data storage system

8/13/2019 Data Storage System

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Holographic Memory

Darrell Draper

Phillip Palmer


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Contents


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Introduction

Data storage has been a fundamental part of computing fromthe beginning. The technology for data storage has beenevolving along side other areas of computing technology. Asthese other areas of technology have developed the need for

bigger and faster storage has been evident. To meet the needfor better storage new technologies are constantly beingdeveloped as the old technology reaches it's physical limits andbecomes outdated. Currently there are several new

technologies being researched as possible replacements forcurrent storage devices.


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History of Storage

MagneticTape

Used for data, video, and audioCheap, Ideal for backup

Floppy

Same technology as tapeCheap, small storage size, portableHard Drives

Faster than tape storageStill evolving


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History of StorageOptical

Compact DiscIntroduced in 1982Still the de facto standard for physical audio

DVDInitially intended for Audio/Video use

HD-DVD/Blu-RayEvolution of DVD formatFormat war won by Blu-RayStill evolving

Holographic StoragePotential Replacement Technology


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Holographic Storage - HVD's

Potential to replacement

technology in currentdomains of magnetic andoptical storage technology.Resembles Optical Discs

similar to CD or DVDMuch high data density thencurrent optical disctechnologyCan read and write data in

parallel allowing for muchhigher data transfer speeds

Holographic Versatile Disc


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Holographic Storage - HVD's

Uses a reference beam and a data beam to create aninterference pattern.

Write Sequence:

the intersection of the two beams causes a change,which is then storedRead Sequence:

actions of the reference beam and storedinterference pattern is recreates the data beam


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Holographic Storage - HDV's

Demonstration


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Reasons for Developing HolographicStorage

Replacement as a backup mediaHigher data density than tape and current Hard DrivesData is stable for an estimated 50 years withoutdegrading

Faster read and write speedsReplacement for DVD

Higher data density than Blu-RayFaster read and write speeds

Higher ceiling for max data storage capabilityIncreasing resolutions for TVs will require more storagefor movies and games


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Benefits of Holographic Storage

Theoretical data storage of >1TB/cubic centimeter

Current technology can store approximately 4TB on aDVD sized disc

Data longevityData security

WORM (Write-once read-many) prevents data frombeing overwrittenFaster Read/Write speeds

Data can be read and written in parallel instead oflinearly

Higher speeds are necessary as storage amountsincrease


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Drawbacks of Holographic DataStorage

Not a guaranteed market leaderIf another technology becomes the industry standardthen read/write equipment will be hard to find

Expensive development

Existing technology is becoming better and cheaperIt is difficult to market a product that is more expensiveper GB of storage.


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Where Holographic is Headed


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Market Players

General Electric

In the process of developing a new holographicoptical storage disc, which would support up to500GB of data.GE is also looking to produce a holographic

medium able to store more than 1 Terabyte of data.


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Market Players continued...

Introduced the world's first commercial holographic driveand media.

Tapestry 300r300GB CapacityWORM recording format

Out of Business


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Market Players continued...

Developed by OptwareLack of moving parts whenplayed creates advantageover discs.Claims to have write

speeds that were 3 timesfaster than Blu-rayProjected launch date wasthe first half of 2007, but

still is not available.

Holographic Versatile Card


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Where Holographic Storage is headed

Developed by inPhase, Aprilis, Optware, GEAprilis website hasn't been update in over 2 yearsThe advancements in existing technologies forcedcompanies into niche markets that required large data

storage and fast read/write timesNintendo has investments in Holographic storage tech

At current time the future of holographic storage is bleakAs existing techologies hit their peak the market mayopen back up for holographic storage


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Potential Competitors

Similar technologies that may end up in a "format war"UV or X ray discs

Utilizing a laser with a smaller wavelength allows forgreater storage

3D optical discsStores data in three dimensions for greater datadensity


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Conclusion

In conclusion, Holographic Storage has the advantage overother storage mediums as it relates to:

Storage CapacityTransfer Rate

BackupIts main disadvantage is its cost of ownership.

Keep in mind, when Blu-ray was Introduced in 2006, a 25-gigabyte disc cost nearly $1 a gigabyte. Its about half thecost now. Overtime, the overall cost of holographic datastorage should decrease to an acceptable amount.


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Works CitedHolographic Versatile Card

http://en.wikipedia.org/wiki/Holographic_Versatile_Card

Holographic Data Storagehttp://en.wikipedia.org/wiki/Holographic_data_storageHolographic Versatile Disk

http://en.wikipedia.org/wiki/Holographic_Versatile_DiscHolographic Data Storagehttp://www.pctechguide.com/36Storage_Holographic_data_storage.htm


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Thank You

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