The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 07, 1998
Filed:
Jun. 12, 1997
John Carrel, West Roxbury, MA (US);
Brian Mullahy, Leominster, MA (US);
EMC Corporation, Hopkinton, MA (US);
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.