secondary Storage.

secondary Storage.

1. OPTICAL STORAGE

   • DVD
   • CD
   • portable.
   • blu-ray
   • Advantages: Cost effective and very portable.
   • Disadvantages: Not very durable and has a limited capacity.

2. MAGNETIC STORAGE.

   • circular plates called platters.
   • platters rotate at a very high speed.
   • Data is stored by magnetising the surface of the circular platters.
   • ADVANTAGES: Cost effective due to having a larger capacity than solid state.
   • DISADVANTAGES: Not as durible due to moving parts and reads/writes data slower in comparison to solid state.