storage divces

storage divces

1. optical

   • exampels
     • optical storage use's to rad and write CDs DVDs blu-ray
   • advantages
     • portable can be used in variety of devices cheap
   • disadvantages
     • can be easily scratched low capacity
   • information on sony blu-ray
     • capacity 50 gb
     • speed 72 mb
     • portability 4 star
     • reliability 2 star
     • price 0.14
   • sony cd-r
     • capacity 700 mb
     • speed 1200 kb
     • portability 4 star
     • reliability 2 star
     • price 0.54

2. magnetic

   • example
     • the hard disk inside the laptop or computer is probable a magnetic
   • advantage
     • high capacity cost-effective
   • disadvantage
     • less durable then solid state
   • information on tb internal sata
     • capacity 2 tb
       • speed 120 mb
     • portability 1 star
     • reliability 4 star
     • price 0.03

3. solid state

   • exapels
     • xbox laptops tablets pc mac computers
       • it is a moving part thing
       • it moves in phones tablet and usb stick
   • disadvantages
     • not as cost effective
   • advantages
     • high read write speed energy efficient
   • samsung 840 solid state drive
     • capacity
       • 750 gb
     • speed
       • 520 mb
     • portability
       • 5 star
     • relibility
       • 4 star
     • price 0.54
   • kingstone drive
     • capacity
       • 256 gb
     • speed
       • 225 mb
     • portability
       • 5 star
     • reliability
       • 4 star
     • price
       • 0.93
   • sandisk card
     • capacity
       • 64 gb
     • speed
       • 30 mb
     • portability
       • 5 star
     • relibility
       • 4 star
     • price
       • 0.54

4. purpose

   • what do we use storage for?
     • storage data files operating system

5. the solid state drive was made in 1950

   • the first ssd was called carge capactor

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