Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Hitoshi Kakuta0
Yoshifumi Takamoto0
Date of Patent
February 27, 2007
Patent Application Number
10388634
Date Filed
March 17, 2003
Patent Citations Received
Patent Primary Examiner
Patent abstract
In a disk array system of RAID (level 5) improving the system performance by distributing data, duplicated fields are allocated in a parity group in order to reduce an overhead of data write. In the data write process, write data is tentatively and duplicately written in the duplicate fields. At this time, a write completion is reported to CPU. The parity is generated later at a proper timing and written in a SCSI drive. Generating a parity and writing data can be efficiently scheduled.
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