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

DMU
       Data Management Unit (ZFS)


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

DMU
       Data Manipulation Unit


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

DMU
       Digital Mock-Up


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

DMU

   Data Management Unit

   Data Manipulation Unit

   Data Multiplexer Unit

   dataless management utility