enhanced with a new addition, the: iPod 'Brick'. The new iPod will weigh in at a hefty 1,6 Kg but marketing research has indicated that it will nevertheless be popular as an antithesis to the diminutive iPod 'Mini'.

    PS. Dont tell anybody else we might get sued.

    --
    Only to idiots, are orders laws.
    -- Henning von Tresckow
  14. No multiplexing other than spatial ? by Cochonou · · Score: 5, Informative

    If the capacity is kind of "low" by holographic memory standards, it might be because this medium doesn't use any other kind of multiplexing beside spatial multiplexing.
    Basically, what we have here is a disc with several "holographic bits", scattered across the disc just like a regular compact disc. The main difference here is that when you read an holographic bit with the reconstruction beam, you get a full page of data (here, a 1024x1024 image - hence 1 Mbit).
    What is interesting with holographic memory is that when you use thick layers of holographic materials you can also multiplex the data using the angle of the reconstruction beam, or its wavelength. That means that you can hit the same area on the disc with the reconstruction beam at a different angle, and get a different page of data. Or use a different laser beam, and get again another page of data.
    Of course, this process seriously complexifies the hardware that must be used to read an hoographic medium, but it is the key to reach tremendous densities with the holographic technique.

  15. Belgian chips... by spectrokid · · Score: 5, Insightful

    InPhase technology uses a camera chip designed by FillFactory, a Belgian chip maker.
    Now if you are British, you are probably thinking of this.

    --

    10 ?"Hello World" life was simple then

    1. Re:Belgian chips... by Cochonou · · Score: 4, Informative

      What is interesting here is that FillFactory designs CMOS-APS detectors instead of the more traditional CCD imagers.
      APS stands for Active Pixel Sensor: basically the main difference with CCD's is that you get the line and row selection transistors, and an amplification transistor built in every pixel. That means you don't have to transfer the charge from pixel to pixel over the whole matrix as in CCDs: you can directly address the detector matrix as you would do on RAM.
      The main drawback is that these selection and amplification units take room on the silicium, and therefore prevent the whole surface of a pixel to be sensitive to light. This is what is called the fill factor : the amount of a pixel which is effectively capturing light.
      FillFactory (now owned by Cypress Semiconductors) have promising patents related to increasing the fill factor - hence their name.

  16. Re:O... kay... by beset · · Score: 3, Insightful

    I second this.

    I've 2 x 300gb drives in raid 1 (mirroring), i had to raid them after my previous 200gb drive failed and i had no backup (you try backing up 200gb cheaply) losing months of video work. Raid 1 is hardly great for throughput, especially when working on very large files (i now copy everything over to a spare 15k scsi drive to work with)

    A WORM system that's similar in size to tape but costs a lot less is a very attractive product to me.

    --
    1) Clever Sig 2) ????? 3) Profit!
  17. As usual by michaelmalak · · Score: 3, Insightful

    Optical storage capacities have always lagged hard drive capacities and have always had, of course, much slower access times. This relegates optical to niche applications that absolutely need the removeability aspect for storage for either archival (especially of space-hungry data such as lossless imaging) or security purposes. Examples include periodic ultrasound imaging of nuclear reactor components and, of course, medical applications. This announcement just continues the trend.

    1. Re:As usual by AvitarX · · Score: 4, Insightful

      Really?

      I seem to remember early CD-ROMS being bigger then the HDs that came with the computers.

      I know I had Grollier encyclopedia on my computer with a 500MB hard drive, and I was not first to get a CD-ROM either.

      At school I think our Amiga with a CD-ROM had a smaller drive then the CDs.

      I don't know I just have a very different memmory of CDs early on, this sense of wow, thats a lot of space. Part of it might have been they were 400 times larger then the floppies they replaced for program distribution though. A jump like that would be equivelent to 3.6 TB (9GB DVD), which they are not even talking about.

      These things would have to be real cheap to be worht it, with 500 GB exernal drives offering better performance and being available now.

      --
      Wow, sent an e-mail as suggested when clicking on "use classic" banner, and got a fast response that addressed my msg
  18. Re:O... kay... by Angstroem · · Score: 4, Funny
    Imagine travelling with it: "Oh jeez, Jimmy, you dropped the Holographic Disc! Now dad lost all his files."
    Au contraire... One of the strange qualities of holograms is that if you break one, each piece contains all information -- just scaled down.

    If you e.g. have a hologram showing a gallon-sized bottle and you break it into two equally sized pieces, then you have two pictures, each showing a half-gallon-sized bottle.

    So Dad would have twice as many files, but he now needs a magnifying lens for masturbating over his pr0n collection :)

  19. Re:Greater Throughput by Vo0k · · Score: 2, Insightful

    1) New Technology. Think speed/volume ratio not quite far below 1x CD-ROM. Where will it be in 5-10 years, if the drive enters mainstream?
    2) If that's WORM, 300G of fixed drive is useless. 300G of replaceable medium is great. Think situation from early days of CD-ROM again.
    3) If you need to move bulk amounts of data, fast, 20M/s is slow. If you want to USE the data even not directly, like watching a movie, just processing it with the machine, like searching database or decrypting data on the fly, 20M/s is quite a lot and requires very decent CPU power.

    --
    Anagram("United States of America") == "Dine out, taste a Mac, fries"
  20. Transfer Speeds by Locarius · · Score: 3, Insightful

    Am I the only one who thinks that perhaps instead of pushing for greater capacity it is time to develop FASTER storage solutions? Yes, its nice to have a ton of storage, and there is (somewhat expensive) solutions already for those who need it, but if you want a FAST storage system you are pretty much stuck. Just as an afterthought, if (for some reason) I had a fast optical connection to a site I could theoretically transfer files to my PC faster than I could write to my disk.

  21. Removable storage is lagging. by GiMP · · Score: 4, Insightful

    I remember these things called CD-ROMS from the early 90's. They had a whooping 650 megabytes compared to the 256-500 megabyte harddrives at the time. Can you imagine it? Harddrives being *smaller* than the removable media? Sure, it wasn't writable by end-users, but it was at least available in read-only form.

    In the late 90's all the harddisk manufacturers scrambled to build the biggest and fastest disks. Unfortunately, our removable media has fallen behind. I'm sorry, but the maximum DVD size is what? 15.9 gb -- if we use both sides of the medium. This just isn't enough when there are portable music players sporting 80gb harddrives.

    1. Re:Removable storage is lagging. by Mant · · Score: 4, Insightful

      In some ways it is easy to make a bigger hard drive, or at least once you have made it, get people to use it. They just install and off they go.

      Removable media suffers from the problem it isn't much use unless a lot of people use it. People aren't going to switch to slightly better media, requiring buying new recorders/players, suffering from the stuff you record not being compatible with most people's players for a while and so on. Removable storage will always lag because of this.

      So while we can make removable media much better than current DVDs, they aren't better enough yet to get people to switch. Floppy disks to CDs to DVDs were all big jumps in storage, and now DVDs are big enough for most people, most of the time.

    2. Re:Removable storage is lagging. by sjames · · Score: 2, Insightful

      Harddrives being *smaller* than the removable media?

      That has lead to the crazy situation we have now where removable IDE drives are the most affordable back-up media that will actually be used. Although they have none of the archival properties desired for a backup, it's STILL cheaper to make two copies of the backup onto two IDEs than it is to mess with a DVD jukebox. While manually swapping DVDs would be cheaper still, and might improve archival characteristics, the odds are that a procedure involving swapping a dozen DVD's around just before quitting time will simply not happen on some days.

      I can understand that there are good technical reasons for this state of affairs. Storage density requires precision. It's a lot easier to get the needed precision when the read/write heads and media are perminantly attached to the same structure.

      That, and compared to the size of a bit on a high density medium, a scratch or a dust speck is HUGE. HDs have the advantage that the media and heads live in a sealed clean environment. Imagine if you wiped the platters on your shirt, called it good enough, and tossed them into a drive.

      Carriers with a sliding access door help, but are still nowhere near as clean as a sealed unit.

  22. Constellation 3D and Flourescing Media by BenJeremy · · Score: 3, Interesting

    Actually, I watched this technology for some time... 8 years ago, a Russian company claimed to have the same thing, labelled FM-ROM.

    Waited and waited... dunno if it was all just a scam, or perhaps this company is the new incarnation. C3D's stock went into OTC/Penny-stock status and changed symbols countless times.

  23. Re:O... kay... by dAzED1 · · Score: 2, Informative

    um, no. You'd still have a hologram showing a gallon-sized bottle, it would simply have half the resolution as before. The refraction of the light doesn't suddenly change simply because the plate broke - think about it for a moment. Does it make sense to you that if you break the plate, the light would get displaced to a porportionally smaller area, that the outline of the bottle would shift inward? No. It merely loses clarity.

  24. Re:O... kay... by CastrTroy · · Score: 3, Interesting

    I would most likely like a warehouse full of mag tapes. If one of these discs goes bad, you've lost 300 GB of data. If a tape goes bad, you've lost quite a bit less. Unless you're using 300 GB tapes, which do exist.

    Tapes are used because we know they are reliable. Optical data seems to have problems with being reliable. When you can't afford to lose the backup information, you will use the tried and tested technology, instead of the new whiz-bang technology.

    --

    Anthropic principle: We see the universe the way it is because if it were different we would not be here to see it.
  25. Re:300gb? keep in mind the purpose by dingDaShan · · Score: 2, Insightful

    The purpose of this media is to make money. Obviously they can make much more money by making a simplified version at first that has more space than all but the largest hard discs, and then space the release of larger versions. This model is used to make more money... which is the purpose of any commercial venture.

  26. One million bit PAGE size - new file system? by CustomDesigned · · Score: 3, Informative
    The device reads 128K byte pages - as opposed to the typical 512 byte sectors common with magnetic disks and 2048 byte sectors common with CD-ROM.

    For WORM applications, this is not that big a deal. However, for R/W applications, some serious file system and virtual memory redesign is needed.

    Not to worry - these holo drives wear out quickly with repeated rewriting just like CD-RW, so they are not providing paging space anytime soon. But it is fun to think about.

  27. Re:O... kay... by hamburger+lady · · Score: 3, Funny

    If you e.g. have a hologram showing a gallon-sized bottle and you break it into two equally sized pieces, then you have two pictures, each showing a half-gallon-sized bottle.

    yeah, and if you broke those in half again, it would change into a quart bottle, and if you did it again, you would end up with 8 pictures of a pint glass.

    it gets really wacky if you keep going, you end up with a whole collection of little pictures of tablespoons.

    --

    ---
    Is this the MPAA? Is this the RIAA? Is this the DMCA? I thought it was the USA!
  28. Not rewritable by michaelmalak · · Score: 2, Interesting
    Your CD-ROM was not rewritable or even recordable. Recall the NeXT's rewritable drive was just 256MB. But even assuming that Sony's 600MB magento-optical happened to be available at the time of your 500MB Grollier experience, you're quibbling over 20%?

    See, the problem with optical is that because it is removeable media, the format is stuck in time. First, there is the vaporware period where an optical drive is announced. Favorable comparisons are made to hard drives available during the vaporware period. Then the optical drives are actually released, and the capacity is about the same as hard drives of the day -- but, hey, it's removeable (thus the niche applications I referred to). Then the optical drives can't incrementally upgrade capacity (manufacturers wait until a full doubling of capacity before making their customers upgrade), and the optical drives lag in capacity.

  29. In other news... by Foolomon · · Score: 2, Funny

    ...Microsoft announced today that it's next major release of Windows will require 290G of disk space to be installed.

  30. Graceful Deterioration? by perspicaciously · · Score: 2, Interesting

    IIRC, holographic media has long been heralded as the future of storage, not for space reasons so much as the fact that holograms degrade gracefully. That is, if you take a holographic plate and scratch it, you don't eliminate information (the image) where the scratch is, you degrade the quality of the information across the whole image in proportion to the area of the scratch over the area of the entire hologram (which should be very small).

    This makes sense because if you take a hologram (play with a key fob if you have one, this is inherently true of holograms) and cover half the image, you can still rotate the uncovered half in a way that allows you to see the remainder of the hologram, so you haven't deleted that sector of information--however, the resolution is half what it would be otherwise. In this way, small amounts of damage are undetectable, and don't result in errors until the "resolution" of the bits drops low enough that they can't be read.

    So, my understanding was that in digital media, bits aren't stored in discrete positions, but the information for each bit is spread across the entirety of the medium, and thus the media would be much more resistant to damage. However, for such an amazing benefit, I don't see any mention of this, so maybe this works on a different principle--does anybody else know about this?

  31. Scratches? by Spy+der+Mann · · Score: 2, Insightful

    I'm curious - how sensitive are these discs to scratches that could corrupt their information? In other words, what's their reliability? (No I didn't RTFA, sorry)

  32. Re:Access times are less than 200 milliseconds... by default+luser · · Score: 2, Informative

    It's high compared to hard drives, but compared to other optical disc drives, it's in the same range. The fastest CD / DVD drives have ~100ms access times.

    And, keep in mind that access times on early CD / DVD drives were WORSE than the time advertised by this new media. As rotational speeds, caches and access algorithms improved, so did access times. Expect the same from this stuff.

    But I see one roadblock: there's no severe need for a new large-capacity optical media. CD-ROM adoption was a given, as there was nothing quite like it for software distribution: cheaper than a floppy to make in quantity, and had plenty of growth room in a day when games were forced to ship on 5-10 floppies, not to mention dozens of floppies for office suite or OS installs.

    Plus, you had game designers just itching to add space-hungry features like vocal tracks, video and higher-resolution, higher-variety artwork. Microsoft helped the whole thing gain momentum by pushing through the MMPC standard, which pretty much standardized sound and CD-ROM support.

    Now, look to today. We have games like UT2004 and HL2 still shipping mostly on six CDs, with only limited or more expensive runs available on DVD. This, despite the fact that the DVD-ROM drive is seven years old, and that DVD+/-R gave DVD-ROM a killer app starting three years ago.

    The fact is, there is not much perceived need for greater capacity on a single disc. DVD will never completely replace CD-ROM on the PC, simply because they're more expensive to make, the capacity is not always needed, and every DVD drive made from now until the end of time will support the old CD-ROM standard.

    Thus, you see a slowdown in the push for larger removable optical media, because there's already a standard that's 99.9% compatible and good enough for 95% of uses. It may take another five years for DVD to become the dominant removable media, and another 5 years for us to push the limits of it. Holographic media is going to have to bide it's time, or be prepared for initial disappointment.

    --

    Man is the animal that laughs.
    And occasionally whores for Karma.

  33. 2.7h write time by phorm · · Score: 2, Informative

    Could take a long time to write one of these suckers to capacity though:

    The HDS-200R, would ship this year with a 20-Mbyte transfer rate

    OK, so 200GB=200,000MB.
    200,000MB / 20MB/sec = 10000 sec 10000 sec / 3600sec/hour = 2.8h (2h48m approx).

    Not a bad speed considering that my first DVD-writer took about 15 minutes to write a disc... but still a long time if you're making a live backup, etc.