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  • Disk images: use cases involving digital material stored on physical media, including 5.25" floppies, 3.5" floppies, zip disks, and optical media, USB drives, and hard drives.
  • Copy only: use cases where disk imaging is not appropriate or where content has arrived via email, network transfer, or download.
  • DVD: use cases where moving image content is stored as DVD-Video on optical media.
  • CDDA: use cases where sound recordings are stored as Compact Disk Digital Audio on optical media.