disk apparatus with multiple raid operating modes

Details disk apparatus with multiple raid operating modes disk apparatus with multiple raid operating modes

1996-02-23

1998-11-10

Swann, Tod R.

Electrical computers and digital processing systems: memory

Storage accessing and control

Specific memory composition

711113, 711114, 711136, 711159, 711160, G06F 1208, G06F 1300

Patent

active

058359400

ABSTRACT:
A disk cache operation which was optimized so as to adapted to an operation form of the user and a disk array is executed. A cache mechanism is provided for each of two sets of controllers and can be made operative in either one of the reliability significance mode for storing the same data into each system, the performance significance mode for independently storing data every system, and the average mode of both of said modes. A cache process in which a disk array which operates in RAID0, RAID1, RAID3, or RAID5 is set to a target is efficiently executed. Effective data is prepared on a cache block so as to enable an access like RAID3 such that a parity can be calculated without needing to read the disk even in the operation of RAID5.

REFERENCES:
patent: 4593354 (1986-06-01), Ushiro
patent: 4800483 (1989-01-01), Yamamoto et al.
patent: 4819203 (1989-04-01), Shiroyanagi et al.
patent: 4870565 (1989-09-01), Yamamoto et al.
patent: 5222217 (1993-06-01), Blount et al.
patent: 5287473 (1994-02-01), Mohan et al.
patent: 5313612 (1994-05-01), Satoh et al.
patent: 5369751 (1994-11-01), Kambayashi et al.
patent: 5459856 (1995-10-01), Inoue
patent: 5475859 (1995-12-01), Kamabayashi et al.

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