Secondary Storage

Secondary Storage

1. Optical (CD\DVD\Blu-ray)

   • Writes and reads data
     • Uses laser to do it
   • Non volatile
   • Cheap

2. Solid State Drive (SSD)

   • Have no moving parts
   • Less storage
   • Non volatile
   • Used in Phones,Pc's
   • Reads and writes data faster
   • Lasts longer than HDD
   • Doesn't take up much energy

3. Magnetic (HDD)

   • Have moving parts
   • More storage
   • Non volatile
   • Cost effective
   • Used in Pc's,laptops and servers
   • Reads and writes data slower than SSD
   • Lasts less than SDD
   • Takes up more energy

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