Electrical computers and digital processing systems: memory – Storage accessing and control – Hierarchical memories
Patent
1997-06-12
1998-07-07
Decady, Albert
Electrical computers and digital processing systems: memory
Storage accessing and control
Hierarchical memories
39518507, 711165, G06F 1100
Patent
active
057781672
ABSTRACT:
A system and method for reassigning a data storage location containing corrupted data to a new data storage location containing the reconstructed previously corrupted data. The system includes a persistent medium storage device such as a disk in electrical communication with a persistent medium storage device controller having a nonvolatile memory. Corrupted data, detected during a read operation, is reconstructed by the system and the reconstructed data is written to nonvolatile memory. An indicator is set in a location in nonvolatile memory indicating that the reconstructed data is being written to a reassigned location on the persistent medium storage device. The persistent medium storage device then reassigns the storage location for the reconstructed data and the reconstructed data in nonvolatile memory is written to the reassigned location. Once the reconstructed data is written to the reassigned location, the indicator in nonvolatile memory is reset.
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Carrel John
Mullahy Brian
De'cady Albert
EMC Corporation
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