Storage

Storage

1. RAM

   • RAM (pronounced ramm) is an acronym for random access memory, a type of computer memory that can be accessed randomly; that is, any byte of memory can be accessed without touching the preceding bytes. RAM is the most common type of memory found in computers and other devices, such as printers.
   • Advantages of a RAM filesystem: Silent: since there are no moving parts RAM operation is completely silent. Power-efficient: for the same reasons, RAM uses much less power than disk drives. ... Fast: RAM is the fastest storage medium outside of the CPU.

2. ROM

   • Once data has been written onto a ROM chip, it cannot be removed and can only be read. Unlike main memory (RAM), ROM retains its contents even when the computer is turned off. ROM is referred to as being nonvolatile, whereas RAM is volatile. ... A variation of a ROM is a PROM (programmable read-only memory).
   • Well, there are many advantages and disadvantages with custom ROMS. I would say the principal advantages are that: ... The Custom ROMs takes up less space than most Stock Roms and also allow you to integrate SD storage fully. They often improve baseband and signal quality.

3. Solid State Drive

   • An all-electronic storage device that is an alternative to a hard disk. Employed in myriad products, including mobile devices, iPods, cameras, laptops and desktop computers, solid state drives (SSDs) are faster than hard disks because there is zero latency (no read/write head to move).
   • More expensive than hard disk drives: An SSD is more expensive than an HDD in terms of dollar per GB. This is one of the primary disadvantages of a solid-state drive. Compared with a hard disk drive, a solid-state drive with a similar storage capacity can be twice as expensive.

4. Hard disk drive

   • A hard disk drive (HDD), hard disk, hard drive or fixed disk is a data storage device that uses magnetic storage to store and retrieve digital information using one or more rigid rapidly rotating disks (platters) coated with magnetic material.
   • HDD: Advantages and disadvantages of hard disk drive. A hard disk drive or a hard drive is a data storage device that uses magnetic recording to store and retrieve digital information. ... A paired magnetic head reads and writes data on this coating while the platter spins.

5. Optical

   • An optical computer (also called a photonic computer) is a device that uses the photons in visible light or infrared ( IR ) beams,rather than electric current, to perform digital computations. An electric current flows at only about 10 percent of the speed of light
   • The fibers can be broken or have transmission losses when wrapped around curves of only a few centimeters radius. Fiber optic cable has both advantages and disadvantages. However, in the long run, optical fiber will replace copper.

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