Method and means for ensuring single pass small read/write acces

Details Method and means for ensuring single pass small read/write acces Method and means for ensuring single pass small read/write acces

1991-03-08

1993-10-26

Robertson, David L.

Excavating

371 511, 371 402, 364DIG1, 3642549, 3642437, 3642481, G06F 1110

Patent

active

052573621

ABSTRACT:
Write update of variable length records stored in row major order on an array of N DASDs is facilitated by utilizing the correlation between byte offsets of a variable length record and the byte offset of a byte level parity image of data stored on the same track across N-1 other DASDs.

REFERENCES:
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patent: 5077736 (1991-12-01), Dunphy, Jr. et al.
patent: 5124987 (1992-06-01), Milligan et al.
patent: 5134619 (1992-07-01), Henson et al.
patent: 5140592 (1992-08-01), Idleman et al.
patent: 5155835 (1992-10-01), Belsan
patent: 5210866 (1993-05-01), Milligan et al.
Brady et al., "Method and Means for Accessing DASD Arrays with Tuned Data Transfer Rate and Concurrency", USSN: 07/528,999, Filed May 24, 1990.
Patterson et al., "A Case of Redundant Arrays of Inexpensive Disks (Raid)", ACM Sigmod Conference, Chicago, Ill., Jun. 1-3, 1988.

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