Alden R Wilner

US Patent:

6993677, Jan 31, 2006

Filed:

Jun 14, 2001

Appl. No.:

09/881584

Inventors:

Alden R. Wilner - Wichita KS, US

Assignee:

LSI Logic Corporation - Milpitas CA

International Classification:

G06F 11/00

US Classification:

714 6, 714797, 714 42

Abstract:

The present invention is directed to a system and method for data verification in a RAID system. A method of verifying data in a RAID system may include reading a first item of data from a first data storage device and a second item of data from a second data storage device. The first item of data from the first storage device is compared with the second item of data from the second storage device. If the first item of data does not match the second item of data, a third item of data is read from a third data storage device. The third item of data is compared with the first item of data and the second item of data.

US Patent:

63276720, Dec 4, 2001

Filed:

Dec 31, 1998

Appl. No.:

9/224524

Inventors:

Alden Wilner - Wichita KS

Assignee:

LSI Logic Corporation - Milpitas CA

International Classification:

G06F 1107
G06F 1108

US Classification:

714 6

Abstract:

A method and apparatus for providing data backup in a computer system. Check information can be calculated and stored on a sequential arrangement of data drives such that the loss of a single data drive does not impair the reading or writing of information on that data drive. Should more than one data drive fail or several drives fail, data can still be resurrected by chaining back through the arrangement of drives to calculate lost information. An optimum number of drives can be determined when the known number of data drives and known number of check drives and known number of check drives associated with each data drive is known. Should a data drive fail, a system for re-establishing a new data drive out of the existing check drives can be implemented.