Secondary Storage

Secondary Storage

1. Optical Storage

   • Examples
     • DVD's
     • CD's
     • Blu-Ray Discs
   • Advantages
     • Very portable
     • Cost Effective
   • Disadvantages
     • Limited Storage
     • Not very durable

2. Magnetic Storage

   • Examples
     • Hard drive
     • Floppy disk
     • Hard disk drive
   • Advantages
     • Cost Effective
     • Has a lot of storage
   • Disadvantages
     • Not durable at all
     • Writes data slower than solid state

3. Solid state storage

   • Examples
     • USB drive
     • SD cards
     • Smart cards
   • Disadvantages
     • Not very cost effective
     • Small capacity
     • Small read/write memory
   • Advantages
     • Very durable
     • Energy efficient

4. Purpose

   • what do we use storage for?
     • Storing data (files, operating systems, applications) permanently