Disk array apparatus and method for dividing and reading/writing partial data across a plurality of drive groups utilizing parallel processing
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United States of America Patent
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May 12, 1998
Grant Date -
N/A
app pub date -
May 27, 1994
filing date -
May 27, 1993
priority date (Note) -
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Abstract
A disk apparatus including a disk controller connected to a plurality of drives, each having a plurality of memory disks, and an access method to the disk apparatus, are described. Accordingly, a plurality of drives are grouped into a plurality of drive groups, and a data set is divided into a plurality of partial data having a data quantity that is accessible at a given time by each of the drive groups when an access request is generated from an external apparatus to the disk apparatus. Partial data are written into the different drive groups at different times, and successive partial data are written into different drive groups. The plurality of partial data may be transferred to the drive groups in parallel with the writing of partial data into the memory disks.
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