5

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

1,000 6-MOS MAR-31-1999 APR-01-1998 SEP-27-1998 549,446 29,240 673,999 10,985 295,799 1,763,553 543,157 256,909 2,128,804 607,578 326,985 0 0 802,590 351,969 2,128,804 2,267,734 2,267,734 1,909,473 1,909,473 289,556 0 13,227 28,964 8,689 20,275 0 0 0 20,275 0.13 0.13