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Holographic Data Storage
  • Last Updated : 18 Jun, 2019

What is Holographic Storage?
Holographic data storage is a high information storage volume technology that empowers information storage by making holographic pictures of every data instance on a bolstered medium. It depends on the comparable idea of optical storage gadgets however it empowers the utilization of a single storage volume to store a lot of information. It is also known as Three-Dimensional (3-D) Storage. Holographic media is split into write-once (irreversible change), and rewritable media (change is reversible). Rewritable holographic storage can be accomplished through the photorefractive impact in crystals.
This memory framework comprises of the accompanying: a blue-green argon laser, beam splitters, reflectors, an LCD board, lenses, lithium-niobite crystal, and a charge-coupled device camera.

How would it work?
The blue-green argon laser would be discharged, and with the assistance of the beam splitter, the laser shaft would be part into two beams known as the signal beam, which moves straight ahead, and the reference beam, which is coordinated through the side of the beam splitter.
The signal beam would rebound off of a mirror, and travel through the LCD display to the lithium-niobite crystal
The reference beam would approach the crystal from an alternate way.
At the point when the two beams meet, the information (conveyed by the signal beam) would be put away in a hologram

Applications of Holographic Data Storage: –

  1. Data Mining : Data mining is the way toward finding patterns in a lot of information. Data mining is utilized extraordinarily in enormous databases which hold potential patterns which can’t be recognized by human eyes because of the huge measure of information. Some present PC frameworks execute data mining, however, the mass measure of capacity required is pushing the limits of the current data storage system. The numerous advances in access times and data storage capacity that holographic memory gives could surpass conventional storage and accelerate data mining considerably. This would result in increasingly found patterns in a shorter measure of time.
  2. Petaflop Computing : A Petaflop is a thousand trillion gliding operations per second. The quick access in the exceptionally big amount of information given by holographic memory frameworks could be used in petaflop architecture. Plainly advances are required in more than memory systems, however, the hypothetical schematics do exist for such a machine. Optical capacity, for example, holographic memory gives a feasible answer for the outrageous measure of information which is required for petaflop computing.
  3. Holographic memory can be utilized as expanded DRAM with 10ns access time, Hard disk drives, CD ROMs of huge storage volume and rock mounted of petabytes storage volume.

Advantages of Holographic Storage:

  • Holographic memory offers a storage volume of around 1 TB. Speed of recovery of information in tens of microseconds contrasted with a data access time of practically 10ms offered by the quickest hard disk today. When they are accessible, they can move a whole movie picture in 30 seconds.
  • Data pursuit is additionally quicker in holographic memory. In holographic capacity whole pages can be recovered where contents of at least two pages can be contrasted optically without having to recover the data contained in them. Likewise, HDSS has no moving parts. So, the constraints of mechanical movement, for example, erosion can be evacuated.
  • Protection from damage – If a few pieces of the medium are damaged, all data can still be acquired from other parts. All data can be recovered from any piece of the medium.


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