Storage Devices

Storage Devices

1. Magnetic

   • Magnetic storage media or devices are made up from lots of tiny magnetised dots. These dots are created, read and erased using magnetic fields created by very tiny electromagnets.
   • magnetic tape
   • floppy disk
   • hard disk drives
   • audio/video cassettes
   • advantages
     • a lot of storage
     • cost effective due to having a larger capacity than solid state
   • disadvantages
     • not as durable due to moving parts
     • overheats quickly
     • needs constant power
     • reads/writes data slower in comparison to solid state

2. Optical

   • DVDs
   • BlueRays
   • CDs
   • advantages
     • good durability with proper care
     • good portability
   • disadvantages
     • not durable
     • takes some time to write
     • limited capacity
   • optical storage is any storage storage type in which data is written and read with a laser.
   • cost effective and very portable

3. Solid State

   • Computers
   • Mobile Phones
   • Microprocessor chip
   • LED Lamp
   • Hard Disk Drives
   • Solid States are made up of components that do not move.
   • Advantages
     • lasts longer than most magnetic disks
     • faster data access/transfer times
     • runs silently
     • more durable and can read/write data much faster than magnetic storage
     • it is also more energy efficient
   • Disadvantages
     • more expensive than magnetic hard disks
     • smaller storage capacity than magnetic hard disks
     • has limited read/write lifespan