Storage types

Storage types

1. Optical

   • Uses light to store data.

2. Magnetic

   • A magnetic disk is a storage device that uses a magnetization process to write, rewrite and access data.

3. Solid state

   • 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).

4. Durability

   • In database systems, durability is the ACID property which guarantees that transactions that have committed will survive permanently. For example, if a flight booking reports that a seat has successfully been booked, then the seat will remain booked even if the system crashes.

5. Reliability

   • Reliability is an attribute of any computer-related component (software, or hardware, or a network, for example) that consistently performs according to its specifications. It has long been considered one of three related attributes that must be considered when making, buying, or using a computer product or component.

6. Capacity

   • Storage capacity - Computer Definition. The amount of data a storage device such as a disk or tape can hold. Storage capacity is measured in kilobytes (KB), megabytes (MB), gigabytes (GB) and terabytes (TB). See space/time, magnetic disk, magnetic tape and optical disc.