storage devices

storage devices

1. optical

   • examples
     • disadvantages
       • more expensive than magnetic devices
         • Requires a blu-ray player.
           • can lose data when scrached unlike magnetic and solid state devices
     • advantages
       • Can hold a lot of data compared to magnetic storage
       • It can store movies with better picture
       • It is portable (but not as portable as a solid state device).
     • CD's
       • DVDs
         • Blu-Rays

2. Magnetic

   • Examples
     • PCs,Desktop computers,laptops,game consoles
   • Advantages
     • Relatively cheap per unit of storage
     • Fast access
     • There is retrieval times compared to other storage devices
   • Disadvantages
     • Can be easily damaged
     • Will slow down and eventually
       • Slower access than solid state drives

3. Solid State

   • Examples
     • Phones
       • Tablets
       • Gaming PCs/Laptops
   • Advantages
     • Very compact in size
       • It is very portable
     • High speed of data transfer
     • Low power consumption
   • Disadvantages
     • More expensive than magnetic storage
     • More vulnerable to abrupt power loss

4. Purpose

   • What do we use storage for?
     • Storing Data (files operating system applications).Permanently.