Exhibit 23.1
 
               CONSENT OF ERNST & YOUNG LLP, INDEPENDENT AUDITORS
 
   We consent to the reference to our firm under the caption "Experts" and to
the use of our reports dated April 21, 1998, included in the Proxy Statement of
Quantum Corporation that are made a part of the Registration Statement (Form S-
4) and Prospectus of Quantum Corporation for the registration shares of its
DSSG and HDDG common stock.
 
                                          /s/ Ernst & Young LLP
 
Palo Alto, California
March 24, 1999