Electrical computers and digital processing systems: memory – Storage accessing and control – Specific memory composition
Reexamination Certificate
2007-03-13
2007-03-13
Bragdon, Reginald (Department: 2189)
Electrical computers and digital processing systems: memory
Storage accessing and control
Specific memory composition
C711S112000, C711S150000
Reexamination Certificate
active
10809589
ABSTRACT:
A method and system are disclosed for recovering lost data with redundancy in an individual hard drive. A mirroring-type process is used in a single hard drive to maintain a backup copy of all data stored on that hard drive. The hard drive maintains two copies of the stored data on different storage media segments or partitions defined by separate read/write heads. In the event that a hard drive media defect or error occurs with respect to any of the data stored on a segment defined by one head, that data can be restored from the segment defined by the other head(s).
REFERENCES:
patent: 6028725 (2000-02-01), Blumenau
patent: 2004/0179386 (2004-09-01), Jun
Forrer, Jr. Thomas R.
Moore Jason Eric
Zuzuarregui Abel Enrique
Bragdon Reginald
Gerhardt Diana R.
Gu Shawn
International Business Machines - Corporation
Skarsten James O.
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