V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

DACNOS
       Distributed Academic Computing Network Operating System (OS,
HECTOR)


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

DACNOS

   A prototype network operating system for multi-vendor
   environments, from IBM European Networking Centre Heidelberg
   and University of Karlsruhe.

   (1995-01-16)