1.3 Storage

1.3 Storage

1. What are the 6 characteristics of storage?

   • Capacity - how much data it can store
   • Speed - how fast it can access data
   • Portability - how easily it can move from one place to another
   • Durability - how well it lasts (eg. if it is dropped)
   • Reliability - how consistently it preforms
   • Cost - how much it costs per KB , MB or GB

2. What is secondary storage?

   • Long term storage of data, files, software.
   • Why do we need to store these?
     • To access later.
     • To use software.
     • To interact with the computer.
   • What would happen without it?
     • Software would need to be installed each time you use it.
     • You couldn't save any files, data, images, videos, etc.

3. What are the types of storage?

   • Optical
     • What is optical storage?
       • Read-only data
       • CD, DVD, Blu-Ray
   • Magnetic
     • What is magnetic storage?
       • HDD, Tape
       • Fast access
   • Solid State
     • What is solid state storage?
       • No moving parts.
       • SDD, Memory Card, USB