The Free On-line Dictionary of Computing (30 December 2018):

Shugart Associates

    The disk drive company, founded by Alan
   F. Shugart, which developed SCSI.  Alan left Shugart
   Associates in 1974 [did he quit or was he fired?].  Shugart
   Associates was bought, and eventually shut down by Xerox.

   (2000-02-09)