Disk array apparatus and method for dividing and reading/writing

Details Disk array apparatus and method for dividing and reading/writing Disk array apparatus and method for dividing and reading/writing

1994-05-27

1998-05-12

Gossage, Glenn

Electrical computers and digital processing systems: memory

Storage accessing and control

Specific memory composition

711168, 395840, G06F 1300

Patent

active

057522561

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.

REFERENCES:
patent: 4989206 (1991-01-01), Dunphy, Jr. et al.
patent: 5077736 (1991-12-01), Dunphy, Jr. et al.
patent: 5124987 (1992-06-01), Milligan et al.
patent: 5457703 (1995-10-01), Kakuta et al.
"A Case For Redundant Arrays of Inexpensive Disks (RAID)", pp. 109-116 David Patterson et al., ACM SIGMOD Conference (1988 Jun.).

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