Method and apparatus for independent and simultaneous access to

Details Method and apparatus for independent and simultaneous access to Method and apparatus for independent and simultaneous access to

1997-04-25

2000-08-08

Vonbuhr, Maria N.

Data processing: database and file management or data structures

Database design

Data structure types

707204, G06F 1730

Patent

active

061014974

ABSTRACT:
A data network with data storage facilities for providing redundant data storage and for enabling concurrent access to the data for multiple purposes. A first data processing system with a first data facility stores a data base and processes transactions or other priority applications. A second data storage facility, that may be physically separated from the first data storage facility, mirrors the data in the first data storage facility. In a concurrent access operating mode, the second data storage facility makes the data available to an application concurrently with, but independently of, the operation of the other application. On completion of the concurrent operation, the second data storage facility can reconnect with and synchronizes with the first data storage facility thereby to reestablish the mirroring operation.

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