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Cache control method and apparatus
Grant 7,082,496 - Yamamoto , et al. July 25, 2 | 2006-07-25 |
Disk array device with selectable method for generating redundant data
Grant 6,961,816 - Katsuragi , et al. November 1, 2 | 2005-11-01 |
Cache control method and apparatus
App 20040030828 - Yamamoto, Akira ; et al. | 2004-02-12 |
Disk array device with selectable method for generating redundant data
App 20040010661 - Katsuragi, Eiju ; et al. | 2004-01-15 |
Disk array device with selectable method for generating redundant data
Grant 6,604,172 - Katsuragi , et al. August 5, 2 | 2003-08-05 |
Disk array device with selectable method for generating redundant data
App 20020184443 - Katsuragi, Eiju ; et al. | 2002-12-05 |
Disk array device with selectable method for generating redundant data
Grant 6,463,505 - Katsuragi , et al. October 8, 2 | 2002-10-08 |
Method of data migration
Grant 6,374,327 - Sakaki , et al. April 16, 2 | 2002-04-16 |
Disk array device with selectable method for generating redundant data
App 20010032294 - Katsuragi, Eiju ; et al. | 2001-10-18 |
Parity storage unit, in a disk array system, for generating updated parity data from received data records
App 20010013103 - Yamamoto, Akira ; et al. | 2001-08-09 |
Method of data migration
App 20010011324 - Sakaki, Hidetoshi ; et al. | 2001-08-02 |
Disk array device with selectable method for generating redundant data
Grant 6,269,424 - Katsuragi , et al. July 31, 2 | 2001-07-31 |
Method of data migration
Grant 6,230,239 - Sakaki , et al. May 8, 2 | 2001-05-08 |
Storage unit with parity generation function and storage systems using storage unit with parity generation analyzation
Grant 5,734,812 - Yamamoto , et al. March 31, 1 | 1998-03-31 |
On-line dumping system and disk sub system
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Method of changing the track and recording data
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Memory controller with a cache memory and control method of cache memory including steps of determining memory access threshold values
Grant 5,253,351 - Yamamoto , et al. October 12, 1 | 1993-10-12 |
Backup control method and system in data processing system using identifiers for controlling block data transfer
Grant 5,226,157 - Nakano , et al. July 6, 1 | 1993-07-06 |
Input/output system implementing several access paths for rerouting data in the event one path fails
Grant 5,119,488 - Takamatsu , et al. June 2, 1 | 1992-06-02 |
Parallel transfer type director means
Grant 4,870,565 - Yamamoto , et al. September 26, 1 | 1989-09-26 |
Control system for interruption long data transfers between a disk unit or disk coche and main memory to execute input/output instructions
Grant 4,819,203 - Shiroyanagi , et al. April 4, 1 | 1989-04-04 |
Method for controlling to keep off defects on magnetic disks
Grant 4,805,048 - Takeuchi , et al. February 14, 1 | 1989-02-14 |
Recording/reproducing method and apparatus of magnetic disk unit in which playback commences before the magnetic head is completely centered on the track
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Method and system for concurrent data transfer disk cache system
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Error recovery method and apparatus
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