Secondary Storage

Secondary Storage

1. Purpose

   • What do we use storage for?
     • To store data

2. Magnetic

   • Example
     • The hard disk inside your PC / laptop, is probably magnetic
   • Advantages
     • High Capacity
       • This can hold a lot of data
     • Cost-Effective
       • Good value for money
   • Disadvantages
     • Less durable than solid state
       • Won't last as long

3. Solid State

   • Example
     • Found in phones, tablets and USB sticks
   • Advantages
     • High read write speed
     • Durable
       • No moving parts
       • Reliable, will last for a long time
   • Disadvantages
     • Not as cost-effective
       • Not very good price value
   • Most reliable

4. Optical

   • Example
     • CD's, DVD's and Blu-Ray
   • Advantages
     • Portable
       • Easy to carry around
     • Cheap
   • Disadvantages
     • Low capacity
       • Can't hold much data
     • Can be easily scratched
       • Not reliable
       • Not durable
         • Won't last long
   • Most portable but least reliable