If you examine the 5 image, the hologram is a small spot on the disk.
Therefore, scratches (at least bad ones) will cause read failures just as they do on any other DVD or CD.
Gallery: GE develops 500GB holographic drive
by Robin Harris | July 26, 2011 2:14pm PDT | Image 1 of 6
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After years of trying, GE says that it has developed micro-holographic material that records data at the same speed as Blu-ray disks - using Blu-ray-type technology. This has enabled the company to build a 500GB holographic storage disk that can hold about 20 full-length Blu-ray movies.
For more on GE's new halographic disks, read Robin Harris's blog.
Credit: GE
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@jessepollard Look at slide 4. You would have to seriously scuff up a disk before it would become an issue. The data in hologram based storage is highly redundant, so you don't lose data from one scratch the way you do with a CD/DVD/Blu Ray.
I don't think anyone is hoping for an indestructible technology. We're used to dealing with scratches. This is about 10 times the storage for a comparable price.
Who wants this BS technology. I hate disk, to unreliable and to many failures when recording ruining a disk. I'll stick with my static devices like SD cards. I haven't used CDs/DVD for anything but movies for years and that's only because that's what the manufacturers put it on. Quit wasing money on useless technology and increase static device storage, reliable and dependable.
@alphaxi3
I'll betcha this new disk is still reading and writing many times over after you've fried your SD cards from constant rewrites!
I'll betcha this new disk is still reading and writing many times over after you've fried your SD cards from constant rewrites!
@panelshop
I'd take that bet. Flash tech is not standing still. My bet is that both undamaged memory and holographic density/reliability will continue to improve following Moore's law.
I'd take that bet. Flash tech is not standing still. My bet is that both undamaged memory and holographic density/reliability will continue to improve following Moore's law.
@panelshop Yeh, right. Do you know how many CD's/DVD's I've had that after about a year I popped them into the drive and could not be read anymore. I've only had one USB plug-in go bad on me in 7yrs and countless CD's/DVD's. That why I always keep backups of those pieces of crap on a hard drive, because its always only a matter of time.
PS: never had a hard crash on me either.
PS: never had a hard crash on me either.
@alphaxi3
I'm talking about the "New Disk", the holographic drive, not CD/DVD's, time will tell.
My 5 techs I have working on PLCs and robotics averaged 1 to 2 flash drive failures a year (writing multiple times a day) after 4 months our SOP requires a new drive and use the old as a back-up until failure or 4 months whichever comes first.
I'm talking about the "New Disk", the holographic drive, not CD/DVD's, time will tell.
My 5 techs I have working on PLCs and robotics averaged 1 to 2 flash drive failures a year (writing multiple times a day) after 4 months our SOP requires a new drive and use the old as a back-up until failure or 4 months whichever comes first.
@panelshop This is a write-once technology at the moment. Proper holography is based on the same emulsions as photography - basically crystalline, and those things they call holograms on bank cards and the like are micro prisms laser-etched into plastic... Neither are 'rewritable', although developing crystal that phase-changes photoactively isnt out of the question.
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