5

THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE FINANCIAL STATEMENTS OF QUANTUM CORPORATION.

1,000 9-MOS 6-MOS 3-MOS MAR-31-1999 MAR-31-1999 MAR-31-1999 APR-01-1998 APR-01-1998 APR-01-1998 DEC-27-1998 SEP-27-1998 JUN-28-1998 683,011 549,446 496,371 24,425 29,240 58,528 676,061 673,999 674,825 11,823 10,985 11,854 259,042 295,799 317,826 1,855,466 1,763,553 1,765,813 505,707 543,157 524,412 278,922 256,909 236,967 2,393,568 2,128,804 2,153,016 663,711 607,578 603,983 351,725 326,985 327,238 0 0 0 0 0 0 855,946 802,590 785,827 448,241 616,189 597,736 2,393,568 2,128,804 2,153,016 3,593,315 2,267,734 1,103,023 3,593,315 2,267,734 1,103,023 2,995,964 1,909,473 936,650 2,995,964 1,909,473 936,650 662,088 316,070 155,570 0 0 0 20,136 13,227 6,502 (84,873) 28,964 4,301 1,403 8,689 1,291 (86,276) 20,275 3,010 0 0 0 0 0 0 0 0 0 (86,276) 20,275 3,010 (0.54) 0.13 0.02 (0.54) 0.13 0.02