Input/output control method and system

Details Input/output control method and system Input/output control method and system

1990-07-05

1993-10-26

Richardson, Robert L.

395425, G06F 1300

Patent

active

052573524

ABSTRACT:
An input/output control apparatus connected to a plurality of input/output units such as disc systems and an input/output control method. A cache memory is divided into a plurality of storage areas for data management. Data stored in the disc systems are stored in the storage areas. In response to an output request from a HOST system to the disc systems, data outputted from the latter are stored in the storage areas of the cache memory. The data stored in the storage areas and outputted therefrom in response to the output request are transferred to the disc systems. The storage areas storing the data requested and not yet stored in the disc systems are grouped correspondingly to the disc systems where the output data are to be stored. The resulting group is managed as a first attribute group. Write-after processing for every disc units can be executed in parallel efficiently without involving high processing overhead.

REFERENCES:
patent: 4425615 (1984-01-01), Swenson

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