Validating stored copies of data images to load into memory
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United States of America Patent
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Aug 27, 2013
Grant Date -
Aug 2, 2012
app pub date -
Apr 11, 2012
filing date -
Sep 1, 2006
priority date (Note) -
In Force
status (Latency Note)
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Abstract
Provided are a method, system, and article of manufacture for validating stored copies of data images to load into memory. An image of data is maintained in a memory, wherein the image in the memory includes a generation number. The image in the memory is written to at least two copies of the image to storage locations in response to a first event, wherein the generation number for the image in the memory is stored in the storage locations having the copies of the image. A check generation number is stored in a storage location. The image is loaded from at least one of the copies of the image in one of the storage locations to the memory in response to a second event The generation number for the image loaded into the memory. The check generation number is incremented in response to the second event. The generation numbers for the copies of the image in the storage locations and the check generation number are used to validate the copies of the image.
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