Method and system for rapidly recovering data from a...

Details Method and system for rapidly recovering data from a... Method and system for rapidly recovering data from a...

2005-04-29

2009-08-11

Chu, Gabriel L (Department: 2114)

Error detection/correction and fault detection/recovery

Data processing system error or fault handling

Reliability and availability

C714S047300

Reexamination Certificate

active

07574623

ABSTRACT:
A method and system for recovering data from a “sick” disk are described. One embodiment of the invention relates to a RAID-based storage system that predicts the failure of a disk (e.g., a “sick” disk) in a RAID disk group. Accordingly, the storage system allocates a target disk, selected from several spare disks, to replace the “sick” disk in the RAID disk group upon completion of a disk-to-disk copy operation. Once a target disk has been allocated, a disk-to-disk copy operation is initiated to copy data from the “sick” disk to the target disk, thereby preventing the need to reconstruct data on the “sick” disk if the “sick” disk actually fails. During the disk-to-disk copy operation, client-initiated disk access operations continue to be serviced. Upon completion of the disk-to-disk copy operation, the storage system reconfigures the RAID disk group by swapping the target disk with the “sick” disk.

REFERENCES:
patent: 5611069 (1997-03-01), Matoba
patent: 5727144 (1998-03-01), Brady et al.
patent: 5737510 (1998-04-01), Kakuta et al.
patent: RE36846 (2000-08-01), Ng et al.
patent: 6154853 (2000-11-01), Kedem
patent: 6401214 (2002-06-01), Li
patent: 6571354 (2003-05-01), Parks et al.
patent: 7133966 (2006-11-01), Sato et al.
patent: 2003/0061546 (2003-03-01), Collins et al.
patent: 2004/0260967 (2004-12-01), Guha et al.
patent: 2005/0114728 (2005-05-01), Aizawa et al.
patent: 2005/0262385 (2005-11-01), McNeill et al.
patent: 2005/0283655 (2005-12-01), Ashmore
Richard R. Muntz and John C. S. Lui, “Performance Analysis Of Disk Arrays Under Failure”, Proceedings of 16thVLDB Conference, Brisbane, Australia, 1990, pp. 162-173.

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