5

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

1,000 9-MOS 6-MOS 3-MOS MAR-31-2000 MAR-31-2000 MAR-31-2000 APR-01-1999 APR-01-1999 APR-01-1999 DEC-26-1999 SEP-26-1999 JUN-27-1999 734,175 689,010 649,425 16,601 34,634 33,426 659,698 602,679 651,104 23,144 10,421 12,126 195,218 273,647 261,919 263,359 257,652 1,805,384 516,646 539,172 581,716 283,286 267,542 311,797 2,413,851 2,457,799 2,340,681 715,864 718,332 614,729 325,627 335,912 337,690 0 0 0 0 0 0 948,693 936,867 895,038 341,407 388,343 426,478 2,413,851 2,457,799 2,340,681 3,461,914 2,208,359 1,083,235 3,461,914 2,208,359 1,083,235 2,878,235 1,893,103 903,316 2,878,235 1,893,103 903,316 539,047 371,061 160,350 0 0 0 21,499 14,426 7,208 23,133 (70,231) 12,360 21,609 (15,859) 4,079 1,524 (54,372) 8,281 0 0 0 0 0 0 0 0 0 1,524 (54,372) 8,281 0 0 0.05 0 0 0.05 DSS Group EPS - Primary 0.75 HDD Group EPS - Primary (1.47) DSS Group EPS - Diluted 0.72 HDD Group EPS - Diluted (1.47) From June 28, 1999 through August 3, 1999: Quantum EPS - Primary (0.15) From August 4, 1999 through September 26, 2000: DSS Group EPS - Primary 0.08 HDD Group EPS - Primary (0.60) From June 28, 1999 through August 3, 1999: Quantum EPS - Diluted (0.15) From August 4, 1999 through September 26, 2000 DSS Group EPS - Diluted 0.07 HDD Group EPS - Diluted (0.60)