Secondary Storage

Secondary Storage

1. Optical Storage

   • Advantages
     • Cost effective and very portable compared to solid state
   • Disadvantages
     • Not very durable and has a limited capacity compared to magnetic
   • Blu-Rays
   • CD's
   • Data is written and read with a laser

2. Magnetic Storage

   • Advantages
     • It is cost effective due to having a larger capacity than solid state
   • Disadvantages
     • Not as durable due to moving parts and read/writes data slower in comparison to solid state
   • Uses different patterns of magetisation on a magnetised disk
   • Floppy disks
   • Magnetic tape

3. Solid State Storage

   • Disadvantages
     • Smaller storage capacity than magnetic
   • Advantages
     • Lasts longer than magnetic disks, no moving parts
   • Does not rely on moving or spinning parts
   • Flash memory
   • Hard disk drive