Electrical computers and digital processing systems: memory – Storage accessing and control – Specific memory composition
Reexamination Certificate
2005-03-22
2005-03-22
Kim, Matthew (Department: 2186)
Electrical computers and digital processing systems: memory
Storage accessing and control
Specific memory composition
C714S006130
Reexamination Certificate
active
06871263
ABSTRACT:
A method and apparatus for recovering data from a failed disk drive in a disk drive array. The method and apparatus includes storing data on an array of disk drives by dividing extents of data into data segments and defining a parity group including at least one data segment from a plurality of data segments from different extents. Parity segments are generated from the data segments in the parity group and stored in the parity group. Furthermore, a second parity segment is generated from the parity segments and storied with the parity group. The method and apparatus then outputs data in realtime to users in a normal disk access mode from parity groups without the failed disk drive, and outputs recovered data in realtime to the users in a parity correction mode from the parity group containing the failed disk drive.
REFERENCES:
patent: 4761785 (1988-08-01), Clark et al.
patent: 5581778 (1996-12-01), Chin et al.
patent: 5671377 (1997-09-01), Bleidt et al.
patent: 5954822 (1999-09-01), Yashiro et al.
patent: 6158017 (2000-12-01), Han et al.
patent: 6253375 (2001-06-01), Gordon et al.
patent: 6353895 (2002-03-01), Stephenson
patent: 20020007469 (2002-01-01), Taketa et al.
patent: 20020073279 (2002-06-01), Sasamoto et al.
patent: 20020157113 (2002-10-01), Allegrezza
patent: 20020161972 (2002-10-01), Talagala et al.
U.S. Appl. No. 09/268,512, filed Mar. 12, 1999, Statistical Disk Scheduling for Video Servers.
U.S. Appl. No. 09/801,021, filed Mar. 7, 2001, Statistical Disk Scheduling for Video Servers.
Choi Woo H.
Kim Matthew
Moser Patterson & Sheridan LLP
Sedna Patent Services, LLC
LandOfFree
Method and apparatus for striping data onto a plurality of... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for striping data onto a plurality of..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for striping data onto a plurality of... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3428173