Hard disk drive

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A hard disk drive (HDD), hard disk, hard drive, or fixed disk[b] is an electro-mechanical data storage device that uses magnetic storage to store and retrieve digital information using one or more rigid rapidly rotating disks (platters) coated with magnetic material.


  1. Learn about SDD storage technology and compare it with HDD technology
  2. Use lsblk and blkid commands in Linux to identify your HDD devices
  3. Use iotop, iostat and sar -d in Linux to assess you disk usage

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