5

THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE FINANCIAL STATEMENTS OF QUANTUM CORPORATION FOR THE QUARTER ENDED DECEMBER 27, 1998

1,000 9-MOS MAR-31-1999 APR-1-1998 DEC-27-1998 683,011 24,425 676,061 11,823 259,042 1,855,446 545,707 278,922 2,393,568 663,711 351,725 0 0 855,946 448,241 2,393,568 3,593,315 3,593,315 2,995,964 2,995,964 540,000 0 20,136 (84,873) 1,403 (86,276) 0 0 0 (86,276) (0.54) (0.54)