5 THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE FINANCIAL STATEMENTS OF QUANTUM CORPORATION. 1,000 12-MOS 12-MOS 12-MOS MAR-31-2000 MAR-31-1999 MAR-31-1998 APR-01-1999 APR-01-1998 APR-01-1997 MAR-31-2000 MAR-31-1999 MAR-31-1998 918,262 772,368 642,150 32,080 24,426 71,573 632,336 658,687 750,856 23,111 12,130 12,928 223,825 271,986 315,035 2,013,554 1,927,873 2,025,337 536,354 563,545 505,640 299,669 291,617 220,481 2,533,952 2,483,596 2,438,411 854,247 682,005 700,236 325,338 344,461 327,485 0 0 0 0 0 0 737,020 886,434 776,291 562,011 503,356 595,731 2,533,952 2,483,596 2,438,411 4,727,204 4,902,056 5,805,235 4,727,204 4,902,056 5,805,235 3,848,244 4,030,718 4,929,714 3,848,244 4,030,718 4,929,714 802,393 727,099 580,136 0 0 0 28,385 27,481 32,753 89,170 (185) 230,815 48,326 29,350 60,014 40,844 (29,535) 170,801 0 0 0 0 0 0 0 0 0 40,844 (29,535) 170,801 0 (0.18) 1.25 0 (0.18) 1.07 From April 1, 1999 through August 3, 1999: Quantum EPS -- Primary (0.10) From August 4, 1999 through March 31, 2000: DSS Group EPS -- Primary 0.53 HDD Group EPS -- Primary (0.33) From April 1, 1999 through August 3, 1999: Quantum EPS -- Diluted (0.10) From August 4, 1999 through March 31, 2000: DSS Group EPS -- Diluted 0.51 HDD Group EPS -- Diluted (0.33)