Storage Devices

Storage Devices

1. Magnetic

   • Fixed Hard Disk
     • Fast data transfer rate / Large capacity
     • Can be easily damaged / Lack portability
   • Portable Hard Disk
     • Fast data transfer rate / Large capacity / Portability
     • Can be easily damaged
   • Floppy Disk
     • Fit for small files / Cheap
     • Low capacity / Low data transfer rate / Fragile
   • Magnetic Tape
     • Less expensive / Robust / Fast data transfer rate
     • Slow access time / Extra tape needed for updating

2. Optical

   • CD-ROM / DVD- ROM
     • Cheap / Good capacity
     • Slow data transfer rate / Slow access time
   • CD- R / DVD-R
     • Cheap / Once burned are like ROMs
     • Can only be burned once / Compatibility issues
   • CD- RW / DVD-RW
     • Can be re-used / Can use different file formats
     • Can be expensive / Possibility to overwrite data
   • DVD -RAM
     • Long life / Fast access time / Large capacity / Read & Write at the same time
     • Compatibility issues / Expensive
   • Blu-Ray
     • Large capacity / Fast access and transfer rate
     • Expensive / Encryption problems

3. Solid State

   • Pen Drives
     • Portability / Robust
     • No writing protection / Easy to lose
   • Flash Memory Cards (SD)
     • Portability / Robust
     • Expensive / Short life / Low capacity