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1.                 From The Free On-line Dictionary of Computing (19 January 2023):
                   
   
   
                   
                     
   drum
      Ancient slow, cylindrical magnetic media that were once
      state-of-the-art storage devices.  Under BSD Unix the disk
      partition used for swapping is still called "/dev/drum"; this
      has led to considerable humour and not a few straight-faced
      but utterly bogus "explanations" getting foisted on newbies.
      See also "The Story of Mel".
      (1994-12-22)