Secondary Storage Devices

• Secondary storage device

  Any non-volatile storage device that is internal or external to the computer
• Secondary storage devices

  • Hard drive
  • Floppy disk
  • CD
  • DVD
  • Pen Drives/flash drives
  • Blue Ray Disk

  
• Purpose of secondary storage devices

  • Data backups
  • Disaster recovery
  • Long-term data archiving
  • Remote storage of critical, classified, or secure information
  • Additional or portable storage space for downloaded files
• Hard disk drive (HDD)


  Non-volatile data storage device, usually installed internally in a computer, can store any data including pictures, music, videos, text documents, and files for the operating system and software programs

  
• Solid State Drive (SSD)

  Mass storage device like HDDs, more durable, needs less power, 10x faster read and write speed, costly, ranges from 150GB to a few and more TB, no moving parts so don't need to "spin up"
• External hard drive


  Stand-alone devices that backup data on computers and expand the available space, come in many shapes and sizes

  
• SSDs have started to replace HDDs


  Due to performance advantages of SSDs over HDDs
• SSDs (solid-state drives) have started to replace HDDs (hard disk drives) because of the distinct performance advantages they have over HDD