Method and system for managing detected corruption in stored...

Details Method and system for managing detected corruption in stored... Method and system for managing detected corruption in stored...

2006-12-12

2006-12-12

Baderman, Scott (Department: 2114)

Error detection/correction and fault detection/recovery

Data processing system error or fault handling

Reliability and availability

C714S006130

Reexamination Certificate

active

07149935

ABSTRACT:
A method, computer program, and computer system are disclosed for managing data corruption identified by an application in a storage subsystem. Data requested of the application by a process is copied from a primary storage device in the storage subsystem to a memory. A data integrity check is performed on the data stored in the memory. If the data integrity check succeeds, the data is provided from the application to the process. If the data integrity check fails: the data requested by the process and stored on the primary storage device in the storage subsystem is identified; the data requested by the process and stored on a redundant storage device in the storage subsystem is identified; the data stored in the memory, the identified data stored on the primary storage device, and the identified data stored on the redundant storage device are compared as the first, second, and third copies, respectfully; and at least one of a group of instructions is chosen to be transmitted from the application to the storage subsystem based at least in part on the comparison of the first, second, and third copies.

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