secondary storage

secondary storage

1. solid state

   • USB memory stick
   • non-volatile
   • SSD storage devices use non-moving memory chips, mostly non-volatile instead of the rotating magnetic discs found in hard drives.
   • 120GB to 30.72TB
   • they are expensive
   • SSDs operate at much faster speeds of 50 to 250 MB/s
   • portable
   • durable because it has no moving parts

2. hard disk drives

   • floppy disk drive
   • the plates that are coated with a magnetic material spin very fast
   • over 100 GB of data.
   • non-volatile

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