Answer:
Holographic data storage.
Explanation:
Traditional storage devices like the hard disk and CD ROM make use of magnetic and optical processes to store a bit at a time in various locations on the disk. The holographic storage uses light wave at many angles to store multiple bits of data in parallel in the same location.
The holographic storage is very fast in reading and writing millions of data bits at a time because of its parallel nature, making it the fastest data storage device.
