Method and apparatus for improving the performance of partial st

Details Method and apparatus for improving the performance of partial st Method and apparatus for improving the performance of partial st

1992-06-05

1995-04-18

Beausoliel, Jr., Robert W.

395425, G06F 1110

Patent

active

054086442

ABSTRACT:
A posting memory used in conjunction with a drive array to increase the performance of fault tolerant disk array write operations. When the posting memory flushes dirty data back to the disk array, the posting memory coalesces or gathers contiguous small write or partial stripe write requests into larger, preferably full stripe writes. This reduces the number of extra read operations necessary to update parity information. In this manner, the actual number of reads and writes to the disk array to perform the transfer of write data to the disk array is greatly reduced. In addition, when the posting memory is full, the posting memory delays small, i.e., partial stripe writes but allows full stripe writes or greater to pass directly to the disk array. This reduces the frequency of partial stripe writes and increases disk array performance.

REFERENCES:
patent: 4423479 (1983-12-01), Hanson et al.
patent: 4467421 (1984-08-01), White
patent: 4775978 (1988-10-01), Hartness
patent: 4993030 (1991-02-01), Krakauer et al.
patent: 5014237 (1991-05-01), Masters et al.
patent: 5065354 (1991-11-01), Jons et al.
patent: 5088081 (1992-02-01), Farr
patent: 5124987 (1992-06-01), Milligan et al.
patent: 5195100 (1993-03-01), Katz et al.
patent: 5206943 (1993-04-01), Callison et al.
patent: 5297258 (1994-03-01), Hale et al.
patent: 5333305 (1994-07-01), Neufeld
Preventing Overflow In A Wraparound Buffer, IBM Technical Disclosure Bulletin, vol. 32, No. 11, Apr. 1990, pp. 81-82.
Evolution Of The DASD Storage Control, C. P. Grossman, IBM System Journal, vol. 28, No. 2, 1989, pp. 196-226.
Ciprico, Inc., Rimfire 6600 Parallel Disk Array Controller Data Sheets, Sep. 8, 1989.
Patterson, D. A., Gibson, G., Katz, R. H., "A Case For Redundant Arrays Of Inexpensive Disks (RAID)," Dec. 1987, pp. 1-24.
Storage Computer Corp., "RAID Aid: A Taxonomic Extension Of The Berkeley Disk Array Schema," Submitted At Data Storage Interface And Technology Conference IX, Disk Array Workshop, Technology Forums, Ltd., Sep. 1991 pp. 1-18.
Meador, W. E., Disk Array Systems, IEEE 1989, pp. 143-146.
NG. S., Some Design Issues Of Disk Arrays, 1989 pp. 137-142.

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