Secondary Storage

Secondary Storage

1. Magnetic Storage

   • Using different patterns of magnetisation on a magnetisable material to store data in a non-volatile memory.
     • Examples: Hard drive disk
   • Advantages:Cost effective, good capacity and portability
   • Disadvantages: Not good durability

2. Optical Storage

   • Data is stored by making markings on a disk that cam be read back with a beam of light
     • Examples: CD's, DVD's
   • Advantages: Cost effective
   • Disadvantages:Not got durability

3. Solid State

   • Uses microchips to store data and it hasn't got ant moving parts.
     • Examples: Hard disk drives
   • Advantages:smaller, stronger, faster, portable, less energy use and no moving parts which makes it durable
   • Disadvantages: ineffective cost

4. Cloud storage

   • Rather than storing data on a computer hard drive disk it stores it on a remote database and the internet connects the database to the computer
     • Examples:Google drive and dropbox
   • Disadvantages: You can not use it without internet
   • Advantages: Remotely maintained, managed,backed up and you can access it from anywhere as long as you have internet connection