secondary storage

secondary storage

1. It is non-volatile storage. It is needed in a computer system to store your program, operating system and files.

   • Non-volatile means that the data is not deleted when the computer system has no power connected to it.

2. optical storage

   • Advantages
     • Cost Effective.
     • More Portable Than Magnetic Storage Meaning It Can Be Moved Around And From Device To Device.
   • DVD
   • Blu-Ray
   • Disadvantages
     • Not Very Durable
     • Has Less Storage Than Magnetic Meaning It Can't Store As Much Data.

3. Solid state (flash) storage

   • Advantages
     • More Durable Than Magnetic Meaning It Is Less Likely To Break.
     • Faster Read/Write Speed Than Magnetic Storage Meaning It Can Access And Save Data And Instructions Faster Than Magnetic Storage Can.
   • USB Stick
   • SD Card
   • Disadvantages
     • Less Cost Effective Than Magnetic Because It Has A Smaller Capacity
     • It Has Limited Read/Write Life

4. magnetic

   • Advantages
     • Cost Effective.
     • Larger Capacity Than Solid State Meaning It Can Store More Files And Applications.
   • Floppy Disk
   • Magnetic Tape
   • Disadvantages
     • Less Durable Than Solid State Due To Moving Parts
     • Slower Read/Write Speed than Solid State.