Arefracted laser beam striking a photoreceptor from many different angles allows storage to retain many bits of data in the same location.

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.

the answer to your question would be something called hertz. the unit of measurement called a hertz, which is one cycle per second, is used to measure clock speed. within one cycle, your computer processes, refreshes, or updates itself to the changes that it is going through. in the case of computer clock speed, one hertz equals one tick per second. the clock speed of computers is usually measured in megahertz (mhz) or gigahertz (ghz)