Method and system for concurrent access during backup copying of

Details Method and system for concurrent access during backup copying of Method and system for concurrent access during backup copying of

1992-04-20

1995-01-03

Dixon, Joseph L.

Boots, shoes, and leggings

395575, 364DIG1, 364268, 3642565, G06F 1202, G06F 1216

Patent

active

053793986

ABSTRACT:
A method and system are disclosed for permitting high concurrency of access during backup copying of designated data stored within a storage subsystem which includes multiple storage devices coupled to the data processing system via a storage subsystem control unit having subsystem memory therein. Data within each storage device is accessed utilizing a Unique Control Block (UCB), which identifies a selected storage device, and an associated data retrieval command sequence which identifies the data to be accessed. Portions of the data copied to subsystem memory within the subsystem storage control unit as sidefiles from a first storage device may be accessed utilizing a Unique Control Block (UCB) associated with an alternate storage device by associating a selected data retrieval command sequence therewith which identifies the data as stored within the subsystem memory. In this manner, data from a first storage device may be accessed utilizing an alternate Unique Control Block (UCB), permitting concurrent access of data utilizing the Unique Control Block (UCB) associated with the first storage device.

REFERENCES:
patent: 3400371 (1968-09-01), Amdahl et al.
patent: 4207609 (1980-01-01), Luiz et al.
patent: 4507751 (1985-03-01), Gawlick et al.
patent: 4633387 (1986-12-01), Hartung et al.
patent: 4755928 (1988-07-01), Johnson et al.
patent: 4855907 (1989-08-01), Ferro, Jr. et al.
patent: 5175849 (1992-12-01), Schneider
patent: 5239659 (1993-08-01), Rudeseal et al.
patent: 5241668 (1993-08-01), Eastridge et al.
patent: 5241669 (1993-08-01), Cohn et al.
patent: 5241670 (1993-08-01), Eastridge et al.

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