Electrical computers and digital processing systems: memory – Storage accessing and control – Specific memory composition
Reexamination Certificate
2006-09-05
2006-09-05
Bragdon, Reginald G. (Department: 2189)
Electrical computers and digital processing systems: memory
Storage accessing and control
Specific memory composition
C714S006130
Reexamination Certificate
active
07103716
ABSTRACT:
A RAID 6 architecture including a disk array having a prime number minus 1 disks. A method of providing multiple disk fault tolerance in an N−column×R−row logical representation of a set of data elements, wherein N represents the number of disks in the array and R is equivalent to N/2, includes assigning each strip containing data to at least two different parity groups so that each strip containing data in a respective column is assigned to parity groups different than other strips containing data in the column. The method also includes calculating, for each parity group, a parity value corresponding to all of the strips assigned to the parity group. The method further includes storing each of the parity values in strips of different columns, so that none of the strips containing data in a column are assigned to a parity group for which the parity value for the parity group is stored in the column.
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Adaptec, Inc.
Beusse Wolter Sanks Mora & Maire, P.A.
Bragdon Reginald G.
Sartor W. David
Vo Thanh D
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